Added tokenizable default value to ContentPickerFields (#8351)

src/Orchard.Web/Modules/Orchard.ContentPicker/Drivers/ContentPickerFieldDriver.cs

@@ -7,13 +7,20 @@ using Orchard.ContentManagement.Handlers;
 using Orchard.ContentPicker.ViewModels;
 using Orchard.Localization;
 using Orchard.Utility.Extensions;
+using Orchard.ContentPicker.Fields;
+using Orchard.Tokens;
+using System.Collections.Generic;
 
 namespace Orchard.ContentPicker.Drivers {
     public class ContentPickerFieldDriver : ContentFieldDriver<Fields.ContentPickerField> {
         private readonly IContentManager _contentManager;
+        private readonly ITokenizer _tokenizer;
 
-        public ContentPickerFieldDriver(IContentManager contentManager) {
+        public ContentPickerFieldDriver(
+            IContentManager contentManager,
+            ITokenizer tokenizer) {
             _contentManager = contentManager;
+            _tokenizer = tokenizer;
             T = NullLocalizer.Instance;
         }
 
@@ -41,18 +48,38 @@ namespace Orchard.ContentPicker.Drivers {
         protected override DriverResult Editor(ContentPart part, Fields.ContentPickerField field, dynamic shapeHelper) {
             return ContentShape("Fields_ContentPicker_Edit", GetDifferentiator(field, part),
                 () => {
+                    var ids = part.IsNew()
+                        ? GetDefaultids(part, field)
+                        : field.Ids;
                     var model = new ContentPickerFieldViewModel {
                         Field = field,
                         Part = part,
-                        ContentItems = _contentManager.GetMany<ContentItem>(field.Ids, VersionOptions.Latest, QueryHints.Empty).ToList()
+                        ContentItems = _contentManager
+                            .GetMany<ContentItem>(ids, VersionOptions.Latest, QueryHints.Empty).ToList()
                     };
 
-                    model.SelectedIds = string.Join(",", field.Ids);
+                    model.SelectedIds = string.Join(",", ids);
 
                     return shapeHelper.EditorTemplate(TemplateName: "Fields/ContentPicker.Edit", Model: model, Prefix: GetPrefix(field, part));
                 });
         }
 
+        private int[] GetDefaultids(ContentPart part, Fields.ContentPickerField field) {
+            var ids = new int[] { };
+            var settings = field.PartFieldDefinition.Settings.GetModel<ContentPickerFieldSettings>();
+            if (!string.IsNullOrWhiteSpace(settings?.DefaultValue)) {
+                var defaultIds = _tokenizer
+                    .Replace(settings.DefaultValue,
+                        new Dictionary<string, object> { { "Content", part.ContentItem } });
+                if (!string.IsNullOrWhiteSpace(defaultIds)) {
+                    // attempt to parse the string we populated from tokens
+                    ids = ContentPickerField.DecodeIds(defaultIds);
+                }
+            }
+
+            return ids;
+        }
+
         protected override DriverResult Editor(ContentPart part, Fields.ContentPickerField field, IUpdateModel updater, dynamic shapeHelper) {
             var model = new ContentPickerFieldViewModel { SelectedIds = string.Join(",", field.Ids) };
 

src/Orchard.Web/Modules/Orchard.ContentPicker/Fields/ContentPickerField.cs

@@ -21,7 +21,7 @@ namespace Orchard.ContentPicker.Fields {
             }
         }
 
-        private string EncodeIds(ICollection<int> ids) {
+        private static string EncodeIds(ICollection<int> ids) {
             if (ids == null || !ids.Any()) {
                 return string.Empty;
             }
@@ -30,12 +30,25 @@ namespace Orchard.ContentPicker.Fields {
             return "{" + string.Join("},{", ids.ToArray()) + "}";
         }
 
-        private int[] DecodeIds(string ids) {
+        public static int[] DecodeIds(string ids) {
             if(String.IsNullOrWhiteSpace(ids)) {
                 return new int[0];
             }
-
+            // if some of the slices of the string cannot be properly parsed,
-            return ids.Split(separator, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray();
+            // we still will return those that can.
+            return ids
+                .Split(separator, StringSplitOptions.RemoveEmptyEntries)
+                .Select(s => {
+                    int i = -1;
+                    if(int.TryParse(s, out i)) {
+                        return i;
+                    }
+                    // if we can't parse return a negative value
+                    return -1;
+                })
+                // take only those that parsed properly
+                .Where(i => i > 0)
+                .ToArray();
         }
     }
 }

src/Orchard.Web/Modules/Orchard.ContentPicker/Orchard.ContentPicker.csproj

@@ -26,6 +26,7 @@
     <IISExpressWindowsAuthentication />
     <IISExpressUseClassicPipelineMode />
     <UseGlobalApplicationHostFile />
+    <Use64BitIISExpress />
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>
@@ -196,6 +197,10 @@
       <Project>{fbc8b571-ed50-49d8-8d9d-64ab7454a0d6}</Project>
       <Name>Orchard.Localization</Name>
     </ProjectReference>
+    <ProjectReference Include="..\Orchard.Tokens\Orchard.Tokens.csproj">
+      <Project>{6f759635-13d7-4e94-bcc9-80445d63f117}</Project>
+      <Name>Orchard.Tokens</Name>
+    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <Content Include="Views\ContentPicker.Edit.cshtml" />

src/Orchard.Web/Modules/Orchard.ContentPicker/Settings/ContentPickerFieldEditorEvents.cs

@@ -28,6 +28,7 @@ namespace Orchard.ContentPicker.Settings {
                 builder.WithSetting("ContentPickerFieldSettings.Multiple", model.Multiple.ToString(CultureInfo.InvariantCulture));
                 builder.WithSetting("ContentPickerFieldSettings.ShowContentTab", model.ShowContentTab.ToString(CultureInfo.InvariantCulture));
                 builder.WithSetting("ContentPickerFieldSettings.DisplayedContentTypes", model.DisplayedContentTypes);
+                builder.WithSetting("ContentPickerFieldSettings.DefaultValue", model.DefaultValue);
             }
 
             yield return DefinitionTemplate(model);

src/Orchard.Web/Modules/Orchard.ContentPicker/Settings/ContentPickerFieldSettings.cs

@@ -10,5 +10,7 @@
 
         public bool ShowContentTab { get; set; }
         public string DisplayedContentTypes { get; set; }
+
+        public string DefaultValue { get; set; }
     }
 }

src/Orchard.Web/Modules/Orchard.ContentPicker/Views/DefinitionTemplates/ContentPickerFieldSettings.cshtml

@@ -14,7 +14,7 @@
 </fieldset>
 <fieldset>
     <label for="@Html.FieldIdFor(m => m.Hint)">@T("Help text")</label>
-    @Html.TextAreaFor(m => m.Hint, new { @class = "text medium", rows = "5" } )
+    @Html.TextAreaFor(m => m.Hint, new { @class = "text medium", rows = "5" })
     <span class="hint">@T("The help text is written under the field when authors are selecting content items.")</span>
     @Html.ValidationMessageFor(m => m.Hint)
 </fieldset>
@@ -31,3 +31,12 @@
         <span class="hint">@T("A comma separated value of all the content types or content parts to display.")</span>
     </div>
 </fieldset>
+<fieldset>
+    <div>
+        <label for="@Html.FieldIdFor(m => m.DefaultValue)">@T("Default value for the array of selected Ids")</label>
+        @Html.TextBoxFor(m => m.DefaultValue, new { @class = "text large tokenized"})
+        <span class="hint">@T("A comma separated list of the ids of selected Items. It also accepts {{ or }} as separators, in line with the serialization normally used for this field.")</span>
+    </div>
+</fieldset>
+
+@Display.TokenHint()