Select Item Attribute improvements

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

@@ -71,20 +71,7 @@ namespace Volo.Abp.AspNetCore.Mvc.UI.Bootstrap.TagHelpers
         
         public static T GetAttribute<T>(ModelExplorer property) where T : Attribute
         {
-            //var xd1 = property.Container.ModelType.GetTypeInfo();
-            //var xd2 = xd1.GetProperty(property.Metadata.PropertyName);
-
-            var xd1 = property.Metadata.ContainerType.GetTypeInfo();
-            var xd2 = xd1.GetProperty(property.Metadata.PropertyName);
-
-            if (xd2 == null)
-            {
-                return null;
-            }
-
-            var attribute = xd2 .GetCustomAttribute<T>();
-
-            return attribute;
+            return property?.Metadata?.ContainerType?.GetTypeInfo()?.GetProperty(property.Metadata.PropertyName)?.GetCustomAttribute<T>();
         }
     }
 }

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

@@ -1,19 +1,53 @@
 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 IEnumerable<SelectListItem> Items { get; set; }
+        public string ItemsListPropertyName { get; set; }
 
-        public SelectItems(IEnumerable<SelectListItem> items)
+        public Type EnumType { get; set; }
+
+        public SelectType SelectType { get; set; } = SelectType.Dropdown;
+
+        public IEnumerable<SelectListItem> GetItems(ModelExplorer explorer)
+        {
+            if (IsEnumItem())
+            {
+                return GetItemsFromEnum();
+            }
+            else
+            {
+                return GetItemsFromListField(explorer);
+            }
+        }
+
+        private IEnumerable<SelectListItem> GetItemsFromListField(ModelExplorer explorer)
+        {
+            var properties = explorer.Properties.Where(p => p.Metadata.PropertyName.Equals(ItemsListPropertyName)).ToList();
+
+            return properties.Count > 0
+                ? properties.First().Model as IEnumerable<SelectListItem>
+                : new List<SelectListItem>();
+        }
+
+        private IEnumerable<SelectListItem> GetItemsFromEnum()
+        {
+            var enumItems = EnumType.GetTypeInfo().GetMembers(BindingFlags.Public | BindingFlags.Static);
+
+            return enumItems.Select((t, i) => new SelectListItem() { Value = i.ToString(), Text = t.Name }).ToList();
+        }
+
+        private bool IsEnumItem()
         {
-            Items = items;
+            return EnumType != null && EnumType.GetTypeInfo().IsEnum;
         }
     }
 }

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
+    }
+}