Django - How to get admin url from model instance
Not trying to rip off @JosvicZammit, but using ContentType
is the wrong approach here. It's just a wasted DB query. You can get the require info from the _meta
attribute:
from django.urls import reverse
info = (model_instance._meta.app_label, model_instance._meta.model_name)
admin_url = reverse('admin:%s_%s_change' % info, args=(model_instance.pk,))
Just use this one liner that is also python 3 ready:
from django.urls import reverse
reverse('admin:{0}_{1}_change'.format(self._meta.app_label, self._meta.model_name), args=(self.pk,))
More on this in the django admin site doc, reversing admin urls.
This gives the same result as Josvic Zammit's snippet, but does not hit the database:
from django.urls import reverse
from django.db import models
class MyModel(models.Model):
def get_admin_url(self):
return reverse("admin:%s_%s_change" % (self._meta.app_label, self._meta.model_name), args=(self.id,))
This Django snippet should do:
from django.urls import reverse
from django.contrib.contenttypes.models import ContentType
from django.db import models
class MyModel(models.Model):
def get_admin_url(self):
content_type = ContentType.objects.get_for_model(self.__class__)
return reverse("admin:%s_%s_change" % (content_type.app_label, content_type.model), args=(self.id,))
The self
refers to the parent model class, i.e. self.id
refers to the object's instance id
. You can also set it as a property
on the model by sticking the @property
decorator on top of the method signature.
EDIT: The answer by Chris Pratt below saves a DB query over the ContentType
table. My answer still "works", and is less dependent on the Django model instance._meta
internals. FYI.