'Post' object has no attribute 'get_absolute_url' Django - django

Question

I am trying to create a sitemap in Django but I am getting an error
'Post' object has no attribute 'get_absolute_url'
Here is my anotherfile/sitemap.py
from django.contrib.sitemaps import Sitemap
from somefile.models import Post
class site_map(Sitemap):
changefreq = "daily"
priority = 0.8
def items(self):
return Post.objects.all()
def lastmod(self, obj):
return obj.time_stamp
and here is my somefile/models.py
class Post(models.Model):
number=models.AutoField(primary_key=True)
slug=models.CharField(max_length=130)
time_stamp=models.DateTimeField(blank=True)
def __str__(self):
return self.number

Answer 1

In order to determine the paths in the sitemap, you need to implement a get_absolute_url for the model(s) for which you make a sitemap, so:
from django.urls import reverse
class Post(models.Model):
number=models.AutoField(primary_key=True)
slug=models.CharField(max_length=130)
time_stamp=models.DateTimeField(blank=True)
def get_absolute_url(self):
return reverse('name-of-some-view', kwargs={'para': 'meters'})
def __str__(self):
return self.number
With reverse(…) [Django-doc] you can calculate the URL based on the name of the view, and parameters that the corresponding path needs.

Answer 2

I've never used it, but it simply sounds like your Post model doesn't have a get_absolute_url method.
http://docs.djangoproject.com/en/dev/ref/contrib/sitemaps/#django.contrib.sitemaps.Sitemap.location
If location isn't provided, the framework will call the
get_absolute_url() method on each object as returned by items().
Model.get_absolute_url()
Define a get_absolute_url() method to tell Django how to calculate the canonical URL for an object. To callers, this method should appear to return a string that can be used to refer to the object over HTTP.
For example:
def get_absolute_url(self):
return "/post/%i/" % self.id