def create(self, request, *args, **kwargs):
serializer = LikeSerializerForCreate(data=request.data,
context={'request': request})
if not serializer.is_valid():
return Response(
{
'message': 'Please check input.',
'errors': serializer.errors,
},
status=status.HTTP_400_BAD_REQUEST)
#instance, created = serializer.get_or_create()
#if created:
# NotificationService.send_like_notification(instance)
# use Message Queue to create Like in DB
if serializer.validated_data['content_type'] == 'comment':
content_type_int = 0
model_class = Comment
else:
content_type_int = 1
model_class = Tweet
object_id = serializer.validated_data['object_id']
LikeService.async_create_like(content_type_int, object_id,
request.user.id)
instance = Like(
content_type=ContentType.objects.get_for_model(model_class),
object_id=object_id,
user=request.user,
)
return Response(
LikeSerializer(instance).data,
status=status.HTTP_201_CREATED,
)
def create(self, request, *args, **kwargs):
serializer = LikeSerializerForCreate(
data=request.data,
context={'request': request},
)
if not serializer.is_valid():
return Response(
{
'message': 'Please check input',
'errors': serializer.errors,
},
status=status.HTTP_400_BAD_REQUEST)
instance = serializer.create(serializer.validated_data)
return Response(LikeSerializer(instance).data,
status=status.HTTP_201_CREATED)
def create(self, request, *args, **kwargs):
serializer = LikeSerializerForCreate(data=request.data,
context={'request': request})
if not serializer.is_valid():
return Response(
{
'message': 'Please check input',
'errors': serializer.errors,
},
status=status.HTTP_400_BAD_REQUEST)
instance, created = serializer.get_or_create()
if created:
NotificationService.send_like_notification(instance)
return Response(LikeSerializer(instance).data,
status=status.HTTP_201_CREATED)
class CommentSerializerWithLikes(serializers.ModelSerializer):
user = UserSerializerForComment(source='cached_user')
likes = LikeSerializer(source='like_set', many=True)
likes_count = serializers.SerializerMethodField()
has_liked = serializers.SerializerMethodField()
class Meta:
model = Comment
fields = ('id', 'tweet_id', 'user', 'content', 'likes_count',
'has_liked', 'likes', 'created_at', 'updated_at')
def get_likes_count(self, obj):
return obj.like_set.count()
def get_has_liked(self, obj):
return LikeService.has_liked(self.context['request'].user, obj)
class TweetSerializerForDetail(TweetSerializer):
comments = CommentSerializer(source='comment_set', many=True)
likes = LikeSerializer(source='like_set', many=True)
class Meta:
model = Tweet
fields = (
'id',
'user',
'created_at',
'content',
'likes',
'comments',
'comments_count',
'likes_count',
'has_liked',
)
def create(self, request):
serialzier = LikeSerializerForCreate(
data=request.data,
context={'request': request},
)
if not serialzier.is_valid():
return Response(
{
"success": False,
"message": "Please check input.",
"errors": serialzier.errors,
},
status=HTTP_400_BAD_REQUEST)
like = serialzier.save()
#send like notification
NotificationService.send_like_notificaion(like)
return Response(LikeSerializer(like).data, status=HTTP_201_CREATED)
def create(self, request):
serializer = LikeSerializerForCreate(
data=request.data,
context={'request': request},
)
if not serializer.is_valid():
return Response({
'success': False,
'error': serializer.errors,
},
status=status.HTTP_400_BAD_REQUEST)
like, created = serializer.get_or_create()
# raise notifications in creation, do not dispatch notifications if liked
if created:
NotificationService.send_like_notification(like)
return Response({
'success': True,
'like': LikeSerializer(like).data
},
status=status.HTTP_200_OK)
class TweetSerializerForDetail(TweetSerializer):
comments = CommentSerializer(source='comment_set', many=True)
likes = LikeSerializer(source='like_set', many=True)
class Meta:
model = Tweet
# 下列fields的option必须写完整，不能因为 class TweetSerializerForDetail 继承了 TweetSerializer，
# 而不罗列 TweetSerializer 的Meta class 里面的fields
fields = (
'id',
'user',
'comments',
'created_at',
'content',
'likes',
'comments',
'likes_count',
'comments_count',
'has_liked',
'photo_urls',
)
class TweetSerializerForDetail(TweetSerializer):
user = UserSerializerForTweet()
# <HOMEWORK> 使用 serialziers.SerializerMethodField 的方式实现 comments
comments = CommentSerializer(source='comment_set', many=True)
likes = LikeSerializer(source='like_set', many=True)
class Meta:
model = Tweet
fields = (
'id',
'user',
'comments',
'created_at',
'content',
'likes',
'comments',
'likes_count',
'comments_count',
'has_liked',
'photo_urls',
)
class TweetSerializerForDetail(TweetSerializer):
comments = CommentSerializer(source='comment_set', many=True)
likes = LikeSerializer(source='like_set', many=True)
class Meta:
model = Tweet
fields = (
'id',
'user',
'comments',
'created_at',
'content',
'likes',
'comments',
'likes_count',
'comments_count',
'has_liked',
'photo_urls',
)
def get_comments(self, obj):
return CommentSerializer(obj.comment_set.all(), many=True).data
class TweetSerializersWithCommentsAndLikes(serializers.ModelSerializer):
user = UserSerializerForTweet(source='cached_user')
comments = CommentSerializerWithLikes(source='comment_set', many=True)
likes = LikeSerializer(source='like_set', many=True)
has_liked = serializers.SerializerMethodField()
comments_count = serializers.SerializerMethodField()
likes_count = serializers.SerializerMethodField()
photo_urls = serializers.SerializerMethodField()
class Meta:
model = Tweet
fields = (
'id',
'user',
'content',
'comments',
'likes',
'has_liked',
'likes_count',
'comments_count',
'photo_urls',
'created_at',
)
def get_has_liked(self, obj):
return LikeService.has_liked(self.context['request'].user, obj)
def get_comments_count(self, obj):
return obj.comment_set.count()
def get_likes_count(self, obj):
return obj.like_set.count()
def get_photo_urls(self, obj):
photo_urls = []
for photo in obj.tweetphoto_set.all().order_by('order'):
photo_urls.append(photo.file.url)
return photo_urls
