title: Connection django-select2 with django-filters
body: <p>I want to connect with select2 django with django-filters. I want to have a nice selector to select users.
  I do not know where to put the following code in the code django-filters.</p>
  
  <pre><code>from django_select2 import *
  
  class UserChoices(AutoModelSelect2Field):
      queryset = User.objects
      search_fields = ['word__icontains', ]
  </code></pre>