Hi,
I am extending a 3rd party model in my application, using multi-table
inheritance. I can create an instance and modify it, but when I try to
list the created objects at http://localhost:8000/en/admin/news/news/ ,
I am getting a nice exception:
Traceback:
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/core/handlers/base.py"
in get_response
140. response = response.render()
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/response.py"
in render
105. self.content = self.rendered_content
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/response.py"
in rendered_content
82. content = template.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in render
140. return self._render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in _render
134. return self.nodelist.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in render
830. bit = self.render_node(node, context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/debug.py"
in render_node
74. return node.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/loader_tags.py"
in render
124. return compiled_parent._render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in _render
134. return self.nodelist.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in render
830. bit = self.render_node(node, context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/debug.py"
in render_node
74. return node.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/loader_tags.py"
in render
124. return compiled_parent._render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in _render
134. return self.nodelist.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in render
830. bit = self.render_node(node, context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/debug.py"
in render_node
74. return node.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/loader_tags.py"
in render
63. result = block.nodelist.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in render
830. bit = self.render_node(node, context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/debug.py"
in render_node
74. return node.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/loader_tags.py"
in render
63. result = block.nodelist.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in render
830. bit = self.render_node(node, context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/debug.py"
in render_node
74. return node.render(context)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/template/base.py"
in render
1185. _dict = func(*resolved_args,
**resolved_kwargs)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/contrib/admin/templatetags/admin_list.py"
in result_list
286. 'results': list(results(cl))}
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/contrib/admin/templatetags/admin_list.py"
in results
264. yield ResultList(None, items_for_result(cl, res,
None))
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/contrib/admin/templatetags/admin_list.py"
in __init__
256. super(ResultList, self).__init__(*items)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/contrib/admin/templatetags/admin_list.py"
in items_for_result
219. url = cl.url_for_result(result)
File
"/home/roberto/.virtualenvs/ve_news/local/lib/python2.7/site-packages/django/contrib/admin/views/main.py"
in url_for_result
380. pk = getattr(result, self.pk_attname)
Exception Type: AttributeError at /en/admin/news/news/
Exception Value: 'News' object has no attribute 'news_ptr_id'
My News model is extending another model using multiple table inheritance.
class News(OldNews):
departments = models.ManyToManyField(Department, blank=True,
related_name='news')
objects = models.Manager()
class Meta:
verbose_name_plural = _('news')
ordering = ('-pub_date', )
I can't understand the reason for this error. Can anyone enlighten me
please?
Roberto
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