Add Resource filtering and table display functionality

atlas/filters.py

@@ -12,6 +12,8 @@ from .models import (
     Structure,
     Subspecialty,
     NormalCase,
+    Resource,
+    Site,
 )
 from django.contrib.auth.models import User
 from django.db.models import Q
@@ -335,6 +337,25 @@ class NormalCaseFilter(django_filters.FilterSet):
             return queryset
         return queryset.filter(age_days__lte=days)
 
+
+class ResourceFilter(django_filters.FilterSet):
+    name = django_filters.CharFilter(field_name='name', lookup_expr='icontains')
+    site = django_filters.ModelMultipleChoiceFilter(field_name='sites', queryset=lambda request: Site.objects.all() if True else Site.objects.none())
+    subspecialty = django_filters.ModelMultipleChoiceFilter(field_name='subspecialty', queryset=Subspecialty.objects.all())
+    author = django_filters.ModelMultipleChoiceFilter(queryset=get_authors, null_label='No author')
+    has_file = django_filters.BooleanFilter(method='filter_has_file', label='Has file')
+
+    class Meta:
+        model = Resource
+        fields = ('name', 'site', 'subspecialty', 'author')
+
+    def filter_has_file(self, queryset, name, value):
+        if value is True:
+            return queryset.exclude(file__isnull=True).exclude(file__exact='')
+        elif value is False:
+            return queryset.filter(file__isnull=True) | queryset.filter(file__exact='')
+        return queryset
+
 class QuestionSchemaFilter(django_filters.FilterSet):
     class Meta:
         model = QuestionSchema