Fix for singletons.

backend/src/Squidex.Domain.Apps.Entities/Contents/DomainObject/ContentDomainObject.cs

@@ -94,7 +94,11 @@ namespace Squidex.Domain.Apps.Entities.Contents.DomainObject
 
                         await CreateCore(c);
 
-                        if (Is.OptionalChange(Snapshot.EditingStatus, c.Status))
+                        if (context.Schema.SchemaDef.IsSingleton)
+                        {
+                            ChangeStatus(c.AsChange(Status.Published));
+                        }
+                        else if (Is.OptionalChange(Snapshot.EditingStatus, c.Status))
                         {
                             await ChangeCore(c.AsChange(c.Status.Value));
                         }

backend/tools/TestSuite/TestSuite.ApiTests/SchemaTests.cs

@@ -47,6 +47,35 @@ namespace TestSuite.ApiTests
             Assert.Contains(schemas.Items, x => x.Name == schemaName);
         }
 
+        [Fact]
+        public async Task Should_create_singleton_schema()
+        {
+            var schemaName = $"schema-{Guid.NewGuid()}";
+
+            // STEP 1: Create schema
+            var createRequest = new CreateSchemaDto { Name = schemaName, IsSingleton = true };
+
+            var schema = await _.Schemas.PostSchemaAsync(_.AppName, createRequest);
+
+            // Should return created schemas with correct name.
+            Assert.Equal(schemaName, schema.Name);
+
+
+            // STEP 2: Get all schemas
+            var schemas = await _.Schemas.GetSchemasAsync(_.AppName);
+
+            // Should provide new schema when apps are schemas.
+            Assert.Contains(schemas.Items, x => x.Name == schemaName);
+
+
+            // STEP 3: Get singleton content
+            var client = _.ClientManager.CreateDynamicContentsClient(schemaName);
+
+            var content = await client.GetAsync(schema.Id);
+
+            Assert.NotNull(content);
+        }
+
         [Fact]
         public async Task Should_create_schema_with_checkboxes()
         {