Settings: Fix how modified source lists are saved

Since an existing source list is fetched from the ViewContext, save
in the scope of that context. This will fix any fetching issues
when grabbing sources from the new URL.

Signed-off-by: kingbri <bdashore3@gmail.com>

Ferrite/DataManagement/PersistenceController.swift

@@ -46,6 +46,10 @@ struct PersistenceController {
         backgroundContext.automaticallyMergesChangesFromParent = true
         backgroundContext.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
         try? backgroundContext.setQueryGenerationFrom(.current)
+
+        container.viewContext.automaticallyMergesChangesFromParent = true
+        container.viewContext.mergePolicy = NSMergeByPropertyObjectTrumpMergePolicy
+        try? container.viewContext.setQueryGenerationFrom(.current)
     }
 
     func save(_ context: NSManagedObjectContext? = nil) {

Ferrite/ViewModels/SourceManager.swift

@@ -274,6 +274,8 @@ public class SourceManager: ObservableObject {
                 existingSourceList.urlString = sourceUrl
                 existingSourceList.name = rawResponse.name
                 existingSourceList.author = rawResponse.author
+
+                try PersistenceController.shared.container.viewContext.save()
             } else {
                 let sourceListRequest = SourceList.fetchRequest()
                 let urlPredicate = NSPredicate(format: "urlString == %@", sourceUrl)
@@ -293,9 +295,9 @@ public class SourceManager: ObservableObject {
                 newSourceUrl.urlString = sourceUrl
                 newSourceUrl.name = rawResponse.name
                 newSourceUrl.author = rawResponse.author
-            }
 
-            try backgroundContext.save()
+                try backgroundContext.save()
+            }
 
             return true
         } catch {