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POExplicit argument in signature does not work? Very odd
 

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  1. POExplicit argument in signature does not work? Very odd
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    <p>I'm trying to understand why explicitly specifying the signature arguments doesn't work, but just blindly doing an *args, **kwargs works! I really don't see much difference between the two?</p> <p>Example that does not work:</p> <pre><code>from django.db.models import CharField as _CharField class CharField(_CharField): def get_db_prep_value(self, value, connection, prepared=False): if self.blank == self.null == self.unique == True and value == '': value = None return super(CharField, self).get_db_prep_value(value, connection, prepared) # &lt;--- this does not work! </code></pre> <p>and I get the following error:</p> <pre><code> File "/home/googledroid/Workspace/eclipse/gameproject/virtualenv/lib/python2.6/site-packages/django/db/models/fields/__init__.py", line 276, in get_db_prep_save return self.get_db_prep_value(value, connection=connection, prepared=False) File "/home/googledroid/Workspace/eclipse/gameproject/virtualenv/lib/python2.6/site-packages/django/db/models/fields/subclassing.py", line 53, in inner return func(*args, **kwargs) File "/home/googledroid/Workspace/eclipse/gameproject/src/fields/__init__.py", line 13, in get_db_prep_value return super(CharField, self).get_db_prep_value(value, connection, prepared) File "/home/googledroid/Workspace/eclipse/gameproject/virtualenv/lib/python2.6/site-packages/django/db/models/fields/subclassing.py", line 53, in inner return func(*args, **kwargs) File "/home/googledroid/Workspace/eclipse/gameproject/virtualenv/lib/python2.6/site-packages/django/db/models/fields/subclassing.py", line 53, in inner return func(*args, **kwargs) TypeError: get_db_prep_value() got multiple values for keyword argument 'connection' </code></pre> <p>While this works just fine:</p> <pre><code>from django.db.models import CharField as _CharField class CharField(_CharField): def get_db_prep_value(self, value, *args, **kwargs): if self.blank == self.null == self.unique == True and value == '': value = None return super(CharField, self).get_db_prep_value(value, *args, **kwargs) </code></pre> <p>In django source, <code>django.db.models.subclassing.call_with_connection_and_prepared.inner()</code>,I see there is some deletion of kwargs, but not entirely sure why?</p>
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