class CommentSerializer(serializers.ModelSerializer):
user = UserSerializerForComment(source='cached_user')
like_count = serializers.SerializerMethodField()
has_liked = serializers.SerializerMethodField()
class Meta:
model = Comment
fields = (
'id',
'tweet_id',
'user',
'created_at',
'updated_at',
'content',
'like_count',
'has_liked',
)
def get_like_count(self, obj):
return obj.like_set.count()
def get_has_liked(self, obj):
return LikeService.get_has_liked(
user=self.context['request'].user,
obj=obj,
)
class CommentSerializer(serializers.ModelSerializer):
# 如果不加user解析， 那么展示的user只是user_id
# 加了解析之后，展示的user是一个hash
# CommentSerializer嵌套了一个UserSerializer
user = UserSerializerForComment(source='cached_user')
has_liked = serializers.SerializerMethodField()
likes_count = serializers.SerializerMethodField()
class Meta:
model = Comment
fields = (
'id',
'tweet_id',
'user',
'content',
'created_at',
'updated_at',
'has_liked',
'likes_count',
)
def get_has_liked(self, obj):
return LikeService.has_liked(self.context['request'].user, obj)
def get_likes_count(self, obj):
return obj.like_set.count()
class CommentSerializer(serializers.ModelSerializer):
user = UserSerializerForComment()
likes_count = serializers.SerializerMethodField()
has_liked = serializers.SerializerMethodField()
class Meta:
model = Comment
# the below fields 用的是tuple （ 而不是 数组 【， 虽然数组也work，但是tuple更好，因为tuple不可更改
fields = (
'id',
'tweet_id',
'user',
'content',
'created_at',
'updated_at',
'likes_count',
'has_liked',
)
def get_likes_count(self, obj):
return obj.like_set.count()
def get_has_liked(self, obj):
# 这个request.user 只是当下发送请求的用户，可以是登录的也可以没有登录
return LikeService.has_liked(self.context['request'].user, obj)
class CommentSerializer(serializers.ModelSerializer):
user = UserSerializerForComment(source='cached_user')
class Meta:
model = Comment
fields = ('id', 'tweet_id', 'user', 'content', 'created_at',
'updated_at')
class CommentSerializer(serializers.ModelSerializer):
# 如果此处不定义user的话，fields中的user会以user_id的形式显示
# 使用了UserSerializer之后就会用UserSerializer的格式来显示user
user = UserSerializerForComment()
class Meta:
model = Comment
fields = (
'id',
'tweet_id',
'user',
'content',
'created_at',
'updated_at',
)