Fix status field.

backend/src/Squidex.Domain.Apps.Core.Model/Schemas/FieldNames.cs

@@ -32,7 +32,7 @@ public sealed class FieldNames : ReadonlyList<string>
         "translationStatusAverage"
     ];
 
-    public static readonly new FieldNames Empty = new FieldNames(new List<string>());
+    public static readonly new FieldNames Empty = new FieldNames([]);
 
     private FieldNames()
     {

backend/src/Squidex.Domain.Apps.Entities.MongoDb/Contents/Operations/Extensions.cs

@@ -186,12 +186,19 @@ public static class Extensions
 
                 foreach (var field in fields)
                 {
-                    var dataField =
-                        FieldNames.IsDataField(field, out var fieldName) ?
-                        fieldName :
-                        field;
-
-                    yield return $"{dataPrefix}.{dataField}";
+                    var actualFieldName = field;
+                    // Only add data fields, because we add all meta fields anyway.
+                    if (FieldNames.IsDataField(field, out var dataField))
+                    {
+                        actualFieldName = dataField;
+                    }
+
+                    var fullName = $"{dataPrefix}.{actualFieldName}";
+
+                    if (!MetaFields.ContainsKey(fullName))
+                    {
+                        yield return fullName;
+                    }
                 }
             }
 
@@ -203,13 +210,14 @@ public static class Extensions
             foreach (var field in allFields)
             {
                 // If there is at least one field that is a prefix of the current field, we cannot add that.
-                if (addedFields.Exists(x => field.StartsWith(x, StringComparison.OrdinalIgnoreCase)))
+                if (addedFields.Exists(x => field.StartsWith(x, StringComparison.Ordinal)))
                 {
                     continue;
                 }
 
                 projections.Add(projector.Include(field));
 
+                // Track added prefixes.
                 addedFields.Add(field);
             }
         }

backend/tests/Squidex.Domain.Apps.Entities.Tests/Contents/MongoDb/ExtensionsTests.cs

@@ -51,6 +51,22 @@ public class ExtensionsTests
         AssertProjection(projection, "{ '_ai' : 1, '_id' : 1, '_si' : 1, 'ai' : 1, 'cb' : 1, 'ct' : 1, 'dl' : 1, 'do.myField' : 1, 'id' : 1, 'is' : 1, 'mb' : 1, 'mt' : 1, 'ns' : 1, 'rf' : 1, 'sa' : 1, 'si' : 1, 'sj' : 1, 'ss' : 1, 'ts' : 1, 'vs' : 1 }");
     }
 
+    [Fact]
+    public void Should_build_projection_with_status_data_field()
+    {
+        var projection = ExtensionSut.BuildProjection2<MongoContentEntity>(["data.Status"]);
+
+        AssertProjection(projection, "{ '_ai' : 1, '_id' : 1, '_si' : 1, 'ai' : 1, 'cb' : 1, 'ct' : 1, 'dl' : 1, 'do.Status' : 1, 'id' : 1, 'is' : 1, 'mb' : 1, 'mt' : 1, 'ns' : 1, 'rf' : 1, 'sa' : 1, 'si' : 1, 'sj' : 1, 'ss' : 1, 'ts' : 1, 'vs' : 1 }");
+    }
+
+    [Fact]
+    public void Should_build_projection_with_meta_status_field()
+    {
+        var projection = ExtensionSut.BuildProjection2<MongoContentEntity>(["status"]);
+
+        AssertProjection(projection, "{ '_ai' : 1, '_id' : 1, '_si' : 1, 'ai' : 1, 'cb' : 1, 'ct' : 1, 'dl' : 1, 'do.status' : 1, 'id' : 1, 'is' : 1, 'mb' : 1, 'mt' : 1, 'ns' : 1, 'rf' : 1, 'sa' : 1, 'si' : 1, 'sj' : 1, 'ss' : 1, 'ts' : 1, 'vs' : 1 }");
+    }
+
     private static void AssertProjection(ProjectionDefinition<MongoContentEntity, MongoContentEntity> projection, string expected)
     {
         var rendered =