fix

src/app/models/beast-orm.ts

@@ -12,12 +12,12 @@ export class MessageModel extends models.Model {
 	rid =  models.CharField()
 	ts =  JsonField({blank:true})
 	u =  JsonField()
-	_id =  models.CharField({unique:true, blank:true})
+	_id =  models.CharField({blank:true})
 	_updatedAt =  models.IntegerField()
 	messageSend =  models.BooleanField()
 	offline =  models.BooleanField()
-	viewed =  ArrayField() 
-	received =  ArrayField()
+	viewed =  ArrayField({blank:true})
+	received =  ArrayField({blank:true})
 	localReference =  models.CharField({blank:true})
 	attachments =  ArrayField({blank:true})
 	file =  JsonField({blank:true})
@@ -28,10 +28,8 @@ export class DeleteMessageModel extends models.Model {
 
 	messageId = models.CharField()
 	rid =  models.CharField()
-	ts =  JsonField()
 	u =  JsonField()
 	needToReceiveBy = ArrayField()
-
 }
 
 
@@ -39,6 +37,6 @@ export class DeleteMessageModel extends models.Model {
 models.register({
   databaseName: 'chat-storage',
   type: 'indexedDB',		
-  version: 1,
+  version: 4,
   models: [MessageModel, DeleteMessageModel]
 })