Model and Permissions | 易学教程

问题

I'm currently learning python/django As a Tutorial for myself I have done that:

create user --> ok
login user created --> ok
create a new model called 'Article' with title and content as a properties --> ok
create several 'Article' instances --> ok
I display all the articles at the root of the webapp -->
Last step is: in order to manipulate permission, only display some article depending on which user is logged with permissions. like if user A: then display only the article with odd ids (that doesn't make any sence but it's for learning)

It seems to be very complicated to do 'permission by instance' by hand right ?

Cheers

回答1:

First we have to create our 2 permissions

from django.db import models

class Article(models.Model):
    title = models.TextField()
    content = models.TextField()

    class Meta:
        permissions = (
            ('can_view_odd_ids', 'can_view_odd_ids'),
            ('can_view_even_ids', 'can_view_even_ids'),
        )

    def __str__(self):
        return self.title

after running the migration, we can manually apply the permission to our users using the shell

odd_even = Permission.objects.get(name='can_view_even_ids')
user_yui = User.objects.get(username='yui')
user_yui.user_permissions.add(odd_even)
user_yui.save()

and then test in the view the permission on our users (something like that)

def my_view(request):
    data = {}
    if request.user.is_authenticated():
        count = Article.objects.all().count()
        if request.user.has_perm("account.can_view_odd_ids"):
            data = {'articles': Article.objects.all()[1::2]})
        elif request.user.has_perm("account.can_view_even_ids"):
            data = {'articles': Article.objects.all()[0::2]})
    return render(request, 'index.html', data)

回答2:

When you say 'I need permission by instance' probably you mean 'I need to use django-guardian' https://django-guardian.readthedocs.org/en/stable/

来源：https://stackoverflow.com/questions/30156375/model-and-permissions

标签

django

django-models