合并JWL，WZY，TRM代码
Change-Id: Ifb4fcad3c06733e1e005e7d8d9403e3561010fb4
diff --git a/Merge/back_wzy/utils/serializers.py b/Merge/back_wzy/utils/serializers.py
new file mode 100644
index 0000000..1ed5445
--- /dev/null
+++ b/Merge/back_wzy/utils/serializers.py
@@ -0,0 +1,16 @@
+# utils/serializers.py
+from marshmallow import Schema, fields, validate, ValidationError
+
+class PostSchema(Schema):
+ user_id = fields.Int(required=True)
+ topic_id = fields.Int(required=False, allow_none=True)
+ type = fields.Str(validate=validate.OneOf(['text','image','video','document']), missing='text')
+ title = fields.Str(required=True, validate=validate.Length(min=1, max=255))
+ content = fields.Str(required=True)
+ media_urls = fields.List(fields.Url(), required=False)
+ status = fields.Str(validate=validate.OneOf(['draft','pending','published','deleted','rejected']), missing='draft')
+
+class CommentSchema(Schema):
+ user_id = fields.Int(required=True)
+ content = fields.Str(required=True, validate=validate.Length(min=1))
+ parent_id = fields.Int(required=False, allow_none=True)