Replace custom API filters implementation with django-filter.

api/tests/tests_utils.py

@@ -1,35 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-from django.test import TestCase
-from django.utils import timezone
-
-from rest_framework.views import APIView
-from rest_framework.test import APIRequestFactory
-
-from api.utils import filter_by_params
-from core.models import Child
-
-
-class UtilsTestCase(TestCase):
-    def test_filter_by_params(self):
-        factory = APIRequestFactory()
-
-        Child.objects.create(
-            first_name='First',
-            last_name='Child',
-            birth_date=timezone.localdate())
-        Child.objects.create(
-            first_name='Second',
-            last_name='Child',
-            birth_date=timezone.localdate())
-
-        request = factory.get('/children/')
-        request = APIView().initialize_request(request)
-        response = filter_by_params(request, Child, [])
-        self.assertTrue(response, Child.objects.all())
-
-        request = factory.get('/children/', {'first_name': 'First'})
-        request = APIView().initialize_request(request)
-        response = filter_by_params(request, Child, ['first_name'])
-        self.assertTrue(response, Child.objects.filter(first_name='First'))

api/utils.py

@@ -1,15 +0,0 @@
-# -*- coding: utf-8 -*-
-from __future__ import unicode_literals
-
-
-def filter_by_params(request, model, available_params):
-    """Filters all instances of a model based on request parameters.
-    """
-    queryset = model.objects.all()
-
-    for param in available_params:
-        value = request.query_params.get(param, None)
-        if value is not None:
-            queryset = queryset.filter(**{param: value})
-
-    return queryset

api/views.py

@@ -3,7 +3,6 @@ from __future__ import unicode_literals
 
 from rest_framework import viewsets
 
-from api.utils import filter_by_params
 from core.models import (Child, DiaperChange, Feeding, Note, Sleep, Timer,
                          TummyTime)
 
@@ -16,61 +15,40 @@ class ChildViewSet(viewsets.ModelViewSet):
     queryset = Child.objects.all()
     serializer_class = ChildSerializer
     lookup_field = 'slug'
-
-    def get_queryset(self):
-        params = ['first_name', 'last_name', 'slug']
-        return filter_by_params(self.request, Child, params)
+    filter_fields = ('first_name', 'last_name', 'slug')
 
 
 class DiaperChangeViewSet(viewsets.ModelViewSet):
     queryset = DiaperChange.objects.all()
     serializer_class = DiaperChangeSerializer
-
-    def get_queryset(self):
-        params = ['child__slug', 'wet', 'solid', 'color']
-        return filter_by_params(self.request, DiaperChange, params)
+    filter_fields = ('child', 'wet', 'solid', 'color')
 
 
 class FeedingViewSet(viewsets.ModelViewSet):
     queryset = Feeding.objects.all()
     serializer_class = FeedingSerializer
-
-    def get_queryset(self):
-        params = ['child__slug', 'type', 'method', 'amount']
-        return filter_by_params(self.request, Feeding, params)
+    filter_fields = ('child', 'type', 'method')
 
 
 class NoteViewSet(viewsets.ModelViewSet):
     queryset = Note.objects.all()
     serializer_class = NoteSerializer
-
-    def get_queryset(self):
-        params = ['child__slug']
-        return filter_by_params(self.request, Note, params)
+    filter_fields = ('child',)
 
 
 class SleepViewSet(viewsets.ModelViewSet):
     queryset = Sleep.objects.all()
     serializer_class = SleepSerializer
-
-    def get_queryset(self):
-        params = ['child__slug']
-        return filter_by_params(self.request, Sleep, params)
+    filter_fields = ('child',)
 
 
 class TimerViewSet(viewsets.ModelViewSet):
     queryset = Timer.objects.all()
     serializer_class = TimerSerializer
-
-    def get_queryset(self):
-        params = ['name', 'active', 'user']
-        return filter_by_params(self.request, Timer, params)
+    filter_fields = ('active', 'user')
 
 
 class TummyTimeViewSet(viewsets.ModelViewSet):
     queryset = TummyTime.objects.all()
     serializer_class = TummyTimeSerializer
-
-    def get_queryset(self):
-        params = ['child__slug']
-        return filter_by_params(self.request, TummyTime, params)
+    filter_fields = ('child',)

babybuddy/settings/base.py

@@ -25,6 +25,7 @@ INSTALLED_APPS = [
     'dashboard',
     'reports',
 
+    'django_filters',
     'rest_framework',
     'widget_tweaks',
 
@@ -130,12 +131,15 @@ WHITENOISE_ROOT = os.path.join(BASE_DIR, 'static', 'root')
 # http://www.django-rest-framework.org/#
 
 REST_FRAMEWORK = {
+    'DEFAULT_FILTER_BACKENDS': [
+        'django_filters.rest_framework.DjangoFilterBackend',
+    ],
     'DEFAULT_PERMISSION_CLASSES': [
         'api.permissions.BabyBuddyDjangoModelPermissions'
     ],
-    'DEFAULT_RENDERER_CLASSES': (
+    'DEFAULT_RENDERER_CLASSES': [
         'rest_framework.renderers.JSONRenderer',
-    ),
+    ],
     'DEFAULT_PAGINATION_CLASS':
         'rest_framework.pagination.LimitOffsetPagination',
     'PAGE_SIZE': 100