GeoDjango: Extending GeoManager with Search Functionality

Question

I am learning to use GeoDjango, and it is my understanding that a GeoManager() is needed to interact with GIS objects.

However, I was trying to build in some search functionality for my models. I found this old post that showed how to build a nifty little search manager using q objects like so:

class NewsPostManager(models.Manager):
    def search(self, search_terms):
        terms = [term.strip() for term in search_terms.split()]
        q_objects = []

        for term in terms:
            q_objects.append(Q(title__icontains=term))
            q_objects.append(Q(content__icontains=term))

        # Start with a bare QuerySet
        qs = self.get_query_set()

        # Use operator's or_ to string together all of your Q objects.
        return qs.filter(reduce(operator.or_, q_objects))

It is my understanding that this wouldn't work for GIS objects, as it doesn't invoke models.GeoManager(). Is there a way to extend models.GeoManager with this added functionality?

I havent tested this, but have you tried subclassing models.GeoManager instead of models.Manager? — cdvv7788, Sep 13 '15 at 04:07
That's a great thought! I will try and figure out how to modernize this code and see if it works. — Adam Starrh, Sep 13 '15 at 04:12

score 1 · Accepted Answer · answered Sep 13 '15 at 05:16

1

You can add extra manager methods. In the case of geodjango you have to override the default manager (objects) with a GeoManager. You need to override models.GeoManager instead of models.Manager to have a custom manager on that case.

answered Sep 13 '15 at 05:16

cdvv7788

2,021
1
18
26

GeoDjango: Extending GeoManager with Search Functionality

1 Answers1