#18285: bulk_create and ManyToMany relationships: the relationship is actually
not
made
-------------------------------------+-------------------------------------
Reporter: Michael PALUMBO | Owner: nobody
<michael.palumbo87@…> | Status: new
Type: | Version: 1.4
Cleanup/optimization | Resolution:
Component: Documentation | Triage Stage: Accepted
Severity: Normal | Needs documentation: 0
Keywords: bulk_create, | Patch needs improvement: 0
relationship | UI/UX: 0
Has patch: 0 |
Needs tests: 0 |
Easy pickings: 0 |
-------------------------------------+-------------------------------------
Changes (by moritzs):
* component: Database layer (models, ORM) => Documentation
* type: Bug => Cleanup/optimization
Comment:
[https://docs.djangoproject.com/en/1.4/ref/models/querysets/#bulk-create
Documentation] says:
>This has a number of caveats though:
>
>* The model's save() method will not be called, and the pre_save and
post_save signals will not be sent.
>* It does not work with child models in a multi-table inheritance
scenario.
>* If the model's primary key is an !AutoField it does not retrieve and
set the primary key attribute, as save() does.
There is a reason why the bulk_create method does not call the models'
save methods. It should be a fast alternative to call the models' save
methods in a loop.
So I think the documentation should be clarified rather then modifying
bulk_create.
--
Ticket URL: <https://code.djangoproject.com/ticket/18285#comment:2>
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