Merge pull request #272 from volosoft/FormTagHelper

Form tag helper

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/AbpTagHelperService.cs

@@ -1,13 +1,24 @@
-using System.Threading.Tasks;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text.Encodings.Web;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
 using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form;
+using Volo.Abp.Threading;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers
 {
     public abstract class AbpTagHelperService<TTagHelper> : IAbpTagHelperService<TTagHelper>
         where TTagHelper : TagHelper
     {
+        protected const string FormGroupContents = "FormGroupContents";
+
         public TTagHelper TagHelper { get; set; }
-        
+
         public virtual int Order { get; }
 
         public virtual void Init(TagHelperContext context)
@@ -25,5 +36,78 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers
             Process(context, output);
             return Task.CompletedTask;
         }
+
+        protected virtual TagHelperOutput GetInnerTagHelper(TagHelperAttributeList attributeList, TagHelperContext context, TagHelper tagHelper, string tagName = "div", TagMode tagMode = TagMode.SelfClosing, bool runAsync = false)
+        {
+            var innerOutput = new TagHelperOutput(tagName, attributeList, (useCachedResult, encoder) => Task.Run<TagHelperContent>(() => new DefaultTagHelperContent()))
+            {
+                TagMode = tagMode
+            };
+
+            var innerContext = new TagHelperContext(attributeList, context.Items, Guid.NewGuid().ToString());
+
+            if (runAsync)
+            {
+                AsyncHelper.RunSync(() => tagHelper.ProcessAsync(innerContext, innerOutput));
+            }
+            else
+            {
+                tagHelper.Process(innerContext, innerOutput);
+            }
+
+            return innerOutput;
+        }
+
+        protected virtual string RenderTagHelper(TagHelperAttributeList attributeList, TagHelperContext context, TagHelper tagHelper, HtmlEncoder htmlEncoder, string tagName = "div", TagMode tagMode = TagMode.SelfClosing, bool runAsync = false)
+        {
+            var innerOutput = GetInnerTagHelper(attributeList, context, tagHelper, tagName, tagMode, runAsync);
+
+            return RenderTagHelperOutput(innerOutput, htmlEncoder);
+        }
+
+        protected virtual string RenderTagHelperOutput(TagHelperOutput output, HtmlEncoder htmlEncoder)
+        {
+            using (var writer = new StringWriter())
+            {
+                output.WriteTo(writer, htmlEncoder);
+                return writer.ToString();
+            }
+        }
+
+        protected virtual T GetAttribute<T>(ModelExplorer property) where T : Attribute
+        {
+            return property?.Metadata?.ContainerType?.GetTypeInfo()?.GetProperty(property.Metadata.PropertyName)?.GetCustomAttribute<T>();
+        }
+
+        protected virtual List<FormGroupContent> GetFormGroupContentsList(TagHelperContext context)
+        {
+            return context.Items[FormGroupContents] as List<FormGroupContent>;
+        }
+
+        protected virtual string GetIdAttributeAsString(TagHelperOutput inputTag)
+        {
+            var idAttr = inputTag.Attributes.FirstOrDefault(a => a.Name == "id");
+
+            return idAttr != null ? "for=\"" + idAttr.Value + "\"" : "";
+        }
+
+        protected virtual int GetInputOrder(ModelExplorer explorer)
+        {
+            return GetAttribute<DisplayOrder>(explorer)?.Number ?? 0;
+        }
+
+        protected virtual void AddGroupToFormGroupContents(TagHelperContext context, string propertyName, string html, int order)
+        {
+            var list = GetFormGroupContentsList(context);
+
+            if (list != null && !list.Any(igc => igc.Html.Contains("id=\"" + propertyName.Replace('.', '_') + "\"")))
+            {
+                list.Add(new FormGroupContent
+                {
+                    Html = html,
+                    Order = order
+                });
+            }
+        }
     }
 }

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpDynamicformTagHelper.cs

@@ -0,0 +1,22 @@
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class AbpDynamicFormTagHelper : AbpTagHelper<AbpDynamicFormTagHelper, AbpDynamicFormTagHelperService>
+    {
+        [HtmlAttributeName("asp-model")]
+        public ModelExpression Model { get; set; }
+        
+        [HtmlAttributeNotBound]
+        [ViewContext]
+        public ViewContext ViewContext { get; set; }
+
+        public AbpDynamicFormTagHelper(AbpDynamicFormTagHelperService tagHelperService)
+            : base(tagHelperService)
+        {
+
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpDynamicformTagHelperService.cs

@@ -0,0 +1,184 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text.Encodings.Web;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class AbpDynamicFormTagHelperService : AbpTagHelperService<AbpDynamicFormTagHelper>
+    {
+        private readonly HtmlEncoder _htmlEncoder;
+        private readonly AbpInputTagHelper _abpInputTagHelper;
+        private readonly AbpSelectTagHelper _abpSelectTagHelper;
+
+        public AbpDynamicFormTagHelperService(HtmlEncoder htmlEncoder, AbpInputTagHelper abpInputTagHelper, AbpSelectTagHelper abpSelectTagHelper)
+        {
+            _htmlEncoder = htmlEncoder;
+            _abpInputTagHelper = abpInputTagHelper;
+            _abpSelectTagHelper = abpSelectTagHelper;
+        }
+
+        public override async Task ProcessAsync(TagHelperContext context, TagHelperOutput output)
+        {
+            var list = InitilizeFormGroupContentsContext(context);
+            
+            await output.GetChildContentAsync();
+
+            ProcessFields(context, output);
+
+            SetContent(output,list);
+        }
+
+        protected virtual void SetContent(TagHelperOutput output, List<FormGroupContent> list)
+        {
+            foreach (var itemConfig in list.OrderBy(o => o.Order))
+            {
+                output.PostContent.SetHtmlContent(output.PostContent.GetContent() + itemConfig.Html);
+            }
+        }
+
+        protected virtual void SetFormAttributes(TagHelperOutput output)
+        {
+            output.TagName = "form";
+            output.Attributes.Add("method", "post");
+            output.Attributes.Add("action", "#");
+        }
+
+        protected virtual List<FormGroupContent> InitilizeFormGroupContentsContext(TagHelperContext context)
+        {
+            var list = new List<FormGroupContent>();
+            context.Items.Add(FormGroupContents, list);
+            return list;
+        }
+        
+        protected virtual void ProcessFields(TagHelperContext context, TagHelperOutput output)
+        {
+            var models = GetModels(context, output);
+
+            foreach (var model in models)
+            {
+                if (IsSelectGroup(context, model, out var selectItems))
+                {
+                    ProcessSelectGroup(context, model, selectItems);
+                    continue;
+                }
+
+                ProcessInputGroup(context, model);
+            }
+        }
+
+        protected virtual void ProcessSelectGroup(TagHelperContext context, ModelExpression model, IEnumerable<SelectListItem> selectItems)
+        {
+            _abpSelectTagHelper.AspFor = model;
+            _abpSelectTagHelper.AspItems = selectItems;
+            _abpSelectTagHelper.Label = "";
+            _abpSelectTagHelper.ViewContext = TagHelper.ViewContext;
+
+            RenderTagHelper(new TagHelperAttributeList(), context, _abpSelectTagHelper, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
+        }
+
+        protected virtual void ProcessInputGroup(TagHelperContext context, ModelExpression model)
+        {
+            _abpInputTagHelper.AspFor = model;
+            _abpInputTagHelper.Label = "";
+            _abpInputTagHelper.ViewContext = TagHelper.ViewContext;
+
+            RenderTagHelper(new TagHelperAttributeList(), context, _abpInputTagHelper, _htmlEncoder, "div", TagMode.StartTagAndEndTag);
+        }
+
+        protected virtual List<ModelExpression> GetModels(TagHelperContext context, TagHelperOutput output)
+        {
+            return TagHelper.Model.ModelExplorer.Properties.Aggregate(new List<ModelExpression>(), ExploreModelsRecursively);
+        }
+
+        protected virtual List<ModelExpression> ExploreModelsRecursively(List<ModelExpression> list, ModelExplorer model)
+        {
+            if (IsCsharpClassOrPrimitive(model.ModelType))
+            {
+                list.Add(ModelExplorerToModelExpressionConverter(model));
+
+                return list;
+            }
+
+            if (IsListOfSelectItem(model.ModelType))
+            {
+                return list;
+            }
+
+            return model.Properties.Aggregate(list, ExploreModelsRecursively);
+        }
+
+        protected virtual ModelExpression ModelExplorerToModelExpressionConverter(ModelExplorer explorer)
+        {
+            var temp = explorer;
+            var propertyName = explorer.Metadata.PropertyName;
+
+            while (temp?.Container?.Metadata?.PropertyName != null)
+            {
+                temp = temp.Container;
+                propertyName = temp.Metadata.PropertyName + "." + propertyName;
+            }
+
+            return new ModelExpression(propertyName, explorer);
+        }
+
+        protected virtual bool IsCsharpClassOrPrimitive(Type type)
+        {
+            return type.IsPrimitive ||
+                   type.IsValueType ||
+                   type == typeof(DateTime) ||
+                   type == typeof(ValueType) ||
+                   type == typeof(String) ||
+                   type == typeof(Decimal) ||
+                   type == typeof(Double) ||
+                   type == typeof(Guid) ||
+                   type == typeof(Char) ||
+                   type == typeof(Byte) ||
+                   type == typeof(Boolean) ||
+                   type == typeof(TimeSpan) ||
+                   type == typeof(DateTimeOffset) ||
+                   type == typeof(Int16) ||
+                   type == typeof(Int32) ||
+                   type == typeof(Int64) ||
+                   type == typeof(ushort) ||
+                   type == typeof(uint) ||
+                   type == typeof(ulong) ||
+                   type == typeof(float) ||
+                   type.IsEnum;
+        }
+
+        protected virtual bool IsListOfSelectItem(Type type)
+        {
+            return type == typeof(List<SelectListItem>) || type == typeof(IEnumerable<SelectListItem>);
+        }
+
+        protected virtual bool IsSelectGroup(TagHelperContext context, ModelExpression model, out IEnumerable<SelectListItem> selectItems)
+        {
+            return IsEnum(model.ModelExplorer, out selectItems) || AreSelectItemsProvided(model.ModelExplorer, out selectItems);
+        }
+
+        protected virtual bool IsEnum(ModelExplorer explorer, out IEnumerable<SelectListItem> selectItems)
+        {
+            selectItems = explorer.Metadata.IsEnum ? GetSelectItemsFromEnum(explorer.ModelType) : null;
+            return explorer.Metadata.IsEnum;
+        }
+
+        protected virtual IEnumerable<SelectListItem> GetSelectItemsFromEnum(Type enumType)
+        {
+            return enumType.GetTypeInfo().GetMembers(BindingFlags.Public | BindingFlags.Static)
+                .Select((t, i) => new SelectListItem { Value = i.ToString(), Text = t.Name }).ToList();
+        }
+
+        protected virtual bool AreSelectItemsProvided(ModelExplorer explorer, out IEnumerable<SelectListItem> selectItems)
+        {
+            selectItems = GetAttribute<SelectItems>(explorer)?.GetItems(explorer);
+            
+            return selectItems != null;
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelper.cs

@@ -0,0 +1,24 @@
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.DependencyInjection;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class AbpInputTagHelper : AbpTagHelper<AbpInputTagHelper, AbpInputTagHelperService>, ITransientDependency
+    {
+        public ModelExpression AspFor { get; set; }
+
+        public string Label { get; set; }
+
+        [HtmlAttributeNotBound]
+        [ViewContext]
+        public ViewContext ViewContext { get; set; }
+
+        public AbpInputTagHelper(AbpInputTagHelperService tagHelperService)
+            : base(tagHelperService)
+        {
+
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpInputTagHelperService.cs

@@ -0,0 +1,116 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Text.Encodings.Web;
+using Localization.Resources.AbpUi;
+using Microsoft.AspNetCore.Mvc.ModelBinding;
+using Microsoft.AspNetCore.Mvc.TagHelpers;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.Extensions.Localization;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class AbpInputTagHelperService : AbpTagHelperService<AbpInputTagHelper>
+    {
+        private readonly IHtmlGenerator _generator;
+        private readonly HtmlEncoder _encoder;
+        private readonly IStringLocalizer<AbpUiResource> _localizer;
+
+        public AbpInputTagHelperService(IHtmlGenerator generator, HtmlEncoder encoder, IStringLocalizer<AbpUiResource> localizer)
+        {
+            _generator = generator;
+            _encoder = encoder;
+            _localizer = localizer;
+        }
+
+        public override void Process(TagHelperContext context, TagHelperOutput output)
+        {
+            var html = GetFormInputGroupAsHtml(context, output);
+
+            var order = GetInputOrder(TagHelper.AspFor.ModelExplorer);
+
+            AddGroupToFormGroupContents(context, TagHelper.AspFor.Name, html, order);
+
+            output.SuppressOutput();
+        }
+
+        protected virtual string GetFormInputGroupAsHtml(TagHelperContext context, TagHelperOutput output)
+        {
+            var inputTag = GetInputTag(context, out var isCheckbox);
+            var inputHtml = RenderTagHelperOutput(inputTag, _encoder);
+            var label = GetLabelAsHtml(inputTag, isCheckbox);
+
+            var validation = isCheckbox ? "" : GetValidationAsHtml(context);
+
+            return GetContent(label, inputHtml, validation, isCheckbox);
+        }
+        protected virtual string GetValidationAsHtml(TagHelperContext context)
+        {
+            var validationMessageTagHelper = new ValidationMessageTagHelper(_generator)
+            {
+                For = TagHelper.AspFor,
+                ViewContext = TagHelper.ViewContext
+            };
+
+            var attributeList = new TagHelperAttributeList { { "class", "text-danger" } };
+
+            return RenderTagHelper(attributeList, context, validationMessageTagHelper, _encoder, "span", TagMode.StartTagAndEndTag, true);
+        }
+
+        protected virtual string GetContent(string label, string inputHtml, string validation, bool isCheckbox)
+        {
+            var innerContent = isCheckbox ?
+                inputHtml + Environment.NewLine + label :
+                label + Environment.NewLine + inputHtml;
+
+            return "<div class=\"" + (isCheckbox ? "form-check" : "form-group") + "\">" +
+                   Environment.NewLine + innerContent + Environment.NewLine +
+                   Environment.NewLine + validation + Environment.NewLine +
+                   "</div>";
+        }
+
+        protected virtual TagHelperOutput GetInputTag(TagHelperContext context, out bool isCheckbox)
+        {
+            var inputTagHelper = new InputTagHelper(_generator)
+            {
+                For = TagHelper.AspFor,
+                ViewContext = TagHelper.ViewContext
+            };
+
+            var inputTagHelperOutput = GetInnerTagHelper(new TagHelperAttributeList(), context, inputTagHelper, "input");
+            isCheckbox = IsInputCheckbox(inputTagHelperOutput.Attributes);
+
+            inputTagHelperOutput.Attributes.Add("class", isCheckbox ? "form-check-input" : "form-control");
+
+            return inputTagHelperOutput;
+        }
+
+        protected virtual bool IsInputCheckbox(TagHelperAttributeList attributes)
+        {
+            return attributes.Any(a => a.Value != null && a.Name == "type" && a.Value.ToString() == "checkbox");
+        }
+
+        protected virtual string GetLabelAsHtml(TagHelperOutput inputTag, bool isCheckbox)
+        {
+            if (string.IsNullOrEmpty(TagHelper.Label) && string.IsNullOrEmpty(TagHelper.AspFor.Metadata.DisplayName))
+            {
+                return "";
+            }
+
+            var checkboxClass = isCheckbox ? "class=\"form-check-label\" " : "";
+
+            return "<label " + checkboxClass + GetIdAttributeAsString(inputTag) + ">"
+                   + _localizer[GetLabelValue()] +
+                   "</label>";
+        }
+
+        protected virtual string GetLabelValue()
+        {
+            return string.IsNullOrEmpty(TagHelper.Label) ?
+                TagHelper.AspFor.Metadata.DisplayName :
+                TagHelper.Label;
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpSelectTagHelper.cs

@@ -0,0 +1,27 @@
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.DependencyInjection;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class AbpSelectTagHelper : AbpTagHelper<AbpSelectTagHelper, AbpSelectTagHelperService>, ITransientDependency
+    {
+        public ModelExpression AspFor { get; set; }
+
+        public string Label { get; set; }
+
+        public IEnumerable<SelectListItem> AspItems { get; set; }
+
+        [HtmlAttributeNotBound]
+        [ViewContext]
+        public ViewContext ViewContext { get; set; }
+
+        public AbpSelectTagHelper(AbpSelectTagHelperService tagHelperService)
+            : base(tagHelperService)
+        {
+
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpSelectTagHelperService.cs

@@ -0,0 +1,86 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Encodings.Web;
+using Localization.Resources.AbpUi;
+using Microsoft.AspNetCore.Mvc.TagHelpers;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.Extensions.Localization;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class AbpSelectTagHelperService : AbpTagHelperService<AbpSelectTagHelper>
+    {
+        private readonly IHtmlGenerator _generator;
+        private readonly HtmlEncoder _encoder;
+        private readonly IStringLocalizer<AbpUiResource> _localizer;
+
+        public AbpSelectTagHelperService(IHtmlGenerator generator, HtmlEncoder encoder, IStringLocalizer<AbpUiResource> localizer)
+        {
+            _generator = generator;
+            _encoder = encoder;
+            _localizer = localizer;
+        }
+
+        public override void Process(TagHelperContext context, TagHelperOutput output)
+        {
+            var html = GetFormInputGroupAsHtml(context, output);
+            
+            var order = GetInputOrder(TagHelper.AspFor.ModelExplorer);
+
+            AddGroupToFormGroupContents(context, TagHelper.AspFor.Name, html, order);
+
+            output.SuppressOutput();
+        }
+        
+        protected virtual string GetFormInputGroupAsHtml(TagHelperContext context, TagHelperOutput output)
+        {
+            var selectTag = GetSelectTag(context);
+            var selectAsHtml = RenderTagHelperOutput(selectTag, _encoder);
+            var label = GetLabelAsHtml(selectTag);
+
+            return GetContent(label, selectAsHtml);
+        }
+
+        protected virtual string GetContent(string label, string inputHtml)
+        {
+            var innerContent = label + Environment.NewLine + inputHtml;
+
+            return "<div class=\"form-group\">" + Environment.NewLine + innerContent + Environment.NewLine + "</div>";
+        }
+
+        protected virtual TagHelperOutput GetSelectTag(TagHelperContext context)
+        {
+            var selectTagHelper = new SelectTagHelper(_generator)
+            {
+                For = TagHelper.AspFor,
+                Items = TagHelper.AspItems,
+                ViewContext = TagHelper.ViewContext
+            };
+            
+            var inputTagHelperOutput = GetInnerTagHelper(new TagHelperAttributeList(), context,selectTagHelper, "select", TagMode.StartTagAndEndTag); ;
+
+            inputTagHelperOutput.Attributes.Add("class", "form-control");
+
+            return inputTagHelperOutput;
+        }
+        
+        protected virtual string GetLabelAsHtml(TagHelperOutput selectTag)
+        {
+            if (string.IsNullOrEmpty(TagHelper.Label) && string.IsNullOrEmpty(TagHelper.AspFor.Metadata.DisplayName))
+            {
+                return "";
+            }
+
+            return "<label " + GetIdAttributeAsString(selectTag) + ">" + _localizer[GetLabelText()] + "</label>";
+        }
+
+        protected virtual string GetLabelText()
+        {
+            return string.IsNullOrEmpty(TagHelper.Label) ?
+                TagHelper.AspFor.Metadata.DisplayName :
+                TagHelper.Label;
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpValidationAttributeTagHelper.cs

@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Volo.Abp.DependencyInjection;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    [HtmlTargetElement(Attributes = "asp-validation-for")]
+    public class AbpValidationAttributeTagHelper : AbpTagHelper<AbpValidationAttributeTagHelper, AbpValidationAttributeTagHelperService>, ITransientDependency
+    {
+        public AbpValidationAttributeTagHelper(AbpValidationAttributeTagHelperService tagHelperService)
+            : base(tagHelperService)
+        {
+
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/AbpValidationAttributeTagHelperService.cs

@@ -0,0 +1,20 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text.Encodings.Web;
+using Localization.Resources.AbpUi;
+using Microsoft.AspNetCore.Mvc.TagHelpers;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.Extensions.Localization;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class AbpValidationAttributeTagHelperService : AbpTagHelperService<AbpValidationAttributeTagHelper>
+    {
+        public override void Process(TagHelperContext context, TagHelperOutput output)
+        {
+            output.Attributes.Add("class","text-danger");
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/DisplayOrder.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    [AttributeUsage(AttributeTargets.Property)]
+    public class DisplayOrder : Attribute
+    {
+        public int Number { get; set; }
+
+        public DisplayOrder(int number)
+        {
+            Number = number;
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/FormGroupContent.cs

@@ -0,0 +1,9 @@
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public class FormGroupContent
+    {
+        public string Html { get; set; }
+
+        public int Order { get; set; }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/SelectItems.cs

@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    [AttributeUsage(AttributeTargets.Property)]
+    public class SelectItems: Attribute
+    {
+        public string ItemsListPropertyName { get; set; }
+
+        public SelectType SelectType { get; set; } = SelectType.Dropdown;
+
+        public IEnumerable<SelectListItem> GetItems(ModelExplorer explorer)
+        {
+            var properties = explorer.Container.Properties.Where(p => p.Metadata.PropertyName.Equals(ItemsListPropertyName)).ToList();
+
+            return properties.Count > 0
+                ? properties.First().Model as IEnumerable<SelectListItem>
+                : null;
+        }
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Form/SelectType.cs

@@ -0,0 +1,8 @@
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form
+{
+    public enum SelectType
+    {
+        Dropdown,
+        Radio
+    }
+}

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Grid/AbpColBreakTagHelper.cs

@@ -1,6 +1,4 @@
-using Microsoft.AspNetCore.Razor.TagHelpers;
-
-namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Grid
+namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Grid
 {
     public class AbpColBreakTagHelper : AbpTagHelper<AbpColBreakTagHelper, AbpColBreakTagHelperService>
     {

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Grid/AbpColBreakTagHelperService.cs

@@ -1,6 +1,4 @@
-using System;
-using System.Text;
-using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Grid

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Grid/AbpColumnTagHelperService.cs

@@ -1,6 +1,4 @@
-using System;
-using System.Text;
-using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Grid

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Grid/AbpContainerTagHelperService.cs

@@ -1,5 +1,4 @@
-using System.Text;
-using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Grid

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Grid/AbpRowTagHelperService.cs

@@ -1,6 +1,4 @@
-using System.ComponentModel;
-using System.Text;
-using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.AspNetCore.Razor.TagHelpers;
 using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Microsoft.AspNetCore.Razor.TagHelpers;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Grid

src/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap/TagHelpers/Label/AbpLabelTagHelperService.cs

@@ -1,5 +1,4 @@
-using System.Text;
-using Microsoft.AspNetCore.Razor.TagHelpers;
+using Microsoft.AspNetCore.Razor.TagHelpers;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Label
 {

test/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo/Pages/Components/Forms.cshtml

@@ -1,23 +1,128 @@
 @page
-@model Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo.Pages.Components.FormsModel
+@using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo.Pages.Components
+@model FormsModel
+
 @{
-    ViewData["Title"] = "Forms";
+     ViewData["Title"] = "Forms";
 }
 
 <h2>Forms</h2>
 
 <p>Based on <a href="http://getbootstrap.com/docs/4.1/components/forms/" target="_blank"> Bootstrap form</a>.</p>
 
-<h4># Example</h4>
+<h4># Dynamic Form Example</h4>
 
 <div class="demo-with-code">
     <div class="demo-area">
+        <abp-dynamic-form asp-model="@Model.Ahmet">
 
+        </abp-dynamic-form>
     </div>
     <div class="code-area">
-        <pre>
-
+        <pre>       
+        &lt;abp-dynamic-form asp-model=&quot;Model.Ahmet&quot; &gt;
+        &lt;/abp-dynamic-form&gt;
         </pre>
     </div>
 </div>
 
+
+@*<h4># Input Group Example</h4>
+
+    <div class="demo-with-code">
+        <div class="demo-area">
+            <form method="post" action="#">
+                <abp-input asp-for="@Model.Name" />
+                <abp-input asp-for="@Model.Password" label="Password" />
+                <abp-input asp-for="@Model.IsActive" />
+                <abp-input asp-for="@Model.PhoneNumber" />
+                <abp-input asp-for="@Model.EmailAddress" />
+                <abp-input asp-for="@Model.Count" />
+                <abp-input asp-for="@Model.Day" />
+                <abp-select asp-for="@Model.Country" asp-items="@Model.Countries" label="Country"></abp-select>
+                <abp-select asp-for="@Model.City" asp-items="@Html.GetEnumSelectList(typeof(Cities))"></abp-select>
+            </form>
+        </div>
+        <div class="code-area">
+            <pre>
+            &lt;form method=&quot;post&quot; action=&quot;#&quot;&gt;
+                &lt;abp-input asp-for=&quot;Model.Name&quot;/&gt;
+                &lt;abp-input asp-for=&quot;Model.Password&quot; label=&quot;Password&quot;/&gt;
+                &lt;abp-input asp-for=&quot;Model.IsActive&quot; /&gt;
+                &lt;abp-input asp-for=&quot;Model.PhoneNumber&quot; /&gt;
+                &lt;abp-input asp-for=&quot;Model.EmailAddress&quot; /&gt;
+                &lt;abp-input asp-for=&quot;Model.Count&quot; /&gt;
+                &lt;abp-input asp-for=&quot;Model.Day&quot; /&gt;
+                &lt;abp-select asp-for=&quot;Model.Country&quot; asp-items=&quot;Model.Countries&quot; label=&quot;Country&quot;&gt;&lt;/abp-select&gt;
+                &lt;abp-select asp-for=&quot;Model.City&quot; asp-items=&quot;Html.GetEnumSelectList(typeof(Cities))&quot;&gt;&lt;/abp-select&gt;
+            &lt;/form&gt;
+            </pre>
+        </div>
+    </div>*@
+
+@*<div class="demo-with-code">
+        <div class="demo-area">
+            <form method="post" action="#">
+                <abp-form-group>
+                    <abp-select asp-for="@Model.Country" asp-items="@Model.Countries"></abp-select>
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-select asp-for="@Model.City" asp-items="@Html.GetEnumSelectList(typeof(Cities))"></abp-select>
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-input asp-for="@Model.Name" />
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-input asp-for="@Model.Password" />
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-input asp-for="@Model.PhoneNumber" />
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-input asp-for="@Model.EmailAddress" />
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-input asp-for="@Model.Count" />
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-input asp-for="@Model.Day" />
+                </abp-form-group>
+                <abp-form-group>
+                    <abp-input asp-for="@Model.IsActive" />
+                </abp-form-group>
+            </form>
+        </div>
+        <div class="code-area">
+            <pre>
+            &lt;form method=&quot;post&quot; action=&quot;#&quot;&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-select asp-for=&quot;@Model.Country&quot; asp-items=&quot;@Model.Countries&quot;&gt;&lt;/abp-select&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-select asp-for=&quot;@Model.City&quot; asp-items=&quot;@Html.GetEnumSelectList(typeof(Cities))&quot;&gt;&lt;/abp-select&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-input asp-for=&quot;@Model.Name&quot; /&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-input asp-for=&quot;@Model.Password&quot; /&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-input asp-for=&quot;@Model.PhoneNumber&quot; /&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-input asp-for=&quot;@Model.EmailAddress&quot; /&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-input asp-for=&quot;@Model.Count&quot; /&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-input asp-for=&quot;@Model.Day&quot; /&gt;
+                &lt;/abp-form-group&gt;
+                &lt;abp-form-group&gt;
+                    &lt;abp-input asp-for=&quot;@Model.IsActive&quot; /&gt;
+                &lt;/abp-form-group&gt;
+            &lt;/form&gt;
+            </pre>
+        </div>
+    </div>*@

test/Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo/Pages/Components/Forms.cshtml.cs

@@ -1,12 +1,83 @@
-using Microsoft.AspNetCore.Mvc.RazorPages;
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Mvc.RazorPages;
+using Microsoft.AspNetCore.Mvc.Rendering;
+using Microsoft.AspNetCore.Mvc.ViewFeatures;
+using Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers.Form;
 
 namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.Demo.Pages.Components
 {
     public class FormsModel : PageModel
     {
+        public PersonViewModel Ahmet { get; set; } = new PersonViewModel();
+
         public void OnGet()
         {
-
+            Ahmet = new PersonViewModel
+            {
+                Name = "ahmet",
+                Age = 65,
+                Phone = new Phone {Number = "326346231",Name = "MyPhone"}
+            };
         }
     }
+
+    public enum Cities
+    {
+        Istanbul,
+        NewJersey,
+        Moscow
+    }
+
+    public class PersonViewModel
+    {
+        [Required]
+        [DisplayName("Name")]
+        public string Name { get; set; } = "MyName";
+
+        [Required]
+        [DisplayOrder(61)]
+        [DisplayName("Age")]
+        [Range(1, 100)]
+        public int Age { get; set; }
+
+        [Required]
+        [DisplayName("City")]
+        public Cities City { get; set; }
+
+        public Phone Phone { get; set; }
+
+        [DataType(DataType.Date)]
+        [DisplayName("Day")]
+        public DateTime Day { get; set; }
+
+        [DisplayOrder(51)]
+        [DisplayName("Is Active")]
+        public bool IsActive { get; set; }
+
+        [DisplayName("Country")]
+        [SelectItems(ItemsListPropertyName = nameof(Countries))]
+        public string Country { get; set; }
+
+        public  List<SelectListItem> Countries { get; set; } =  new List<SelectListItem>
+        {
+            new SelectListItem { Value = "MX", Text = "Mexico" },
+            new SelectListItem { Value = "CA", Text = "Canada" },
+            new SelectListItem { Value = "US", Text = "USA"  },
+        };
+    }
+
+    public class Phone
+    {
+        [Required]
+        [DisplayName("Number")]
+        public string Number { get; set; }
+
+        [Required]
+        [DisplayOrder(71)]
+        [DisplayName("PhoneName")]
+        public string Name { get; set; }
+    }
 }