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maliming
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# Developing a Multi-Timezone Application Using the ABP Framework |
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When developing multi-timezone applications, we need to handle users from different time zones and make sure they see the correct time. The system also needs to support users changing their timezone (like when traveling or moving) and make sure all time displays update correctly to show accurate time information. |
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All these scenarios require us to handle timezone conversions correctly in our application. The ABP framework provides a complete solution for these challenges. |
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In this article, we'll show you step by step how to handle multi-timezone in the ABP framework. |
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## Timezone Settings |
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The ABP framework provides a setting called `Abp.Timing.TimeZone` for setting and getting the timezone of users, tenants, or applications. The default value is empty, which means the application will use the server's time zone. Check out the [Timing documentation](https://abp.io/docs/latest/framework/infrastructure/timing) for more information. |
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|
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## ISO 8601 Date Time Format |
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Different countries and regions may use different time formats: |
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* Year-Month-Day (YYYY-MM-DD): Mainly used in China, Japan, Korea, Canada (official standard), Germany (ISO standard), ISO 8601 international standard, etc. Example: 2025-03-11 |
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* Day-Month-Year (DD-MM-YYYY): Mainly used in UK, India, Australia, New Zealand, most European countries (like France, Germany, Italy, Spain), some South American countries, etc. Example: 11-03-2025 or 11/03/2025 |
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* Month-Day-Year (MM-DD-YYYY): Mainly used in USA, Philippines, some parts of Canada, etc. Example: 03-11-2025 or 03/11/2025 |
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* Day.Month.Year (DD.MM.YYYY): Mainly used in Germany, Russia, Switzerland, Hungary, Czech Republic, etc. Example: 11.03.2025 |
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Also, different countries/regions might use different separators (like slash /, hyphen -, dot .), and some countries use different month abbreviations or full names (like March 11, 2025). |
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ISO 8601 uses a standard format to avoid confusion between different date formats and ensure global compatibility. |
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It has 4 parts: |
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* Date part: `YYYY-MM-DD` |
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* `T` as a separator |
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* Time part: `HH:MM:SS` |
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* Timezone part: `Z` or `+/-HH:MM` |
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You'll usually see formats like: `YYYY-MM-DDTHH:MM:SSZ` or `YYYY-MM-DDTHH:MM:SS+/-HH:MM`, for example: `2025-03-11T10:30:00Z` or `2025-03-11T22:30:00+03:00` |
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When our application needs to handle multiple timezones, we usually use ISO 8601 to represent time. |
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## Enabling Multi-Timezone Support |
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When we set the `Kind` of `AbpClockOptions` to `DateTimeKind.Utc`, the ABP framework will normalize all times. Times written to the database and returned to the frontend will be in `UTC`. the `SupportsMultipleTimezone` property will be `true` in the `IClock` service. |
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```csharp |
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Configure<AbpClockOptions>(options => |
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{ |
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options.Kind = DateTimeKind.Utc; |
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}); |
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``` |
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|
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### Using DateTime to Store Time |
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Assuming the `DateTime` stored in the database is `2025-03-01 10:30:00`, then the time returned to the front end will be `2025-03-01T10:30:00Z`. This is a time in ISO 8601 format. Because `DateTime` does not have timezone information, the framework will assume it is `UTC` time. |
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|
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### Using DateTimeOffset to Store Time |
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If you use `DateTimeOffset` to store time, the ABP framework will not normalize `DateTimeOffset`, but will return it directly to the front end. |
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Assuming the `DateTimeOffset` stored in the database is `2025-03-01 13:30:00 +03:00`, then the time returned to the front end will be `2025-03-01T13:30:00+03:00`. This is also a time in ISO 8601 format. |
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We recommend using `DateTimeOffset` to store time because it has timezone information. |
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|
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## Timezone Conversion |
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### Converting UTC Time to User Time |
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The `IClock` service has 2 methods to convert a given `UTC` time to the user time: |
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```csharp |
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DateTime ConvertToUserTime(utcDateTime dateTime) |
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DateTimeOffset ConvertToUserTime(DateTimeOffset dateTimeOffset) |
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``` |
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> If `SupportsMultipleTimezone` is `false` or `dateTime.Kind` is not `Utc` or no timezone is set, it will return the given `DateTime` or `DateTimeOffset` without any changes. |
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**Example:** |
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If the user's timezone is `Europe/Istanbul` |
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```csharp |
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// 2025-03-01T05:30:00Z |
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var utcTime = new DateTime(2025, 3, 1, 5, 30, 0, DateTimeKind.Utc); |
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var userTime = Clock.ConvertToUserTime(utcTime); |
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// Europe/Istanbul has 3 hours difference with UTC. So, the result will be 3 hours later. |
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userTime.Kind.ShouldBe(DateTimeKind.Unspecified); |
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userTime.ToString("O").ShouldBe("2025-03-01T08:30:00"); |
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``` |
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```csharp |
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// 2025-03-01T05:30:00Z |
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var utcTime = new DateTimeOffset(new DateTime(2025, 3, 1, 5, 30, 0, DateTimeKind.Utc), TimeSpan.Zero); |
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var userTime = Clock.ConvertToUserTime(utcTime); |
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// Europe/Istanbul has 3 hours difference with UTC. So, the result will be 3 hours later. |
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userTime.Offset.ShouldBe(TimeSpan.FromHours(3)); |
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userTime.ToString("O").ShouldBe("2025-03-01T08:30:00.0000000+03:00"); |
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``` |
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|
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### Converting User Time to UTC |
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The `IClock` service has 1 method to convert a given user time to UTC. |
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```csharp |
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DateTime ConvertToUtc(DateTime dateTime) |
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``` |
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> If `SupportsMultipleTimezone` is `false` or `dateTime.Kind` is `Utc` or no timezone is set, it will return the given `DateTime` without any changes. |
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**Example:** |
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If the user's timezone is `Europe/Istanbul` |
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```csharp |
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// 2025-03-01T05:30:00 |
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var userTime = new DateTime(2025, 3, 1, 5, 30, 0, DateTimeKind.Unspecified); //Same as Local |
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var utcTime = Clock.ConvertToUtc(userTime); |
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// Europe/Istanbul has 3 hours difference with UTC. So, the result will be 3 hours earlier. |
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utcTime.Kind.ShouldBe(DateTimeKind.Utc); |
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utcTime.ToString("O").ShouldBe("2025-03-01T02:30:00.0000000Z"); |
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``` |
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## Handling Timezone in Different UIs |
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We'll use the `TimeZoneApp` project to demonstrate handling timezone in different UIs. It has a `Meeting` entity, with several time properties. |
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```csharp |
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public class Meeting : AggregateRoot<Guid> |
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{ |
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public string Subject { get; set; } |
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public DateTime StartTime { get; set; } |
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public DateTime EndTime { get; set; } |
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public DateTime ActualStartTime { get; set; } |
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public DateTime? CanceledTime { get; set; } |
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public DateTimeOffset ReminderTime { get; set; } |
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public DateTimeOffset? FollowUpTime { get; set; } |
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public string Description { get; set; } |
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} |
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``` |
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`TimeZoneApp` project is an ABP layered architecture project, it sets a global `Europe/Istanbul` timezone, it contains 4 websites |
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* `API.Host`: API website, it does not have UI, it returns data in JSON format |
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* `AuthServer`: Authentication server, it uses Razor Pages as UI |
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* `Web`: Razor Pages website, it uses JavaScript to manage Meeting creation and editing and display |
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* `Blazor`: Blazor Server website, it uses Blazor to manage Meeting creation and editing and display |
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All 4 applications are enabled for multi-timezone support, and use the `UseAbpTimeZone` middleware. |
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> Blazor WASM and Angular do not need to use the `UseAbpTimeZone` middleware |
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### DateTime in API Response |
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In the API response, we usually use the ISO 8601 format time, as you can see, after enabling multi-timezone support, the API returns time to the front end as UTC time. |
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`2025-03-01T09:30:00Z` and `2025-03-01T12:30:00+00:00` are ISO 8601 format time. |
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```json |
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[ |
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{ |
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"subject": "ABP Developer Guide", |
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"startTime": "2025-03-01T09:30:00Z", |
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"endTime": "2025-03-01T10:30:00Z", |
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"actualStartTime": "2025-03-01T11:30:00Z", |
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"canceledTime": null, |
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"reminderTime": "2025-03-01T12:30:00+00:00", |
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"followUpTime": "2025-03-01T13:30:00+00:00", |
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"description": "We will discuss the ABP developer guide.", |
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"id": "2af0abd3-be06-ecff-5d4c-3a1895ac7950" |
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}, |
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{ |
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"subject": "ABP Training", |
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"startTime": "2025-03-01T09:30:00Z", |
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"endTime": "2025-03-01T10:30:00Z", |
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"actualStartTime": "2025-03-01T11:30:00Z", |
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"canceledTime": "2025-03-01T12:00:00Z", |
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"reminderTime": "2025-03-01T12:30:00+00:00", |
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"followUpTime": "2025-03-01T13:30:00+00:00", |
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"description": "ABP training for the new developers.", |
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"id": "290b0cb6-3e50-6324-1e79-3a1895ac795f" |
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} |
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] |
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``` |
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|
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### Handling Timezone in MVC/Razor Pages |
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In the `AuthServer` project, we handle time conversion in a simple way: |
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1. First, we get the `Meeting` entities from the database using `IRepository<Meeting, Guid>`. At this point, all `DateTime` values are in UTC. |
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2. Then, when displaying the times in the view, we use `Clock.ConvertToUserTime` to show them in the user's timezone. |
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> Note: The `ConvertToUserTime` method will only convert times if multi-timezone support is enabled in the application. |
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```csharp |
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public class IndexModel : AbpPageModel |
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{ |
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public List<Meeting>? Meetings { get; set; } |
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protected IRepository<Meeting, Guid> MeetingRepository { get; } |
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public IndexModel(IRepository<Meeting, Guid> meetingRepository) |
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{ |
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MeetingRepository = meetingRepository; |
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} |
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public async Task OnGetAsync() |
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{ |
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Meetings = await MeetingRepository.GetListAsync(); |
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} |
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} |
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``` |
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```html |
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<div class="container"> |
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<abp-row> |
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<div class="table-responsive"> |
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<table class="table table-striped table-hover mt-3"> |
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<thead> |
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<tr> |
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<th>@L["Subject"]</th> |
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<th>@L["StartTime"] / @L["EndTime"]</th> |
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<th>@L["ActualStartTime"]</th> |
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<th>@L["CanceledTime"]</th> |
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<th>@L["ReminderTime"]</th> |
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<th>@L["FollowUpTime"]</th> |
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<th>@L["Description"]</th> |
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</tr> |
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</thead> |
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<tbody> |
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@foreach (var meeting in Model.Meetings) |
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{ |
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<tr> |
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<td>@meeting.Subject</td> |
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<td>@Clock.ConvertToUserTime(meeting.StartTime) ➡️ @Clock.ConvertToUserTime(meeting.EndTime)</td> |
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<td>@Clock.ConvertToUserTime(meeting.ActualStartTime)</td> |
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<td>@(meeting.CanceledTime.HasValue ? Clock.ConvertToUserTime(meeting.CanceledTime.Value) : "N/A")</td> |
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<td>@Clock.ConvertToUserTime(meeting.ReminderTime).DateTime</td> |
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<td>@(meeting.FollowUpTime.HasValue ? Clock.ConvertToUserTime(meeting.FollowUpTime.Value).DateTime : "N/A")</td> |
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<td>@meeting.Description</td> |
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</tr> |
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} |
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</tbody> |
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</table> |
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</div> |
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</abp-row> |
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</div> |
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``` |
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### Handling Timezone in JavaScript |
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In the `Web` project, we use JavaScript to handle timezone. |
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#### Displaying Time in UI |
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* `timeZoneApp.meetings.meeting.getList` gets all `Meeting` entities and displays them in `DataTables` |
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* `abp.clock.normalizeToLocaleString()` is the ABP JavaScript API, it converts `UTC` time to the current user's timezone, and then calls its `toLocaleString` method to format time |
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* `dataFormat: "datetime"` is the ABP DataTable extension method, it calls the `abp.clock.normalizeToLocaleString` method to convert and format time |
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> If the current application is not enabled for multi-timezone support, then the `abp.clock.normalizeToLocaleString` method will not convert the time, it will just call the `Date` object's `toLocaleString` method. |
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```js |
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var dataTable = $('#MeetingsTable').DataTable( |
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abp.libs.datatables.normalizeConfiguration({ |
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serverSide: true, |
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paging: true, |
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order: [[1, "asc"]], |
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searching: false, |
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scrollX: true, |
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ajax: abp.libs.datatables.createAjax(timeZoneApp.meetings.meeting.getList), |
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columnDefs: [ |
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{ |
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title: l('Actions'), |
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rowAction: { |
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items: |
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[ |
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{ |
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text: l('Edit'), |
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visible: abp.auth.isGranted('TimeZoneApp.Meetings.Edit'), |
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action: function (data) { |
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editModal.open({ id: data.record.id }); |
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}, |
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}, |
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{ |
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text: l('Delete'), |
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visible: abp.auth.isGranted('TimeZoneApp.Meetings.Delete'), |
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confirmMessage: function (data) { |
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return l('MeetingDeletionConfirmationMessage', data.record.subject); |
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}, |
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action: function (data) { |
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timeZoneApp.meetings.meeting |
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.delete(data.record.id) |
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.then(function() { |
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abp.notify.info(l('SuccessfullyDeleted')); |
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dataTable.ajax.reload(); |
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}); |
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} |
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} |
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] |
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} |
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}, |
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{ |
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title: l('Subject'), |
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data: "subject" |
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}, |
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{ |
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title: l('StartTime') + ' / ' + l('StartTime'), |
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data: "startTime", |
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render: function (data, type, row) { |
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return abp.clock.normalizeToLocaleString(row.startTime) + ' ➡️ ' + abp.clock.normalizeToLocaleString(row.endTime); |
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} |
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}, |
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{ |
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title: l('ActualStartTime'), |
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data: "actualStartTime", |
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dataFormat: "datetime" |
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}, |
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{ |
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title: l('CanceledTime'), |
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data: "canceledTime", |
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render: function (data, type, row) { |
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return data ? abp.clock.normalizeToLocaleString(data) : 'N/A'; |
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} |
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}, |
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{ |
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title: l('ReminderTime'), |
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data: "reminderTime", |
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dataFormat: "datetime" |
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}, |
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{ |
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title: l('FollowUpTime'), |
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data: "followUpTime", |
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render: function (data, type, row) { |
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return data ? abp.clock.normalizeToLocaleString(data) : 'N/A'; |
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} |
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}, |
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{ |
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title: l('Description'), |
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data: "description" |
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} |
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] |
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}) |
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); |
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``` |
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Below is the screenshot of `DataTables`: |
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 |
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|
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|
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#### Creating and Editing Meeting |
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We use `JavaScript` to create and edit `Meeting`. |
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ABP's [TagHelper](https://abp.io/docs/latest/framework/ui/mvc-razor-pages/tag-helpers) can automatically create forms based on the model, it will generate corresponding HTML tags based on the attributes in the model. For `DateTime` and `DateTimeOffset` attributes, it will generate and initialize a [DateTimePicker](https://www.daterangepicker.com/) component. |
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|
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**CreateModal** and **EditModal** : |
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|
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```html |
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<abp-dynamic-form abp-model="Meeting" asp-page="/Meetings/CreateModal"> |
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<abp-modal> |
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<abp-modal-header title="@L["NewMeeting"].Value"></abp-modal-header> |
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<abp-modal-body> |
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<abp-form-content /> |
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</abp-modal-body> |
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<abp-modal-footer buttons="@(AbpModalButtons.Cancel|AbpModalButtons.Save)"></abp-modal-footer> |
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</abp-modal> |
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</abp-dynamic-form> |
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``` |
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|
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```html |
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<abp-dynamic-form abp-model="Meeting" asp-page="/Meetings/EditModal"> |
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<abp-modal> |
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<abp-modal-header title="@L["Update"].Value"></abp-modal-header> |
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<abp-modal-body> |
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<abp-input asp-for="Id" /> |
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<abp-form-content /> |
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</abp-modal-body> |
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<abp-modal-footer buttons="@(AbpModalButtons.Cancel|AbpModalButtons.Save)"></abp-modal-footer> |
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</abp-modal> |
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</abp-dynamic-form> |
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``` |
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|
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You can see that the time in the control has been converted to the current user's timezone. |
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|
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 |
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|
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 |
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|
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When we submit the form, we need to convert the time to `UTC`. In the `JavaScript` of the `Create` and `Edit` pages, we use the `handleDatepicker` this `jQuery` extension method to handle time in the form, it internally gets the user's local time from the selector `input[type="hidden"][data-hidden-datepicker]`, and then uses the `abp.clock.normalizeToString` method to convert the date field in the form to the `ISO 8601` format `UTC` time string. |
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|
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> If the current application is not enabled for multi-timezone support, then the `abp.clock.normalizeToString` method will not convert the time, it will just convert to the ISO 8601 format time string without timezone. |
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|
|||
```js |
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var abp = abp || {}; |
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$(function () { |
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abp.modals.meetingCreate = function () { |
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var initModal = function (publicApi, args) { |
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var $form = publicApi.getForm(); |
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$form.find('button[type="submit"]').on('click', function (e) { |
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$form.handleDatepicker('input[type="hidden"][data-hidden-datepicker]'); |
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}); |
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}; |
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|
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return { |
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initModal: initModal |
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} |
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}; |
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}); |
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``` |
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|
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The requested data is as follows: |
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|
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```csharp |
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Request URL: Meetings/EditModal |
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Request Method: POST |
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Payload: |
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Id: 0803780b-3762-2af8-1c75-3a1895d59c89 |
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Meeting.Subject: ABP Developer Guide |
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Meeting.StartTime: 2025-03-01T09:30:00.000Z |
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Meeting.EndTime: 2025-03-01T10:30:00.000Z |
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Meeting.ActualStartTime: 2025-03-01T11:30:00.000Z |
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Meeting.CanceledTime: |
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Meeting.ReminderTime: 2025-03-01T12:30:00.000Z |
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Meeting.FollowUpTime: 2025-03-01T13:30:00.000Z |
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Meeting.Description: We will discuss the ABP developer guide. |
|||
``` |
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|
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 |
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|
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In short, we use the `abp.clock.normalizeToLocaleString` method to display time, and use the `abp.clock.normalizeToString` method to modify the time to be submitted. If you submit data via `ajax`, please remember to use the `abp.clock.normalizeToString` method to convert time. |
|||
|
|||
### Handling Timezone in Blazor |
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|
|||
We cannot automatically complete some work in `Blazor UI`, we need to inject `IClock` and use the `ConvertToUserTime` and `ConvertToUtc` methods to display and create/update entities. |
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|
|||
Below is a complete `Meeting` page, please refer to the usage of `Clock` in it. |
|||
|
|||
```csharp |
|||
@page "/meetings" |
|||
@using Volo.Abp.Application.Dtos |
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@using Microsoft.Extensions.Localization |
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@using TimeZoneApp.Meetings |
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@using TimeZoneApp.Localization |
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@using TimeZoneApp.Permissions |
|||
@using Volo.Abp.AspNetCore.Components.Web |
|||
@inject IStringLocalizer<TimeZoneAppResource> L |
|||
@inject AbpBlazorMessageLocalizerHelper<TimeZoneAppResource> LH |
|||
@inherits AbpCrudPageBase<IMeetingAppService, MeetingDto, Guid, PagedAndSortedResultRequestDto, CreateUpdateMeetingDto> |
|||
|
|||
<Card> |
|||
<CardHeader> |
|||
<Row Class="justify-content-between"> |
|||
<Column ColumnSize="ColumnSize.IsAuto"> |
|||
<h2>@L["Meetings"]</h2> |
|||
</Column> |
|||
<Column ColumnSize="ColumnSize.IsAuto"> |
|||
@if (HasCreatePermission) |
|||
{ |
|||
<Button Color="Color.Primary" Clicked="OpenCreateModalAsync">@L["NewMeeting"]</Button> |
|||
} |
|||
</Column> |
|||
</Row> |
|||
</CardHeader> |
|||
<CardBody> |
|||
<DataGrid TItem="MeetingDto" |
|||
Data="Entities" |
|||
ReadData="OnDataGridReadAsync" |
|||
TotalItems="TotalCount" |
|||
ShowPager="true" |
|||
PageSize="PageSize"> |
|||
<DataGridColumns> |
|||
<DataGridEntityActionsColumn TItem="MeetingDto" @ref="@EntityActionsColumn"> |
|||
<DisplayTemplate> |
|||
<EntityActions TItem="MeetingDto" EntityActionsColumn="@EntityActionsColumn"> |
|||
<EntityAction TItem="MeetingDto" |
|||
Text="@L["Edit"]" |
|||
Visible=HasUpdatePermission |
|||
Clicked="() => OpenEditModalAsync(context)" /> |
|||
<EntityAction TItem="MeetingDto" |
|||
Text="@L["Delete"]" |
|||
Clicked="() => DeleteEntityAsync(context)" |
|||
Visible=HasDeletePermission |
|||
ConfirmationMessage="()=>GetDeleteConfirmationMessage(context)" /> |
|||
</EntityActions> |
|||
</DisplayTemplate> |
|||
</DataGridEntityActionsColumn> |
|||
<DataGridColumn TItem="MeetingDto" |
|||
Field="@nameof(MeetingDto.Subject)" |
|||
Caption="@L["Subject"]"></DataGridColumn> |
|||
<DataGridColumn TItem="MeetingDto" |
|||
Field="@nameof(MeetingDto.StartTime)" |
|||
Caption="@(L["StartTime"] + "/" + L["EndTime"])"> |
|||
<DisplayTemplate> |
|||
@Clock.ConvertToUserTime(context.StartTime).ToString("yyyy-MM-dd HH:mm:ss") ➡️ @Clock.ConvertToUserTime(context.EndTime).ToString("yyyy-MM-dd HH:mm:ss") |
|||
</DisplayTemplate> |
|||
</DataGridColumn> |
|||
<DataGridColumn TItem="MeetingDto" |
|||
Field="@nameof(MeetingDto.ActualStartTime)" |
|||
Caption="@L["ActualStartTime"]"> |
|||
<DisplayTemplate> |
|||
@Clock.ConvertToUserTime(context.ActualStartTime).ToString("yyyy-MM-dd HH:mm:ss") |
|||
</DisplayTemplate> |
|||
</DataGridColumn> |
|||
<DataGridColumn TItem="MeetingDto" |
|||
Field="@nameof(MeetingDto.CanceledTime)" |
|||
Caption="@L["CanceledTime"]"> |
|||
<DisplayTemplate> |
|||
@(context.CanceledTime.HasValue ? Clock.ConvertToUserTime(context.CanceledTime.Value).ToString("yyyy-MM-dd HH:mm:ss") : "N/A") |
|||
</DisplayTemplate> |
|||
</DataGridColumn> |
|||
<DataGridColumn TItem="MeetingDto" |
|||
Field="@nameof(MeetingDto.ReminderTime)" |
|||
Caption="@L["ReminderTime"]"> |
|||
<DisplayTemplate> |
|||
@(Clock.ConvertToUserTime(context.ReminderTime).ToString("yyyy-MM-dd HH:mm:ss") ) |
|||
</DisplayTemplate> |
|||
</DataGridColumn> |
|||
<DataGridColumn TItem="MeetingDto" |
|||
Field="@nameof(MeetingDto.FollowUpTime)" |
|||
Caption="@L["FollowUpTime"]"> |
|||
<DisplayTemplate> |
|||
@(context.FollowUpTime.HasValue ? Clock.ConvertToUserTime(context.FollowUpTime.Value).ToString("yyyy-MM-dd HH:mm:ss") : "N/A") |
|||
</DisplayTemplate> |
|||
</DataGridColumn> |
|||
<DataGridColumn TItem="MeetingDto" |
|||
Field="@nameof(MeetingDto.Description)" |
|||
Caption="@L["Description"]"> |
|||
</DataGridColumn> |
|||
</DataGridColumns> |
|||
</DataGrid> |
|||
</CardBody> |
|||
</Card> |
|||
|
|||
<Modal @ref="@CreateModal"> |
|||
<ModalContent IsCentered="true"> |
|||
<Form> |
|||
<ModalHeader> |
|||
<ModalTitle>@L["NewMeeting"]</ModalTitle> |
|||
<CloseButton Clicked="CloseCreateModalAsync"/> |
|||
</ModalHeader> |
|||
<ModalBody> |
|||
<Validations @ref="@CreateValidationsRef" Model="@NewEntity" ValidateOnLoad="false"> |
|||
<Validation MessageLocalizer="@LH.Localize"> |
|||
<Field> |
|||
<FieldLabel>@L["Subject"]</FieldLabel> |
|||
<TextEdit @bind-Text="@NewEntity.Subject"> |
|||
<Feedback> |
|||
<ValidationError/> |
|||
</Feedback> |
|||
</TextEdit> |
|||
</Field> |
|||
</Validation> |
|||
<Field> |
|||
<FieldLabel>@L["StartTime"] / @L["EndTime"]</FieldLabel> |
|||
<DatePicker TValue="DateTime?" @bind-Dates="SelectedDates" InputMode="DateInputMode.DateTime" SelectionMode="DateInputSelectionMode.Range" /> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["ActualStartTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTime" @bind-Date="NewEntity.ActualStartTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["CanceledTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTime?" @bind-Date="NewEntity.CanceledTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["ReminderTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTimeOffset" @bind-Date="NewEntity.ReminderTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["FollowUpTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTimeOffset?" @bind-Date="NewEntity.FollowUpTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Validation MessageLocalizer="@LH.Localize"> |
|||
<Field> |
|||
<FieldLabel>@L["Description"]</FieldLabel> |
|||
<TextEdit @bind-Text="@NewEntity.Description"> |
|||
<Feedback> |
|||
<ValidationError/> |
|||
</Feedback> |
|||
</TextEdit> |
|||
</Field> |
|||
</Validation> |
|||
</Validations> |
|||
</ModalBody> |
|||
<ModalFooter> |
|||
<Button Color="Color.Secondary" |
|||
Clicked="CloseCreateModalAsync">@L["Cancel"]</Button> |
|||
<Button Color="Color.Primary" |
|||
Type="@ButtonType.Submit" |
|||
PreventDefaultOnSubmit="true" |
|||
Clicked="CreateEntityAsync">@L["Save"]</Button> |
|||
</ModalFooter> |
|||
</Form> |
|||
</ModalContent> |
|||
</Modal> |
|||
|
|||
<Modal @ref="@EditModal"> |
|||
<ModalContent IsCentered="true"> |
|||
<Form> |
|||
<ModalHeader> |
|||
<ModalTitle>@EditingEntity.Subject</ModalTitle> |
|||
<CloseButton Clicked="CloseEditModalAsync"/> |
|||
</ModalHeader> |
|||
<ModalBody> |
|||
<Validations @ref="@EditValidationsRef" Model="@EditingEntity" ValidateOnLoad="false"> |
|||
<Validation MessageLocalizer="@LH.Localize"> |
|||
<Field> |
|||
<FieldLabel>@L["Subject"]</FieldLabel> |
|||
<TextEdit @bind-Text="@EditingEntity.Subject"> |
|||
<Feedback> |
|||
<ValidationError/> |
|||
</Feedback> |
|||
</TextEdit> |
|||
</Field> |
|||
</Validation> |
|||
<Field> |
|||
<FieldLabel>@L["StartTime"] / @L["EndTime"]</FieldLabel> |
|||
<DatePicker TValue="DateTime?" @bind-Dates="SelectedDates" InputMode="DateInputMode.DateTime" SelectionMode="DateInputSelectionMode.Range" /> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["ActualStartTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTime" @bind-Date="EditingEntity.ActualStartTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["CanceledTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTime?" @bind-Date="EditingEntity.CanceledTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["ReminderTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTimeOffset" @bind-Date="EditingEntity.ReminderTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Field> |
|||
<FieldLabel>@L["FollowUpTime"]</FieldLabel> |
|||
<DateEdit TValue="DateTimeOffset?" @bind-Date="EditingEntity.FollowUpTime" InputMode="DateInputMode.DateTime"/> |
|||
</Field> |
|||
<Validation MessageLocalizer="@LH.Localize"> |
|||
<Field> |
|||
<FieldLabel>@L["Description"]</FieldLabel> |
|||
<TextEdit @bind-Text="@EditingEntity.Description"> |
|||
<Feedback> |
|||
<ValidationError/> |
|||
</Feedback> |
|||
</TextEdit> |
|||
</Field> |
|||
</Validation> |
|||
</Validations> |
|||
</ModalBody> |
|||
<ModalFooter> |
|||
<Button Color="Color.Secondary" |
|||
Clicked="CloseEditModalAsync">@L["Cancel"]</Button> |
|||
<Button Color="Color.Primary" |
|||
Type="@ButtonType.Submit" |
|||
PreventDefaultOnSubmit="true" |
|||
Clicked="UpdateEntityAsync">@L["Save"]</Button> |
|||
</ModalFooter> |
|||
</Form> |
|||
</ModalContent> |
|||
</Modal> |
|||
|
|||
|
|||
@code { |
|||
IReadOnlyList<DateTime?> SelectedDates; |
|||
|
|||
public Meeting() |
|||
{ |
|||
CreatePolicyName = TimeZoneAppPermissions.Meetings.Create; |
|||
UpdatePolicyName = TimeZoneAppPermissions.Meetings.Edit; |
|||
DeletePolicyName = TimeZoneAppPermissions.Meetings.Delete; |
|||
} |
|||
|
|||
protected override async Task OpenCreateModalAsync() |
|||
{ |
|||
await base.OpenCreateModalAsync(); |
|||
|
|||
var now = DateTime.Now; |
|||
SelectedDates = new List<DateTime?> { now.Date.AddHours(10),now.Date.AddDays(7).AddHours(10) }; |
|||
NewEntity.ActualStartTime = now.Date.AddHours(11); |
|||
NewEntity.CanceledTime = now.Date.AddHours(12); |
|||
NewEntity.ReminderTime = now.Date.AddHours(13); |
|||
NewEntity.FollowUpTime = now.Date.AddHours(14); |
|||
} |
|||
|
|||
protected override Task OnCreatingEntityAsync() |
|||
{ |
|||
if (SelectedDates.Count == 2 && SelectedDates[0].HasValue && SelectedDates[1].HasValue) |
|||
{ |
|||
NewEntity.StartTime = Clock.ConvertToUtc(SelectedDates[0]!.Value); |
|||
NewEntity.EndTime = Clock.ConvertToUtc(SelectedDates[1]!.Value); |
|||
} |
|||
|
|||
NewEntity.ActualStartTime = Clock.ConvertToUtc(NewEntity.ActualStartTime); |
|||
NewEntity.CanceledTime = NewEntity.CanceledTime.HasValue ? Clock.ConvertToUtc(NewEntity.CanceledTime.Value) : null; |
|||
|
|||
NewEntity.ReminderTime = Clock.ConvertToUtc(NewEntity.ReminderTime.DateTime); |
|||
NewEntity.FollowUpTime = NewEntity.FollowUpTime.HasValue ? Clock.ConvertToUtc(NewEntity.FollowUpTime.Value.DateTime) : null; |
|||
|
|||
return Task.CompletedTask; |
|||
} |
|||
|
|||
protected override async Task OpenEditModalAsync(MeetingDto entity) |
|||
{ |
|||
await base.OpenEditModalAsync(entity); |
|||
|
|||
SelectedDates = new List<DateTime?> { Clock.ConvertToUserTime(EditingEntity.StartTime), Clock.ConvertToUserTime(EditingEntity.EndTime) }; |
|||
EditingEntity.ActualStartTime = Clock.ConvertToUserTime(EditingEntity.ActualStartTime); |
|||
EditingEntity.CanceledTime = EditingEntity.CanceledTime.HasValue ? Clock.ConvertToUserTime(EditingEntity.CanceledTime.Value) : null; |
|||
EditingEntity.ReminderTime = Clock.ConvertToUserTime(EditingEntity.ReminderTime); |
|||
EditingEntity.FollowUpTime = EditingEntity.FollowUpTime.HasValue ? Clock.ConvertToUserTime(EditingEntity.FollowUpTime.Value) : null; |
|||
} |
|||
|
|||
protected override Task OnUpdatingEntityAsync() |
|||
{ |
|||
if (SelectedDates.Count == 2 && SelectedDates[0].HasValue && SelectedDates[1].HasValue) |
|||
{ |
|||
EditingEntity.StartTime = Clock.ConvertToUtc(SelectedDates[0]!.Value); |
|||
EditingEntity.EndTime = Clock.ConvertToUtc(SelectedDates[1]!.Value); |
|||
} |
|||
|
|||
EditingEntity.ActualStartTime = Clock.ConvertToUtc(EditingEntity.ActualStartTime); |
|||
EditingEntity.CanceledTime = EditingEntity.CanceledTime.HasValue ? Clock.ConvertToUtc(EditingEntity.CanceledTime.Value) : null; |
|||
|
|||
return Task.CompletedTask; |
|||
} |
|||
} |
|||
``` |
|||
|
|||
 |
|||
|
|||
 |
|||
|
|||
 |
|||
|
|||
## Timezone Settings Change |
|||
|
|||
If the timezone settings change, then all times will be converted to the new timezone. For example, if the current timezone changes from `Europe/Istanbul` to `Europe/Berlin`, then all times will be converted to the `Europe/Berlin` timezone. |
|||
|
|||
 |
|||
|
|||
`Europe/Istanbul`: |
|||
|
|||
 |
|||
|
|||
 |
|||
|
|||
`Europe/Berlin`: |
|||
|
|||
 |
|||
|
|||
 |
|||
|
|||
## Browser Timezone Detection |
|||
|
|||
When no timezone setting is configured, ABP's MVC, Blazor, and Angular applications will automatically detect the browser's timezone during initialization. The detected timezone is then stored in either the request's Cookie or Header. |
|||
|
|||
This functionality is implemented by the `UseAbpTimeZone` middleware, which follows a specific order to determine the appropriate timezone: |
|||
|
|||
1. First, it attempts to retrieve the timezone from the application/tenant/user settings |
|||
2. If no setting is found, it tries to get the timezone from the request information, including Cookie, Header, QueryString, and Form |
|||
3. Finally, if no timezone information is found, it falls back to using the server's timezone as the default |
|||
|
|||
> The timezone information is stored using the key `__timezone` |
|||
|
|||
## TimeZoneApp Source Code |
|||
|
|||
You can download and view the [TimeZoneApp source code](https://github.com/maliming/TimeZone) for detailed implementation. |
|||
|
|||
## Summary |
|||
|
|||
Through this article, we learned how to handle timezone in different types of UIs. I hope this article is helpful to you. If you have any questions, please contact me at any time. |
|||
|
After Width: | Height: | Size: 66 KiB |
|
Before Width: | Height: | Size: 37 KiB After Width: | Height: | Size: 61 KiB |
|
After Width: | Height: | Size: 26 KiB |
|
After Width: | Height: | Size: 30 KiB |
@ -0,0 +1,10 @@ |
|||
using Volo.Abp.DependencyInjection; |
|||
using Volo.Abp.Timing; |
|||
|
|||
namespace Volo.Abp.AspNetCore.Components.MauiBlazor; |
|||
|
|||
[Dependency(ReplaceServices = true)] |
|||
public class MauiBlazorCurrentTimezoneProvider : ICurrentTimezoneProvider, ISingletonDependency |
|||
{ |
|||
public string? TimeZone { get; set; } |
|||
} |
|||
@ -0,0 +1,8 @@ |
|||
namespace Volo.Abp.AspNetCore.Components.WebAssembly.WebApp; |
|||
|
|||
/// <summary>
|
|||
/// This class is used to indicate that the AddBlazorWebAppTieredServices method has been called for compatibility with the old template code
|
|||
/// </summary>
|
|||
internal sealed class AddBlazorWebAppTieredServicesHasBeenCalled |
|||
{ |
|||
} |
|||
@ -0,0 +1,10 @@ |
|||
using Volo.Abp.DependencyInjection; |
|||
using Volo.Abp.Timing; |
|||
|
|||
namespace Volo.Abp.AspNetCore.Components.WebAssembly; |
|||
|
|||
[Dependency(ReplaceServices = true)] |
|||
public class WebAssemblyCurrentTimezoneProvider : ICurrentTimezoneProvider, ISingletonDependency |
|||
{ |
|||
public string? TimeZone { get; set; } |
|||
} |
|||
@ -1 +1 @@ |
|||
.dataTable{width:100% !important;border-spacing:0 !important;}.table td,.table th{padding:8px 10px;}.dataTable tbody tr td button{cursor:pointer;}.dataTable tbody tr td div.dropdown ul.dropdown-menu li{cursor:pointer;} |
|||
.dataTable{width:100%!important;border-spacing:0!important}.table td,.table th{padding:8px 10px}.dataTable tbody tr td button{cursor:pointer}.dataTable tbody tr td div.dropdown ul.dropdown-menu li{cursor:pointer}.abp-action-button ui.dropdown-menu[data-popper-reference-hidden]{visibility:hidden;pointer-events:none} |
|||
@ -0,0 +1,82 @@ |
|||
using System; |
|||
using System.Linq; |
|||
using System.Threading.Tasks; |
|||
using Microsoft.AspNetCore.Http; |
|||
using Microsoft.Extensions.DependencyInjection; |
|||
using Volo.Abp.AspNetCore.Middleware; |
|||
using Volo.Abp.DependencyInjection; |
|||
using Volo.Abp.Settings; |
|||
using Volo.Abp.Timing; |
|||
using Volo.Abp.Users; |
|||
|
|||
namespace Microsoft.AspNetCore.Timing; |
|||
|
|||
public class AbpTimeZoneMiddleware : AbpMiddlewareBase, ITransientDependency |
|||
{ |
|||
public async override Task InvokeAsync(HttpContext context, RequestDelegate next) |
|||
{ |
|||
if (!context.RequestServices.GetRequiredService<IClock>().SupportsMultipleTimezone) |
|||
{ |
|||
await next(context); |
|||
return; |
|||
} |
|||
|
|||
// Try to get the timezone from the setting system first
|
|||
var settingProvider = context.RequestServices.GetRequiredService<ISettingProvider>(); |
|||
var timezone = await settingProvider.GetOrNullAsync(TimingSettingNames.TimeZone); |
|||
|
|||
if (timezone.IsNullOrWhiteSpace()) |
|||
{ |
|||
// Try to get the timezone from the HTTP request if the setting is not available
|
|||
timezone = await GetTimezoneFromRequestAsync(context); |
|||
} |
|||
|
|||
if (timezone.IsNullOrWhiteSpace()) |
|||
{ |
|||
// Try to get the timezone from the current running server if the setting and request are not available
|
|||
timezone = await GetLocalTimeZoneAsync(); |
|||
} |
|||
|
|||
var currentTimezoneProvider = context.RequestServices.GetRequiredService<ICurrentTimezoneProvider>(); |
|||
using (currentTimezoneProvider.Change(timezone)) |
|||
{ |
|||
await next(context); |
|||
} |
|||
} |
|||
|
|||
protected virtual async Task<string? > GetTimezoneFromRequestAsync(HttpContext context) |
|||
{ |
|||
var timeZoneSources = new Func<HttpContext, Task<string?>>[] |
|||
{ |
|||
ctx => Task.FromResult(ctx.Request.Headers[TimeZoneConsts.DefaultTimeZoneKey].FirstOrDefault()), |
|||
ctx => Task.FromResult<string?>(ctx.Request.Query[TimeZoneConsts.DefaultTimeZoneKey].ToString()), |
|||
async ctx => ctx.Request.HasFormContentType |
|||
? (await ctx.Request.ReadFormAsync())[TimeZoneConsts.DefaultTimeZoneKey].ToString() |
|||
: null, |
|||
ctx => Task.FromResult(ctx.Request.Cookies[TimeZoneConsts.DefaultTimeZoneKey]?.ToString()), |
|||
}; |
|||
|
|||
foreach (var source in timeZoneSources) |
|||
{ |
|||
var timezone = await source(context); |
|||
if (!string.IsNullOrEmpty(timezone)) |
|||
{ |
|||
return timezone; |
|||
} |
|||
} |
|||
|
|||
return null; |
|||
} |
|||
|
|||
protected virtual Task<string?> GetLocalTimeZoneAsync() |
|||
{ |
|||
if (TimeZoneInfo.Local.HasIanaId) |
|||
{ |
|||
return Task.FromResult<string?>(TimeZoneInfo.Local.Id); |
|||
} |
|||
|
|||
return TimeZoneInfo.TryConvertWindowsIdToIanaId(TimeZoneInfo.Local.Id, out var ianaName) |
|||
? Task.FromResult<string?>(ianaName) |
|||
: Task.FromResult<string?>(null); |
|||
} |
|||
} |
|||
@ -0,0 +1,13 @@ |
|||
using System; |
|||
using MongoDB.Bson; |
|||
|
|||
namespace Volo.Abp.MongoDB; |
|||
|
|||
public class AbpGuidCustomBsonTypeMapper : ICustomBsonTypeMapper |
|||
{ |
|||
public bool TryMapToBsonValue(object value, out BsonValue bsonValue) |
|||
{ |
|||
bsonValue = new BsonBinaryData((Guid)value, GuidRepresentation.Standard); |
|||
return true; |
|||
} |
|||
} |
|||
@ -0,0 +1,39 @@ |
|||
<!doctype html> |
|||
<html lang="en-US"> |
|||
<head> |
|||
<title>Swagger UI: OAuth2 Redirect</title> |
|||
</head> |
|||
<body> |
|||
<script> |
|||
'use strict'; |
|||
function run () { |
|||
var qp, arr; |
|||
|
|||
if (/code|token|error/.test(window.location.hash)) { |
|||
qp = window.location.hash.substring(1).replace('?', '&'); |
|||
} else { |
|||
qp = location.search.substring(1); |
|||
} |
|||
|
|||
arr = qp.split("&"); |
|||
arr.forEach(function (v,i,_arr) { _arr[i] = '"' + v.replace('=', '":"') + '"';}); |
|||
qp = qp ? JSON.parse('{' + arr.join() + '}', |
|||
function (key, value) { |
|||
return key === "" ? value : decodeURIComponent(value); |
|||
} |
|||
) : {}; |
|||
|
|||
localStorage.setItem("abp_swagger_oauth2", JSON.stringify(qp)); |
|||
window.close(); |
|||
} |
|||
|
|||
if (document.readyState !== 'loading') { |
|||
run(); |
|||
} else { |
|||
document.addEventListener('DOMContentLoaded', function () { |
|||
run(); |
|||
}); |
|||
} |
|||
</script> |
|||
</body> |
|||
</html> |
|||
@ -0,0 +1,20 @@ |
|||
using System.Threading; |
|||
using Volo.Abp.DependencyInjection; |
|||
|
|||
namespace Volo.Abp.Timing; |
|||
|
|||
public class CurrentTimezoneProvider : ICurrentTimezoneProvider, ISingletonDependency |
|||
{ |
|||
public string? TimeZone |
|||
{ |
|||
get => _currentScope.Value; |
|||
set => _currentScope.Value = value; |
|||
} |
|||
|
|||
private readonly AsyncLocal<string?> _currentScope; |
|||
|
|||
public CurrentTimezoneProvider() |
|||
{ |
|||
_currentScope = new AsyncLocal<string?>(); |
|||
} |
|||
} |
|||
@ -0,0 +1,18 @@ |
|||
using System; |
|||
|
|||
namespace Volo.Abp.Timing; |
|||
|
|||
public static class CurrentTimezoneProviderExtensions |
|||
{ |
|||
public static IDisposable Change(this ICurrentTimezoneProvider currentTimezoneProvider, string? timeZone) |
|||
{ |
|||
var parentScope = currentTimezoneProvider.TimeZone; |
|||
currentTimezoneProvider.TimeZone = timeZone; |
|||
|
|||
return new DisposeAction<ValueTuple<ICurrentTimezoneProvider, string?>>(static (state) => |
|||
{ |
|||
var (currentTimezoneProvider, parentScope) = state; |
|||
currentTimezoneProvider.TimeZone = parentScope; |
|||
}, (currentTimezoneProvider, parentScope)); |
|||
} |
|||
} |
|||
@ -0,0 +1,6 @@ |
|||
namespace Volo.Abp.Timing; |
|||
|
|||
public interface ICurrentTimezoneProvider |
|||
{ |
|||
string? TimeZone { get; set; } |
|||
} |
|||
@ -0,0 +1,6 @@ |
|||
namespace Volo.Abp.Timing; |
|||
|
|||
public class TimeZoneConsts |
|||
{ |
|||
public const string DefaultTimeZoneKey = "__timezone"; |
|||
} |
|||
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