On Tue, 2008-02-12 at 18:30 -0800, Julien wrote:
> Hello,
>
> The module was not compiled, because it was the __import__ function
> itself that raised an exception and so didn't have the chance to do
> the compilation.
>
> As you've suggested, I tried:
>
> klass = __import__("myapp", {}, {}, [''])
> -> Works, returns <module myapp>
>
> klass = __import__("myapp.forms", {}, {}, [''])
> -> Works, returns <module myapp.forms>, and compiles "forms.pyc"!!
>
> klass = __import__("myapp.forms", {}, {}, ['MyModelForm'])
> -> Works, and returns the same thing as above: <module myapp.forms>
>
> But, although the module is now compiled, the following still doesn't
> work:
> klass = __import__("myapp.forms.MyModelForm", {}, {}, [''])
>
> For info, MyModelForm is an instance of ModelFormMetaclass. I also
> tried importing another model, still in vain:
> klass = __import__("myapp.models.MyOtherModel", {}, {}, [''])
Oh, doh! I'm an idiot. The answer was there all along.
You can't do "import myapp.models.MyOtherModel", because MyOtherModel
isn't a *module*. It's something inside a module. That's just normal
Python behaviour.
So you have to do
module = __import__("myapp.forms", {}, {}, ['MyModelForm'])
(using either 'MyModelForm' or '' in the last component). Then
klass = module.MyModelForm
Of course, in your case, that means splitting off the last dotted piece
of the string to work out the form class. This is exactly what we do in
django.template.loader.find_template_source(), for example, to separate
the template loader function from the model it's contained in.
I'm so sorry for misleading you for a little while there. Complete brain
failure on my part. But it all makes perfect sense now.
Regards,
Malcolm
--
Depression is merely anger without enthusiasm.
http://www.pointy-stick.com/blog/
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