I have a JSON field in my model which stores data like this:

```
{  "old_val": {"status": value1}, 
   "new_val": {"status": value2}
}

```

Now I want to refine my select query so that the result contains all those tuples whose JSON field has, 

```
["new_val"]["status"] = value2 and ["old_val"]["status"] !=value1

```

how do I write this query in django. ???