Héllo frocco,
2013/1/13 frocco <faro...@gmail.com>
>
> in models.py
>
> def get_categories(self):
> return self.objects.filter('category_class <> "sales'
>
Use classmethod
decorator<http://docs.python.org/2/library/functions.html#classmethod>to
achieve that, like this:
@classmethod
def get_categories(cls):
return cls.objects.filter(category_class='sales')
I replaced self by cls since the first argument is now the class. Also the
filter query is not correct, you have to use
exclude<https://docs.djangoproject.com/en/dev/ref/models/querysets/#django.db.models.query.QuerySet.exclude>
.
Mind the fact that this is not very django way of doing queries, using
class methods or similar DAO pattern is not the most often used method to
do querying with ORMs (AFAIK). Most of the time queries are inlined in the
view or other code like this:
def view(request):
queryset = Category.objects.exclude(category_class='sales')
context = Context({'title': 'Search', 'form': form, 'data': data})
return render_to_response('index.html', context)
If you use very often this queryset you might want to create a manager for
it, read the documentation regarding
managers<https://docs.djangoproject.com/en/dev/topics/db/managers/>
.
>
> in views.py
>
> data = Category.get_categories()
> context = Context({'title': 'Search', 'form': form, 'data': data})
> return render_to_response('index.html', context)
> this is not working.
>
>
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