Common fields auto values

[Domagoj Kovač]

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?

[Mike Dewhirst]

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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