合并JWL，WZY，TRM代码
Change-Id: Ifb4fcad3c06733e1e005e7d8d9403e3561010fb4
diff --git a/Merge/back_trm/app/models/topics.py b/Merge/back_trm/app/models/topics.py
new file mode 100644
index 0000000..1a35a38
--- /dev/null
+++ b/Merge/back_trm/app/models/topics.py
@@ -0,0 +1,26 @@
+from . import Base
+from sqlalchemy import Column, Integer, String, Text, Enum, TIMESTAMP
+from sqlalchemy.sql import func
+
+class Topic(Base):
+ __tablename__ = 'topics'
+ __table_args__ = {
+ 'mysql_engine': 'InnoDB',
+ 'mysql_charset': 'utf8mb4',
+ 'mysql_collate': 'utf8mb4_general_ci',
+ 'comment': '话题/超话表'
+ }
+
+ id = Column(Integer, primary_key=True, autoincrement=True, comment='话题ID')
+ name = Column(String(100, collation='utf8mb4_general_ci'), nullable=False, unique=True, comment='话题名称')
+ description = Column(Text(collation='utf8mb4_general_ci'), comment='话题描述')
+ status = Column(
+ Enum('active', 'archived', name='topic_status', collation='utf8mb4_general_ci'),
+ default='active',
+ comment='状态'
+ )
+ created_at = Column(
+ TIMESTAMP,
+ server_default=func.current_timestamp(),
+ comment='创建时间'
+ )
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