Django 关系模型-自关联

class Component(models.Model):
    """
    组件
    """
    component_name = models.CharField(
        help_text='组件的名称',
        max_length=32
    )
    supplier_name = models.CharField(
        help_text='组件的开发者/组织的名称',
        max_length=128, null=True, blank=True
    )
    version = models.CharField(
        help_text='组件的版本',
        max_length=128
    )
    type = models.CharField(
        help_text='包的类型，例如maven, npm, nuget, gem, pypi, etc.',
        max_length=16,
    )
    parent = models.ForeignKey(
        help_text='包含的子组件',
        to='self',
        on_delete=models.CASCADE,
        null=True,
        blank=True,
        related_name='children',
    )
    class Meta:
        verbose_name = '软件的组件模型'
        verbose_name_plural = verbose_name

class ComponentSerializer(serializers.ModelSerializer):
    class Meta:
        model = sbom_models.Component
        fields = [
            'id', 'supplier_name', 'component_name', 'version', 'children',
        ]
        depth = 1

有一个好技巧，在List的时候不显示children，在Detailde时候则显示children

class ComponentItemSerializer(serializers.ModelSerializer):
    class Meta:
        model = sbom_models.Component
        fields = [
            'id', 'supplier_name', 'component_name', 'version'
        ]
class ComponentSerializer(serializers.ModelSerializer):
    class Meta:
        model = sbom_models.Component
        fields = [
            'id', 'supplier_name', 'component_name', 'version', 'children',
        ]
        depth = 1

class ComponentList(generics.ListCreateAPIView):
    serializer_class = serializers.ComponentItemSerializer
    queryset = models.Component.objects.all()
class ComponentDetail(generics.RetrieveAPIView):
    serializer_class = serializers.ComponentSerializer
    queryset = models.Component.objects.all()