How To Enumerate New Column?

In my Django admin I have a TabularInLine class. In the picture, each element of this class is numbered with it's own ID. This TabularInLine class has a foreign key to an other cla

Solution 1:

you can define your own insert operation which does those steps:

• query database with your new entry's foreign key
• get count of results
• assign my_id=count+1

let's say you already have that table in your database. you want to add a new entry to database, which has FK="three".

• query DB for objects(FK="three").
• count of results is 2. (the last two rows)
• assign my_id=3