[SOLVED] How can I use django-haystack search facets with custom attributes?

How can I use django-haystack search facets with custom attributes?

I have a Django-oscar shop and I successfully installed Solr 4.7.2 as search engine. It works great with the predefined attributes, e.g. upc, title, product_class...

But filtering for additional attributes did not work.

Thats my catalogue/models.py:

class Product(AbstractProduct):
    video_url = models.URLField()
    co2 = models.IntegerField()
    is_public = models.BooleanField()
    test = models.TextField()

In search_indexes.py, I tried to add something like:

co2 = indexes.IntegerField(model_attr="co2", null=True, indexed=False)

def prepare_co2(self, obj):
        return self.apps.get_model().objects.filter(co2="2")
       # return obj.co2 etc. here I tried a lot of code, but didnt work

I also tried to copy the ready-made code for this function.

Has anyone an idea, how to do that? When I filter for catalogue.products.title it works fine but not with cataolgue.products.co2 (which I have suplemented myself).

Solution

It was a problem with my django-oscar version. I updated it and now I can successfully reindex the schema.xml.