Question

我的序列化器未显示相关模型。我的意思是具有多对一关系的模型。请参见下面的代码。原谅我的英语。

完全使我困惑，请帮忙。我是django的新手。我试图将我的Draft js ContentState保存到数据库。我已将Post模型设为Block模型的Foreignkey。但是，当我尝试使用django-rest-framework序列化程序检索数据时，这些块不会显示。

我尝试自行对它们进行序列化的块也是如此，但不会显示inlineStyleRanges和EntityRanges数据。

#models.py
class Post(models.Model):
    created_by= models.ForeignKey(User, on_delete=models.CASCADE)
    cat= models.ForeignKey(Category, on_delete=models.CASCADE)

class Block(models.Model):
    post = models.ForeignKey(Post, on_delete=models.CASCADE)
    key = models.CharField(max_length=255)
    text = models.TextField()
    type = models.CharField(max_length=90)
    depth = models.IntegerField(default=0)

class InlineStyleRange(models.Model):
    block = models.ForeignKey(Block, on_delete=models.CASCADE)
    offset = models.IntegerField()
    length = models.IntegerField()
    style = models.CharField(max_length=90)

class EntityRange(models.Model):
    block = models.ForeignKey(Block, on_delete=models.CASCADE)
    offset = models.IntegerField()
    length = models.IntegerField()
    key = models.IntegerField()

class Data(models.Model):
    data = models.TextField()

class EntityRangeData(Data):
    enityrange = models.ForeignKey(EntityRange, on_delete=models.CASCADE)

#Entity map here we go


class EntityEntry(models.Model):
    key = models.IntegerField()
    block= models.ForeignKey(Block, on_delete=models.CASCADE)
    type = models.CharField(max_length=90)
    mutability = models.CharField(max_length=90)

class EntityEntryData(Data):
    entityentry = models.ForeignKey(EntityEntry, on_delete=models.CASCADE)

```#Serializers.py```


class EntityEntryDataSerializer(serializers.ModelSerializer):


    class Meta:
        model = models.EntityEntryData
        fields = "__all__"

class EntityEntrySerializer(serializers.ModelSerializer):
    data = EntityEntryDataSerializer()

    class Meta:
        model = models.EntityEntry
        fields = "__all__"


class EntityRangeDataSerializer(serializers.ModelSerializer):


    class Meta:
        model = models.EntityRangeData
        fields = "__all__"


class EntityRangeSerializer(serializers.ModelSerializer):
    data = EntityRangeDataSerializer()

    class Meta:
        model = models.EntityRange
        fields = "__all__"





class InlineStyleRangeSerializer(serializers.ModelSerializer):


    class Meta:
        model = models.InlineStyleRange
        fields = "__all__"


class BlockSerializer(serializers.ModelSerializer):
    inlineStyleRanges = InlineStyleRangeSerializer(many=True, required=False)
    entityRanges = EntityRangeSerializer(many=True, required=False)

    class Meta:
        model = models.Block
        fields = "__all__"





class PostSerializer(serializers.ModelSerializer):
    blocks = BlockSerializer(many=True, required=False, read_only=True)


    class Meta:
        model = models.Post
        fields = "__all__"

输出类似于

[
    {
        "id": 1,
        "created_by": 1,
        "cat": 2
    }
]

Answer 1

Block模型没有名为inlineStyleRanges或entityRanges的属性，因此您应在ForeignKey字段中使用related_name或指定一个{{1}序列化器中的参数。

source

您可能还必须在inlineStyleRanges = InlineStyleRangeSerializer(many=True, required=False, source='inlinestyle_set') entityRanges = EntityRangeSerializer(many=True, required=False, source='entityrange_set')中包括两个嵌套的序列化器。代替BlockSerializer.Meta.fields，使用列表：

"__all__"

序列化器不显示外键数据

1 个答案: