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POdjango CLI script and database router: cannot import name connections
 

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  1. POdjango CLI script and database router: cannot import name connections
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    <p>I made a database ruter for <code>myapp</code> application in file <code>/myproject/myapp/routers.py</code></p> <pre><code>class ShardingRouter(object): def db_for_read(self, model, **hints): return 'default' def db_for_write(self, model, **hints): return 'default' def allow_relation(self, obj1, obj2, **hints): return None def allow_syncdb(self, db, model): return None </code></pre> <p>In <code>settings.py</code> I have:</p> <pre><code>from django.db import connections DATABASE_ROUTERS = ['myproject.myapp.routers.ShardingRouter',] </code></pre> <p>This works well for normal application running through wsgi, but I have one CLI script <code>/myproject/parser_jobs.py</code> it is starting with cron or manually from CLI:</p> <pre><code>import os, sys if __name__ == "__main__": os.environ.setdefault("DJANGO_SETTINGS_MODULE", "settings") ... ... if __name__ == "__main__": do_some_long_boring_work() </code></pre> <p>now, when i run this script, I'm getting import error:</p> <pre><code>Traceback (most recent call last): File "/hosting/myproject/myproject/parser_jobs.py", line 20, in &lt;module&gt; import settings File "/hosting/myproject/myproject/settings.py", line 46, in &lt;module&gt; from django.db import connections File "/usr/local/lib/python2.7/dist-packages/django/db/__init__.py", line 11, in &lt;module&gt; if DEFAULT_DB_ALIAS not in settings.DATABASES: File "/usr/local/lib/python2.7/dist-packages/django/utils/functional.py", line 184, in inner self._setup() File "/usr/local/lib/python2.7/dist-packages/django/conf/__init__.py", line 42, in _setup self._wrapped = Settings(settings_module) File "/usr/local/lib/python2.7/dist-packages/django/conf/__init__.py", line 95, in __init__ raise ImportError("Could not import settings '%s' (Is it on sys.path?): %s" % (self.SETTINGS_MODULE, e)) ImportError: Could not import settings 'myproject.myproject' (Is it on sys.path?): cannot import name connections </code></pre> <p>Looks like it found settings.py, but while importing it fails on <code>from django.db import connections</code>. If i comment this string, it works, but without my db router:( I can add <code>using()</code> everywhere, but it's not cool.</p> <p>So, website works good, but cli script fails. Please, help!</p> <hr> <p>update: <code>/hosting/myproject/myproject/parser_jobs.py</code> worked good from cli, before I added DB router</p> <p><code>pprint</code> of <code>sys.path</code> in this script:</p> <pre><code>['/hosting/myproject/myproject', '/hosting/myproject', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-linux2', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages', '/usr/lib/python2.7/dist-packages/PIL', '/usr/lib/python2.7/dist-packages/gst-0.10', '/usr/lib/python2.7/dist-packages/gtk-2.0', '/usr/lib/python2.7/dist-packages/ubuntu-sso-client', '/usr/lib/pymodules/python2.7'] </code></pre> <hr> <p>update: wsgi script, website works good with it:</p> <pre><code>import os import sys path = '/hosting/myproject' if path not in sys.path: sys.path.insert(0, path) os.environ['DJANGO_SETTINGS_MODULE'] = 'myproject.settings' import django.core.handlers.wsgi application = django.core.handlers.wsgi.WSGIHandler() </code></pre>
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