On Wednesday, February 2, 2011 4:00:34 PM UTC, Marc Aymerich wrote:
>
> Hi!
> I have a plugin style app that adds "support" for PHP (inserting two
> admin inlines) into VirtualHostAdmin class, I use this code for the
> job:
>
> admin.site.unregister(VirtualHost)
> ix = len(VirtualHostAdmin.inlines)
> VirtualHostAdmin.inlines.insert(ix, PHPVersionInline)
> VirtualHostAdmin.inlines.insert(ix+1, VirtualHostPHPOptionInline)
> admin.site.register(VirtualHost, VirtualHostAdmin)
>
> I don't know why but this inserts the PHPVersionInline and
> VirtualHostPHPOptionInline into ALL of my admin models without an
> admin inline defined. For example:
>
> print "admin model who haven't nothing to do with VirtualHost and have
> NO inlines"
> [<class 'ucp.php.admin.PHPVersionInline'>, <class
> 'ucp.php.admin.VirtualHostPHPOptionInline'>]
>
> print "admin model who haven't nothing to do with VirtualHost and have
> inlines defined"
> [<class 'ucp.pricing.admin.RateInline'>]
>
> consequently, when I try to load a change_forma for
> ucp.pricing.models.Pack django servers raise this exeption:
> <class 'ucp.php.models.PHPVersion'> has no ForeignKey to <class
> 'ucp.pricing.models.Pack'>
>
> Any clue about what's going on here?
>
> Thanks!
> --
> Marc
>
Have a look at the code for the ModelAdmin class in
django.contrib.admin.options. The `inlines` attribute` is defined at class
level. That means it is shared by all instances of ModelAdmin, unless
overridden in a subclass.
Now, strictly speaking this is probably a bug, in that this shouldn't
happen. However, you're hacking around with the inlines in a very very
non-standard way, so I wouldn't be surprised if it never gets fixed. A quick
fix would be to always be sure to create a new list:
inlines = VirtualHostAdmin.inlines or []
inlines.append(PHPVersionInline)
inlines.append(VirtualHostPHPOptionInline)
--
DR.
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