返回没有Djangoresfram中键的“ReturnList”的值

Question

所以我有这个序列化程序

class MovieSerializer(serializers.ModelSerializer):
    class Meta:
        model = Movie
        fields = ('name', 'thumbnail', 'source_url', 'duration')

class SingleCategorySerializer(serializers.ModelSerializer):
    movies = MovieSerializer(many=True, read_only=True)

    class Meta:
        model = MoviesCategories
        fields = ('movies',)

电影模型与电影类别的关系如下

category = models.ForeignKey(MoviesCategories, related_name="movies", on_delete=models.DO_NOTHING)

现在当我尝试这个的时候 serializer = SingleCategorySerializer(movie_category, many=True)，serializer.data的结果是

[
{
    "movies": [
        {
            "name": "Guardians of the Galaxy",
            "thumbnail": "https://nerdist.com/wp-content/uploads/2016/08/Guardians-of-the-Galaxy-poster-2.jpg",
            "source_url": "http://dl.tehmovies.org/94/10/Star.Wars/Star.Wars.Episode.II.Attack.of.the.Clones.2002.1080p.5.1CH.Tehmovies.ir.mkv",
            "duration": "05:30:09"
        },
        {
            "name": "Star Wars II",
            "thumbnail": "https://images-na.ssl-images-amazon.com/images/I/51TEG6X589L.jpg",
            "source_url": "http://dl.tehmovies.org/94/10/Star.Wars/Star.Wars.Episode.II.Attack.of.the.Clones.2002.1080p.5.1CH.Tehmovies.ir.mkv",
            "duration": "05:32:26"
        }
    ]
}
]

我只希望返回movies的值。像这样

[
    {
        "name": "Guardians of the Galaxy",
        "thumbnail": "https://nerdist.com/wp-content/uploads/2016/08/Guardians-of-the-Galaxy-poster-2.jpg",
        "source_url": "http://dl.tehmovies.org/94/10/Star.Wars/Star.Wars.Episode.II.Attack.of.the.Clones.2002.1080p.5.1CH.Tehmovies.ir.mkv",
        "duration": "05:30:09"
    },
    {
        "name": "Star Wars II",
        "thumbnail": "https://images-na.ssl-images-amazon.com/images/I/51TEG6X589L.jpg",
        "source_url": "http://dl.tehmovies.org/94/10/Star.Wars/Star.Wars.Episode.II.Attack.of.the.Clones.2002.1080p.5.1CH.Tehmovies.ir.mkv",
        "duration": "05:32:26"
    }
]

任何帮助都将不胜感激。你知道吗

Answer 1

根据你的帖子，serializer.data返回

[
{
    "movies": [
        {
            "name": "Guardians of the Galaxy",
            "thumbnail": "https://nerdist.com/wp-content/uploads/2016/08/Guardians-of-the-Galaxy-poster-2.jpg",
            "source_url": "http://dl.tehmovies.org/94/10/Star.Wars/Star.Wars.Episode.II.Attack.of.the.Clones.2002.1080p.5.1CH.Tehmovies.ir.mkv",
            "duration": "05:30:09"
        },
        {
            "name": "Star Wars II",
            "thumbnail": "https://images-na.ssl-images-amazon.com/images/I/51TEG6X589L.jpg",
            "source_url": "http://dl.tehmovies.org/94/10/Star.Wars/Star.Wars.Episode.II.Attack.of.the.Clones.2002.1080p.5.1CH.Tehmovies.ir.mkv",
            "duration": "05:32:26"
         }
    ]
}
]

使用简单的列表索引。serializer.data返回包含一个元素的列表。因此，为了得到这个结果，您可以调用serializer.data[0]。那个元素是字典。所以要访问它，只需使用serializer.data[0]["movies"]。上面写着，“嘿，python，我想要这个列表的第一个元素(序列化程序.data)，从那个元素…哦，它是dict。我可以要一个键为"movies"的项目吗？”你知道吗