worked on system, added member, advisor & admin management.

models/city.py

@@ -45,7 +45,7 @@ class City:
         cur = self.connection.cursor()
         cur.execute("""
             UPDATE cities SET
-                name = ?,
+                name = ?
             WHERE id = ?
             """, (self.name, self.id))
 
@@ -53,6 +53,13 @@ class City:
         cur.close()
         return True
     
+    def delete(self):
+        cur = self.connection.cursor()
+        cur.execute("""DELETE FROM logs WHERE id = ?""", (self.id))
+        self.connection.commit()
+        cur.close()
+        return True
+    
     def _set_row_values(self, row):
         self.id = row[0]
         self.name = row[1]