mirror of https://github.com/abpframework/abp.git
mehmet-erim
5 years ago
1 changed files with 1 additions and 192 deletions
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# Config State |
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`ConfigStateService` is a singleton service, i.e. provided in root level of your application, and is actually a façade for interacting with application configuration state in the `Store`. |
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## Before Use |
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In order to use the `ConfigStateService` you must inject it in your class as a dependency. |
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```js |
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import { ConfigStateService } from '@abp/ng.core'; |
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@Component({ |
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/* class metadata here */ |
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}) |
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class DemoComponent { |
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constructor(private config: ConfigStateService) {} |
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} |
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``` |
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You do not have to provide the `ConfigStateService` at module or component/directive level, because it is already **provided in root**. |
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## Selector Methods |
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`ConfigStateService` has numerous selector methods which allow you to get a specific configuration or all configurations from the `Store`. |
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### How to Get All Configurations From the Store |
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You can use the `getAll` method of `ConfigStateService` to get all of the configuration object from the store. It is used as follows: |
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```js |
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// this.config is instance of ConfigStateService |
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const config = this.config.getAll(); |
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``` |
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### How to Get a Specific Configuration From the Store |
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You can use the `getOne` method of `ConfigStateService` to get a specific configuration property from the store. For that, the property name should be passed to the method as parameter. |
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```js |
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// this.config is instance of ConfigStateService |
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const currentUser = this.config.getOne("currentUser"); |
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``` |
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On occasion, you will probably want to be more specific than getting just the current user. For example, here is how you can get the `tenantId`: |
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```js |
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const tenantId = this.config.getDeep("currentUser.tenantId"); |
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``` |
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or by giving an array of keys as parameter: |
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```js |
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const tenantId = this.config.getDeep(["currentUser", "tenantId"]); |
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``` |
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FYI, `getDeep` is able to do everything `getOne` does. Just keep in mind that `getOne` is slightly faster. |
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#### Config State Properties |
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Please refer to `Config.State` type for all the properties you can get with `getOne` and `getDeep`. It can be found in the [config.ts file](https://github.com/abpframework/abp/blob/dev/npm/ng-packs/packages/core/src/lib/models/config.ts#L7). |
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### How to Get the Application Information From the Store |
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The `getApplicationInfo` method is used to get the application information from the environment variables stored as the config state. This is how you can use it: |
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```js |
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// this.config is instance of ConfigStateService |
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const appInfo = this.config.getApplicationInfo(); |
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``` |
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This method never returns `undefined` or `null` and returns an empty object literal (`{}`) instead. In other words, you will never get an error when referring to the properties of `appInfo` above. |
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#### Application Information Properties |
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Please refer to `Config.Application` type for all the properties you can get with `getApplicationInfo`. It can be found in the [config.ts file](https://github.com/abpframework/abp/blob/dev/npm/ng-packs/packages/core/src/lib/models/config.ts#L21). |
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### How to Get API URL From the Store |
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The `getApplicationInfo` method is used to get a specific API URL from the environment variables stored as the config state. This is how you can use it: |
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```js |
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// this.config is instance of ConfigStateService |
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const apiUrl = this.config.getApiUrl(); |
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// environment.apis.default.url |
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const searchUrl = this.config.getApiUrl("search"); |
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// environment.apis.search.url |
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``` |
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This method returns the `url` of a specific API based on the key given as its only parameter. If there is no key, `'default'` is used. |
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### How to Get a Specific Permission From the Store |
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You can use the `getGrantedPolicy` method of `ConfigStateService` to get a specific permission from the configuration state. For that, you should pass a policy key as parameter to the method. |
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```js |
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// this.config is instance of ConfigStateService |
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const hasIdentityPermission = this.config.getGrantedPolicy("Abp.Identity"); |
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// true |
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``` |
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You may also **combine policy keys** to fine tune your selection: |
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```js |
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// this.config is instance of ConfigStateService |
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const hasIdentityAndAccountPermission = this.config.getGrantedPolicy( |
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"Abp.Identity && Abp.Account" |
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); |
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// false |
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const hasIdentityOrAccountPermission = this.config.getGrantedPolicy( |
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"Abp.Identity || Abp.Account" |
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); |
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// true |
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``` |
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Please consider the following **rules** when creating your permission selectors: |
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- Maximum 2 keys can be combined. |
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- `&&` operator looks for both keys. |
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- `||` operator looks for either key. |
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- Empty string `''` as key will return `true` |
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- Using an operator without a second key will return `false` |
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### How to Get Translations From the Store |
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The `getLocalization` method of `ConfigStateService` is used for translations. Here are some examples: |
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```js |
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// this.config is instance of ConfigStateService |
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const identity = this.config.getLocalization("AbpIdentity::Identity"); |
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// 'identity' |
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const notFound = this.config.getLocalization("AbpIdentity::IDENTITY"); |
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// 'AbpIdentity::IDENTITY' |
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const defaultValue = this.config.getLocalization({ |
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key: "AbpIdentity::IDENTITY", |
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defaultValue: "IDENTITY" |
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}); |
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// 'IDENTITY' |
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``` |
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Please check out the [localization documentation](./Localization.md) for details. |
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## Dispatch Methods |
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`ConfigStateService` has several dispatch methods which allow you to conveniently dispatch predefined actions to the `Store`. |
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### How to Get Application Configuration From Server |
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The `dispatchGetAppConfiguration` triggers a request to an endpoint that responds with the application state and then places this response to the `Store` as configuration state. |
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```js |
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// this.config is instance of ConfigStateService |
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this.config.dispatchGetAppConfiguration(); |
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// returns a state stream which emits after dispatch action is complete |
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``` |
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Note that **you do not have to call this method at application initiation**, because the application configuration is already being received from the server at start. |
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### How to Set the Environment |
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The `dispatchSetEnvironment` places environment variables passed to it in the `Store` under the configuration state. Here is how it is used: |
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```js |
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// this.config is instance of ConfigStateService |
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this.config.dispatchSetEnvironment({ |
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/* environment properties here */ |
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}); |
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// returns a state stream which emits after dispatch action is complete |
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``` |
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Note that **you do not have to call this method at application initiation**, because the environment variables are already being stored at start. |
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#### Environment Properties |
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Please refer to `Config.Environment` type for all the properties you can pass to `dispatchSetEnvironment` as parameter. It can be found in the [config.ts file](https://github.com/abpframework/abp/blob/dev/npm/ng-packs/packages/core/src/lib/models/config.ts#L13). |
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## See Also |
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- [Settings](./Settings.md) |
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- [Features](./Features.md) |
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**ConfigState has been deprecated.** Use the [ConfigStateService](./Config-State-Service) instead. |
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