Django Tastypie Advanced Filtering: How to do complex lookups with Q objects

Question

I have a basic Django model like:

class Business(models.Model):
    name = models.CharField(max_length=200, unique=True)
    email = models.EmailField()
             


        

Answer 1

Taking the idea in astevanovic's answer and cleaning it up a bit, the following should work and is more succinct.

The main difference is that apply_filters is made more robust by using None as the key instead of custom (which could conflict with a column name).

def build_filters(self, filters=None):
    if filters is None:
        filters = {}
    orm_filters = super(BusinessResource, self).build_filters(filters)

    if 'query' in filters:
        query = filters['query']
        qset = (
                Q(name__icontains=query) |
                Q(description__icontains=query) |
                Q(email__icontains=query)
                )
        orm_filters.update({None: qset}) # None is used as the key to specify that these are non-keyword filters

    return orm_filters

def apply_filters(self, request, applicable_filters):
    return self.get_object_list(request).filter(*applicable_filters.pop(None, []), **applicable_filters)
    # Taking the non-keyword filters out of applicable_filters (if any) and applying them as positional arguments to filter()