add support for multiple database users

databases/models.py

@@ -10,6 +10,10 @@ class Databases(models.Model):
     dbName = models.CharField(max_length=50,unique=True)
     dbUser = models.CharField(max_length=50)
 
+class DatabasesUsers(models.Model):
+    owner = models.ForeignKey(Databases, on_delete=models.CASCADE)
+    username = models.CharField(max_length=50,unique=True)
+
 class DBMeta(models.Model):
     database = models.ForeignKey(Databases, on_delete=models.CASCADE)
     key = models.CharField(max_length=200)

plogical/upgrade.py

@@ -1454,6 +1454,20 @@ imap_folder_list_limit = 0
   PRIMARY KEY (`id`)
 )"""
 
+            try:
+                cursor.execute(query)
+            except:
+                pass
+
+            query = "CREATE TABLE `databases_databasesusers` (`id` integer AUTO_INCREMENT NOT NULL PRIMARY KEY, `username` varchar(50) NOT NULL UNIQUE, `owner_id` integer NOT NULL)"
+
+            try:
+                cursor.execute(query)
+            except:
+                pass
+
+            query = "ALTER TABLE `databases_databasesusers` ADD CONSTRAINT `databases_databasesu_owner_id_908fc638_fk_databases` FOREIGN KEY (`owner_id`) REFERENCES `databases_databases` (`id`);"
+
             try:
                 cursor.execute(query)
             except: