CODEWITHSUNDEEP
pythondjango
Giovanni Improta
Giovanni Improta

Reputation: 55

Django: same Comment model for different Post types

In my project, I currently have two different post types (but in the future they could be more): Posts and Reviews. Both can be commented, so they could share the same Comment model.

The problem is: if I create two different apps for Post and Review (and eventually other post types), should I share the same Comment model with a GenericForeignKey or should I recreate in each app the same Comment model with a specific ForeignKey? Or maybe I just should put every post type in a unique common app?

Upvotes: 2

Views: 644

Answers (2)

physicalattraction
physicalattraction

Reputation: 6858

I would set it up in one of the following ways.

Easy solution: use when needed

Directory (app) structure:

post
    models.py
review
    models.py
common
    models.py

In common/models.py, you then define the comment:

class Comment(models.Model):
    title = models.CharField(max_length=128, blank=True, default='')
    ...

In post/models.py, you then refer to this class whenever you need it:

from common.models import Comment

class Post(models.Model):
    comment = models.ForeignKey(Comment, related_name='comments')
    ...

Generic solution: mixins

Another option is to create a mixin behavior inside your common app.

class Commentable(models.Model):
    comment = models.ForeignKey(Comment, related_name='comments')

And mix this behavior in by inheriting from it.

from common.models import Commentable

class Post(Commentable, models.Model):
    ...

You should read a bit about mixins before using them all over the place though.

Upvotes: 2

Heval
Heval

Reputation: 348

As another option, you can check django-polymorphic. https://django-polymorphic.readthedocs.io/en/stable/

Upvotes: 0

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