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POWhat's the error in my project?
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  1. POWhat's the error in my project?
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    copied!<p>I'm using mongodb for my python(2.7) project with django framework..when i give python manage.py runserver it will work but if i sync the db (python manage.py syncdb) the following error displayed in terminal</p> <pre><code>Creating tables ... Traceback (most recent call last): File "manage.py", line 14, in &lt;module&gt; execute_manager(settings) File "/usr/lib/pymodules/python2.7/django/core/management/__init__.py", line 438, in execute_manager utility.execute() File "/usr/lib/pymodules/python2.7/django/core/management/__init__.py", line 379, in execute self.fetch_command(subcommand).run_from_argv(self.argv) File "/usr/lib/pymodules/python2.7/django/core/management/base.py", line 191, in run_from_argv self.execute(*args, **options.__dict__) File "/usr/lib/pymodules/python2.7/django/core/management/base.py", line 220, in execute output = self.handle(*args, **options) File "/usr/lib/pymodules/python2.7/django/core/management/base.py", line 351, in handle return self.handle_noargs(**options) File "/usr/lib/pymodules/python2.7/django/core/management/commands/syncdb.py", line 109, in handle_noargs emit_post_sync_signal(created_models, verbosity, interactive, db) File "/usr/lib/pymodules/python2.7/django/core/management/sql.py", line 190, in emit_post_sync_signal interactive=interactive, db=db) File "/usr/lib/pymodules/python2.7/django/dispatch/dispatcher.py", line 172, in send response = receiver(signal=self, sender=sender, **named) File "/usr/lib/pymodules/python2.7/django/contrib/auth/management/__init__.py", line 41, in create_permissions "content_type", "codename" File "/usr/lib/pymodules/python2.7/django/db/models/query.py", line 107, in _result_iter self._fill_cache() File "/usr/lib/pymodules/python2.7/django/db/models/query.py", line 772, in _fill_cache self._result_cache.append(self._iter.next()) File "/usr/lib/pymodules/python2.7/django/db/models/query.py", line 959, in iterator for row in self.query.get_compiler(self.db).results_iter(): File "/usr/local/lib/python2.7/dist-packages/djangotoolbox/db/basecompiler.py", line 229, in results_iter for entity in self.build_query(fields).fetch(low_mark, high_mark): File "/usr/local/lib/python2.7/dist-packages/djangotoolbox/db/basecompiler.py", line 290, in build_query query.order_by(self._get_ordering()) File "/usr/local/lib/python2.7/dist-packages/djangotoolbox/db/basecompiler.py", line 339, in _get_ordering raise DatabaseError("Ordering can't span tables on non-relational backends (%s)" % order) </code></pre> <p>and</p> <pre><code>django.db.utils.DatabaseError: Ordering can't span tables on non-relational backends (content_type__app_label) </code></pre> <p>How to solve this problem?</p>
 

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