第七篇-2 序列化

表结构：

路由：

class SourceSerializer(serializers.ModelSerializer):

    def validate_name(self, value):
        if '草' in value:
            raise ValidationError('不符合社会主义核心价值观')
        return value

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

视图：

路由：

class CommentSerializer(serializers.ModelSerializer):
    class Meta:
        model = models.Comment
        fields = "__all__"
        extra_kwargs = {
            "content": {"error_messages": {"required": "评论内容不能为空"}},
            "article": {"error_messages": {"required": "文章不能为空"}}
        }

视图：

路由：

class TagSerializer(serializers.ModelSerializer):

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


class ArticleSerializer(serializers.ModelSerializer):
    type = serializers.CharField(source="get_type_display")
    tag = TagSerializer(many=True)

    class Meta:
        model = models.Article
        fields = ["id", "title", "type", "source", "tag"]


class ArticleWriteSerializer(serializers.ModelSerializer):

    class Meta:
        model = models.Article
        fields = "__all__"
        extra_kwargs = {
            "tag": {
                "error_messages": {
                    "does_not_exist": '"{pk_value}"对应的tag对象不存在。'
                }
            }
        }

视图：

路由：

class ArticleHyperlinkedSerializer(serializers.HyperlinkedModelSerializer):
    source = serializers.HyperlinkedIdentityField(view_name='source-detail', lookup_field='source_id', lookup_url_kwarg='pk')

    class Meta:
        model = models.Article
        fields = ["id", "type", "title", "source"]
        depth = 1

视图：

class ArticleLinked(APIView):
    def get(self, request, *args, **kwargs):
        res = {"code": 0}
        article_list = models.Article.objects.all()
        ser_obj = ArticleHyperlinkedSerializer(article_list, many=True, context={'request': request})
        res["data"] = ser_obj.data
        return Response(res)