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[Django] 23 - DRF: Add Ingredient API

django API 23 add drf

2023-09-27 14:23:23 时间

Ref: https://www.udemy.com/course/django-python-advanced/learn/lecture/32236808#notes 104-109

Model

Test Case

    def test_create_ingredient(self):
        """Test creating an ingredient is successful."""

        user = create_user()
        # Next, go adhead to create model.
        ingredient = models.Ingredient.objects.create(
            user=user,
            name='Ingredient1'
        )

        self.assertEqual(str(ingredient), ingredient.name)

Model Implementation

class Ingredient(models.Model):
    """Ingredient for recipes."""
    name = models.CharField(max_length=255)
    user = models.ForeignKey(
        settings.AUTH_USER_MODEL,
        on_delete=models.CASCADE,
    )

    def __str__(self):
        return self.name

Recipe内部也要跟进。

class Recipe(models.Model):
    """Recipe object."""
    ... ...
    # 90-2 add, then register in admin.
    tags        = models.ManyToManyField('Tag')
    ingredients = models.ManyToManyField('Ingredient')

admin.site.register(models.Tag)
admin.site.register(models.Ingredient)

View

Test Case

class PublicIngredientsApiTests(TestCase):
    """Test unauthenticated API requests."""

    def setUp(self):
        self.client = APIClient()

    def test_auth_required(self):
        """Test auth is required for retrieving ingredients."""
        res = self.client.get(INGREDIENTS_URL)

        self.assertEqual(res.status_code, status.HTTP_401_UNAUTHORIZED)

PublicIngredientsApiTests

class PrivateIngredientsApiTests(TestCase):
    """Test authenticated API requests."""

    def setUp(self):
        self.user= create_user()
        self.client= APIClient()
        self.client.force_authenticate(self.user)

    def test_retrieve_ingredients(self):
        """Test retrieving a list of ingredients."""
        Ingredient.objects.create(user=self.user, name='Kale')
        Ingredient.objects.create(user=self.user, name='Vanilla')

        res = self.client.get(INGREDIENTS_URL)  # 获得了两个object的信息

        ingredients = Ingredient.objects.all().order_by('-name')
        serializer  = IngredientSerializer(ingredients, many=True)
        self.assertEqual(res.status_code, status.HTTP_200_OK)
        self.assertEqual(res.data, serializer.data)

    def test_ingredients_limited_to_user(self):
        """Test list of ingredients is limited to authenticated user."""
        user2 = create_user(email='user2@example.com')
        ret        = Ingredient.objects.create(user=user2,     name='Salt')  # <---- 另外一个 user
        ingredient = Ingredient.objects.create(user=self.user, name='Pepper')

        res = self.client.get(INGREDIENTS_URL)

        # 这里专门只检查了一个属于该user的ingredient
        self.assertEqual(res.status_code, status.HTTP_200_OK)
        self.assertEqual(len(res.data), 1)    # 因为是不同的用户，所以这里只会出现该用户的一个数据
        self.assertEqual(res.data[0]['name'], ingredient.name)
        self.assertEqual(res.data[0]['id'],   ingredient.id)

    # ------------------------------------------------------------------------------------------

    def test_update_ingredient(self):
        """Test updating an ingredient."""
        ingredient = Ingredient.objects.create(user=self.user, name='Cilantro')

        payload = {'name': 'Coriander'}
        url = detail_url(ingredient.id)
        res = self.client.patch(url, payload)

        self.assertEqual(res.status_code, status.HTTP_200_OK)
        ingredient.refresh_from_db()
        self.assertEqual(ingredient.name, payload['name'])

    def test_delete_ingredient(self):
        """Test deleting an ingredient."""
        ingredient = Ingredient.objects.create(user=self.user, name='Lettuce')

        url = detail_url(ingredient.id)
        res = self.client.delete(url)

        self.assertEqual(res.status_code, status.HTTP_204_NO_CONTENT)
        ingredients = Ingredient.objects.filter(user=self.user)
        self.assertFalse(ingredients.exists())

Serializers

class IngredientSerializer(serializers.ModelSerializer):
    """Serializer for ingredients."""

    class Meta:
        model = Ingredient
        fields = ['id', 'name']
        read_only_fields = ['id']

View

自己实现了一个基类：BaseRecipeAttrViewSet。

More: [Django] 21 - DRF: APIView vs Viewsets

class BaseRecipeAttrViewSet(mixins.DestroyModelMixin,
                            mixins.UpdateModelMixin,
                            mixins.ListModelMixin,
                            viewsets.GenericViewSet):
    """Base viewset for recipe attributes."""

    authentication_classes = [TokenAuthentication]
    permission_classes     = [IsAuthenticated]

    def get_queryset(self):
        """Filter queryset to authenticated user."""
        return self.queryset.filter(user=self.request.user).order_by('-name')


class IngredientViewSet(BaseRecipeAttrViewSet):
    """Manage ingredients in the database."""

    serializer_class = serializers.IngredientSerializer
    queryset         = Ingredient.objects.all()

Create a recipe with new ingredients

Recipe

Test Case

文件 test_recipe_api.py

   def test_create_recipe_with_new_ingredients(self):
        """Test creating a recipe with new ingredients."""

        payload = {
            'title': 'Cauliflower Tacos',
            'time_minutes': 60,
            'price': Decimal('4.30'),
            'ingredients': [{'name': 'Cauliflower'}, {'name': 'Salt'}],  # 顺便也创建了ingredients object
        }
        res = self.client.post(RECIPES_URL, payload, format='json')

        self.assertEqual(res.status_code, status.HTTP_201_CREATED)
        recipes = Recipe.objects.filter(user=self.user)
        self.assertEqual(recipes.count(), 1)
        recipe = recipes[0]
        self.assertEqual(recipe.ingredients.count(), 2)
        for ingredient in payload['ingredients']:
            exists = recipe.ingredients.filter(
                name=ingredient['name'],
                user=self.user,
            ).exists()
            self.assertTrue(exists)

    def test_create_recipe_with_existing_ingredient(self):
        """Test creating a new recipe with existing ingredient."""

        ingredient = Ingredient.objects.create(user=self.user, name='Lemon')
        payload = {
            'title': 'Vietnamese Soup',
            'time_minutes': 25,
            'price': '2.55',
            'ingredients': [{'name': 'Lemon'}, {'name': 'Fish Sauce'}],
        }
        res = self.client.post(RECIPES_URL, payload, format='json')

        self.assertEqual(res.status_code, status.HTTP_201_CREATED)
        recipes = Recipe.objects.filter(user=self.user)
        self.assertEqual(recipes.count(), 1)
        recipe = recipes[0]
        self.assertEqual(recipe.ingredients.count(), 2)
        self.assertIn(ingredient, recipe.ingredients.all())
        for ingredient in payload['ingredients']:
            exists = recipe.ingredients.filter(
                name=ingredient['name'],
                user=self.user,
            ).exists()
            self.assertTrue(exists)

    def test_create_ingredient_on_update(self):
        """Test creating an ingredient when updating a recipe."""

        recipe = create_recipe(user=self.user)

        payload = {'ingredients': [{'name': 'Limes'}]}
        url = detail_url(recipe.id)
        res = self.client.patch(url, payload, format='json')

        self.assertEqual(res.status_code, status.HTTP_200_OK)
        new_ingredient = Ingredient.objects.get(user=self.user, name='Limes')
        self.assertIn(new_ingredient, recipe.ingredients.all())

    def test_update_recipe_assign_ingredient(self):
        """Test assigning an existing ingredient when updating a recipe."""

        ingredient1 = Ingredient.objects.create(user=self.user, name='Pepper')
        recipe = create_recipe(user=self.user)
        recipe.ingredients.add(ingredient1)

        ingredient2 = Ingredient.objects.create(user=self.user, name='Chili')
        payload = {'ingredients': [{'name': 'Chili'}]}
        url = detail_url(recipe.id)
        res = self.client.patch(url, payload, format='json')

        self.assertEqual(res.status_code, status.HTTP_200_OK)
        self.assertIn(ingredient2, recipe.ingredients.all())
        self.assertNotIn(ingredient1, recipe.ingredients.all())

    def test_clear_recipe_ingredients(self):
        """Test clearing a recipes ingredients."""

        ingredient = Ingredient.objects.create(user=self.user, name='Garlic')
        recipe = create_recipe(user=self.user)
        recipe.ingredients.add(ingredient)

        payload = {'ingredients': []}
        url = detail_url(recipe.id)
        res = self.client.patch(url, payload, format='json')

        self.assertEqual(res.status_code, status.HTTP_200_OK)
        self.assertEqual(recipe.ingredients.count(), 0)

Serializers

recipe 中相应的 ingredients 部分需要更新。

class RecipeSerializer(serializers.ModelSerializer):
    """Serializer for recipes."""tags= TagSerializer(many=True, required=False)
    ingredients = IngredientSerializer(many=True, required=False)

    class Meta:
        model = Recipe
        fields = [
            'id', 'title', 'time_minutes', 'price', 'link', 'tags',
            'ingredients',
        ]
        read_only_fields = ['id']


class RecipeDetailSerializer(RecipeSerializer):
    """Serializer for recipe detail view."""

    class Meta(RecipeSerializer.Meta):
        fields = RecipeSerializer.Meta.fields + ['description']

    def _get_or_create_tags(self, tags, recipe):
        """Handle getting or creating tags as needed."""
        auth_user = self.context['request'].user
        for tag in tags:
            tag_obj, created = Tag.objects.get_or_create(
                user=auth_user,
                **tag,
            )
            recipe.tags.add(tag_obj)

    def _get_or_create_ingredients(self, ingredients, recipe):
        """Handle getting or creating ingredients as needed."""
        auth_user = self.context['request'].user
        for ingredient in ingredients:
            ingredient_obj, created = Ingredient.objects.get_or_create(
                user=auth_user,
                **ingredient,
            )
            recipe.ingredients.add(ingredient_obj)

    def create(self, validated_data):
        """Create a recipe."""
        tags        = validated_data.pop('tags',        [])  # <--
        ingredients = validated_data.pop('ingredients', [])  # <--
        recipe = Recipe.objects.create(**validated_data)

        self._get_or_create_tags(tags, recipe)  # ---->
        self._get_or_create_ingredients(ingredients, recipe)  # ---->

        return recipe

    def update(self, instance, validated_data):
        """Update recipe."""
        tags        = validated_data.pop('tags',        None)
        ingredients = validated_data.pop('ingredients', None)
        if tags is not None:
            instance.tags.clear()
            self._get_or_create_tags(tags, instance)
        if ingredients is not None:
            instance.ingredients.clear()
            self._get_or_create_ingredients(ingredients, instance)

        for attr, value in validated_data.items():
            setattr(instance, attr, value)

        instance.save()
        return instance

Not support writable nested fields by default

$ source pytest.sh
Starting c2-recipe-app-api-2_db_1 ... done
Creating test database for alias 'default'...
System check identified no issues (0 silenced).
............FF.FFFFFF.FF..FF.........................Waiting for database...
Database unavailable, waiting 1 second...
Database unavailable, waiting 1 second...
Database unavailable, waiting 1 second...
Database unavailable, waiting 1 second...
Database unavailable, waiting 1 second...
Database available!
.Waiting for database...
Database available!
.
======================================================================
FAIL: test_clear_album_photos (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test clearing a albums photos.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 368, in test_clear_album_photos
    res = self.client.patch(url, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 311, in patch
    response = super().patch(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 217, in patch
    return self.generic('PATCH', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 82, in partial_update
    return self.update(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 68, in update
    self.perform_update(serializer)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 78, in perform_update
    serializer.save()
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 200, in save
    self.instance = self.update(self.instance, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 969, in update
    raise_errors_on_nested_writes('update', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.update()` method does not support writable nested fields by default.
Write an explicit `.update()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_clear_album_tags (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test clearing a albums tags.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 282, in test_clear_album_tags
    res = self.client.patch(url, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 311, in patch
    response = super().patch(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 217, in patch
    return self.generic('PATCH', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 82, in partial_update
    return self.update(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 68, in update
    self.perform_update(serializer)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 78, in perform_update
    serializer.save()
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 200, in save
    self.instance = self.update(self.instance, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 969, in update
    raise_errors_on_nested_writes('update', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.update()` method does not support writable nested fields by default.
Write an explicit `.update()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_create_album_with_existing_photo (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test creating a new album with existing photo.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 318, in test_create_album_with_existing_photo
    res = self.client.post(ALBUMS_URL, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 295, in post
    response = super().post(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 209, in post
    return self.generic('POST', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 19, in create
    self.perform_create(serializer)
  File "/app/dataset/views.py", line 39, in perform_create
    serializer.save(user=self.request.user)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 205, in save
    self.instance = self.create(validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 925, in create
    raise_errors_on_nested_writes('create', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.create()` method does not support writable nested fields by default.
Write an explicit `.create()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_create_album_with_existing_tags (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test creating a album with existing tag.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 232, in test_create_album_with_existing_tags
    res = self.client.post(ALBUMS_URL, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 295, in post
    response = super().post(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 209, in post
    return self.generic('POST', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 19, in create
    self.perform_create(serializer)
  File "/app/dataset/views.py", line 39, in perform_create
    serializer.save(user=self.request.user)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 205, in save
    self.instance = self.create(validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 925, in create
    raise_errors_on_nested_writes('create', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.create()` method does not support writable nested fields by default.
Write an explicit `.create()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_create_album_with_new_photos (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test creating a album with new photos.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 295, in test_create_album_with_new_photos
    res = self.client.post(ALBUMS_URL, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 295, in post
    response = super().post(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 209, in post
    return self.generic('POST', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 19, in create
    self.perform_create(serializer)
  File "/app/dataset/views.py", line 39, in perform_create
    serializer.save(user=self.request.user)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 205, in save
    self.instance = self.create(validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 925, in create
    raise_errors_on_nested_writes('create', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.create()` method does not support writable nested fields by default.
Write an explicit `.create()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_create_album_with_new_tags (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test creating a album with new tags.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 209, in test_create_album_with_new_tags
    res = self.client.post(ALBUMS_URL, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 295, in post
    response = super().post(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 209, in post
    return self.generic('POST', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 19, in create
    self.perform_create(serializer)
  File "/app/dataset/views.py", line 39, in perform_create
    serializer.save(user=self.request.user)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 205, in save
    self.instance = self.create(validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 925, in create
    raise_errors_on_nested_writes('create', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.create()` method does not support writable nested fields by default.
Write an explicit `.create()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_create_photo_on_update (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test creating an photo when updating a album.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 339, in test_create_photo_on_update
    res = self.client.patch(url, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 311, in patch
    response = super().patch(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 217, in patch
    return self.generic('PATCH', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 82, in partial_update
    return self.update(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 68, in update
    self.perform_update(serializer)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 78, in perform_update
    serializer.save()
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 200, in save
    self.instance = self.update(self.instance, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 969, in update
    raise_errors_on_nested_writes('update', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.update()` method does not support writable nested fields by default.
Write an explicit `.update()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_create_tag_on_update (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test create tag when updating a album.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 253, in test_create_tag_on_update
    res = self.client.patch(url, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 311, in patch
    response = super().patch(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 217, in patch
    return self.generic('PATCH', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 82, in partial_update
    return self.update(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 68, in update
    self.perform_update(serializer)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 78, in perform_update
    serializer.save()
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 200, in save
    self.instance = self.update(self.instance, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 969, in update
    raise_errors_on_nested_writes('update', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.update()` method does not support writable nested fields by default.
Write an explicit `.update()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_full_update (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test full update of album.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 165, in test_full_update
    self.assertEqual(getattr(album, k), v)
AssertionError: 'Sample album description.' != 'New album description'
- Sample album description.
? ^^^^^                   -
+ New album description
? ^ +


======================================================================
FAIL: test_get_album_detail (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test get album detail.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 107, in test_get_album_detail
    self.assertEqual(res.data, serializer.data)
AssertionError: {'id'[113 chars] 'tags': [], 'photos': []} != {'id'[113 chars] 'tags': [], 'photos': [], 'description': 'Sample description'}

======================================================================
FAIL: test_update_album_assign_photo (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test assigning an existing photo when updating a album.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 354, in test_update_album_assign_photo
    res = self.client.patch(url, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 311, in patch
    response = super().patch(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 217, in patch
    return self.generic('PATCH', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 82, in partial_update
    return self.update(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 68, in update
    self.perform_update(serializer)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 78, in perform_update
    serializer.save()
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 200, in save
    self.instance = self.update(self.instance, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 969, in update
    raise_errors_on_nested_writes('update', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.update()` method does not support writable nested fields by default.
Write an explicit `.update()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

======================================================================
FAIL: test_update_album_assign_tag (dataset.tests.test_album_api.PrivateAlbumApiTests)
Test assigning an existing tag when updating a album.
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/app/dataset/tests/test_album_api.py", line 268, in test_update_album_assign_tag
    res = self.client.patch(url, payload, format='json')
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 311, in patch
    response = super().patch(
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 217, in patch
    return self.generic('PATCH', path, data, content_type, **extra)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 233, in generic
    return super().generic(
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 473, in generic
    return self.request(**r)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 285, in request
    return super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/test.py", line 237, in request
    request = super().request(**kwargs)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 719, in request
    self.check_exception(response)
  File "/py/lib/python3.9/site-packages/django/test/client.py", line 580, in check_exception
    raise exc_value
  File "/py/lib/python3.9/site-packages/django/core/handlers/exception.py", line 47, in inner
    response = get_response(request)
  File "/py/lib/python3.9/site-packages/django/core/handlers/base.py", line 181, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/py/lib/python3.9/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/py/lib/python3.9/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 82, in partial_update
    return self.update(request, *args, **kwargs)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 68, in update
    self.perform_update(serializer)
  File "/py/lib/python3.9/site-packages/rest_framework/mixins.py", line 78, in perform_update
    serializer.save()
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 200, in save
    self.instance = self.update(self.instance, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 969, in update
    raise_errors_on_nested_writes('update', self, validated_data)
  File "/py/lib/python3.9/site-packages/rest_framework/serializers.py", line 790, in raise_errors_on_nested_writes
    assert not any(
AssertionError: The `.update()` method does not support writable nested fields by default.
Write an explicit `.update()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

----------------------------------------------------------------------
Ran 55 tests in 9.716s

FAILED (failures=12)
Destroying test database for alias 'default'...

View Code

AssertionError: The `.update()` method does not support writable nested fields by default.
Write an explicit `.update()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

AssertionError: The `.create()` method does not support writable nested fields by default.
Write an explicit `.create()` method for serializer `dataset.serializers.AlbumSerializer`, or set `read_only=True` on nested serializer fields.

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