Re: Common fields auto values

On 24/10/2013 12:21am, Domagoj Kovač wrote:
> Hi guys,
>
> I have a question. I am working on an application that i can use as a
> starting point for my future projects.
>
> I have a core application that has CommonFields abstract model defined as:
>
> from django.db import models
> from django.contrib.auth.models import User
>
> class CommonFields(models.Model):
>
> created = models.DateTimeField(editable=False, auto_now_add=True)
> created_by = models.ForeignKey(User, related_name="created",
> editable=False)
> modified = models.DateTimeField(editable=False, auto_now=True)
> modified_by = models.ForeignKey(User, related_name="modified",
> editable=False)
> deleted = models.DateTimeField(editable=False)
> deleted_by = models.ForeignKey(User, related_name="deleted",
> editable=False)
>
> class Meta:
> abstract = True
>
> All other models inherit this one.
> I want to populate this fields automatically, something
> like auto_now_add=True but for *_by fields where i want to add current
> user, is there any way that i could do this?

Yes.

See p257-263 of the first edition of Pro Django by Marty Alchin. He
discusses a custom field (CurrentUserField) and middleware to
auto-populate it whenever a model is saved. I see there is a second
edition recently released. I found the entire book to be very valuable.

Recommended

Mike

>
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