on delete options django

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Elin
21 May 2018
1There are seven possible actions to take when such event occurs:
2
3CASCADE: When the referenced object is deleted, also delete the objects that have references to it 
4  (when you remove a blog post for instance, you might want to delete comments as well). 
5  SQL equivalent: CASCADE.
6      
7PROTECT: Forbid the deletion of the referenced object. 
8  To delete it you will have to delete all objects that reference it manually. 
9  SQL equivalent: RESTRICT.
10    
11RESTRICT: (introduced in Django 3.1) Similar behavior as PROTECT that matches SQL's RESTRICT more accurately. (See django documentation example)
12SET_NULL: Set the reference to NULL (requires the field to be nullable). 
13  For instance, when you delete a User, you might want to keep the comments he posted on blog posts, 
14  but say it was posted by an anonymous (or deleted) user. 
15  SQL equivalent: SET NULL.
16    
17SET_DEFAULT: Set the default value. SQL equivalent: SET DEFAULT.
18    
19SET(...): Set a given value. This one is not part of the SQL standard and is entirely handled by Django.
20  
21DO_NOTHING: Probably a very bad idea since this would create integrity issues in your database 
22  (referencing an object that actually doesn't exist). SQL equivalent: NO ACTION.
source
Eric
01 Jun 2016
1HTTP 200 OK
2Allow: GET, HEAD, OPTIONS
3Content-Type: application/json
4Vary: Accept
5
6{
7    "count": 0,
8    "next": null,
9    "previous": null,
10    "results": []
11}
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