fix #4855 - dropping required column causes issue on SQLite

Oqtane.Server/Migrations/Tenant/06000101_AddLanguageName.cs

@@ -0,0 +1,32 @@
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Microsoft.EntityFrameworkCore.Migrations;
+using Oqtane.Databases.Interfaces;
+using Oqtane.Migrations.EntityBuilders;
+using Oqtane.Repository;
+
+namespace Oqtane.Migrations.Tenant
+{
+    [DbContext(typeof(TenantDBContext))]
+    [Migration("Tenant.06.00.01.01")]
+    public class AddLanguageName : MultiDatabaseMigration
+    {
+        public AddLanguageName(IDatabase database) : base(database)
+        {
+        }
+
+        protected override void Up(MigrationBuilder migrationBuilder)
+        {
+            // Name column was removed in 5.2.4 however SQLite does not support column removal so it had to be restored
+            if (ActiveDatabase.Name != "Sqlite")
+            {
+                var languageEntityBuilder = new LanguageEntityBuilder(migrationBuilder, ActiveDatabase);
+                languageEntityBuilder.AddStringColumn("Name", 100, true);
+            }
+        }
+
+        protected override void Down(MigrationBuilder migrationBuilder)
+        {
+            // not implemented
+        }
+    }
+}

Oqtane.Server/Repository/LanguageRepository.cs

@@ -31,7 +31,7 @@ public Language AddLanguage(Language language)
                     .ToList()
                     .ForEach(l => l.IsDefault = false);
             }
-
+            language.Name = ""; // stored in database but not used (SQLite limitation)
             db.Language.Add(language);
             db.SaveChanges();
 
@@ -55,6 +55,7 @@ public void UpdateLanguage(Language language)
                     .ForEach(l => l.IsDefault = false);
             }
 
+            language.Name = ""; // stored in database but not used (SQLite limitation)
             db.SaveChanges();
         }
 

Oqtane.Shared/Models/File.cs

@@ -56,7 +56,9 @@ public class File : ModelBase
         public string Description { get; set; }
 
         /// <summary>
-        /// Deprecated - not used
+        /// Deprecated
+        /// Note that this property still exists in the database because columns cannot be dropped in SQLite
+        /// Therefore the property must be retained/mapped even though the framework no longer uses it
         /// </summary>
         public bool? IsDeleted { get; set; }
 

Oqtane.Shared/Models/Folder.cs

@@ -63,7 +63,9 @@ public class Folder : ModelBase
         public bool IsSystem { get; set; }
 
         /// <summary>
-        /// Deprecated - not used
+        /// Deprecated
+        /// Note that this property still exists in the database because columns cannot be dropped in SQLite
+        /// Therefore the property must be retained/mapped even though the framework no longer uses it
         /// </summary>
         public bool? IsDeleted { get; set; }
 

Oqtane.Shared/Models/Language.cs

@@ -29,9 +29,10 @@ public class Language : ModelBase
         /// </summary>
         public bool IsDefault { get; set; }
 
-        [NotMapped]
         /// <summary>
         /// Language Name - corresponds to <see cref="Culture.DisplayName"/>, _not_ <see cref="Culture.Name"/>
+        /// Note that this property still exists in the database because columns cannot be dropped in SQLite
+        /// Therefore the property must be retained/mapped even though the framework populates it from the Culture API
         /// </summary>
         public string Name { get; set; }