So I have the following...
What I want is a list of universities with associated provider count but the providers also need an address.
What I have tried:
@universities = University.joins(:providers).select('universities.id, universities.name, universities.slug, providers.id, count(providers.id) as count').group('universities.id').order('count').reverse
Provides a list like:
- id: 14
name: Salus University
slug: salus-university
count: 72
- id: 22
name: University of Florida
slug: university-of-florida
count: 45
The problem is the count includes providers with no address. So I tried the following:
@universities = University.joins(providers: :addresses).select('universities.id, universities.name, universities.slug, providers.id, count(providers.id) as count').group('universities.id').order('count').reverse
However, this gives me the count of the total number of addresses instead of providers with addresses:
- id: 14
name: Salus University
slug: salus-university
count: 90
- id: 22
name: University of Florida
slug: university-of-florida
count: 60
OK, I managed to figure this out finally. I just joined with positions and added distinct
to the count:
@universities = University.joins(providers: :positions).select('universities.id, universities.name, universities.slug, providers.id, count(distinct providers.id) as count').group('universities.id').order('count desc')
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