community added, like removed

orm/community.py

@@ -0,0 +1,17 @@
+from datetime import datetime
+from sqlalchemy import Column, Integer, String, ForeignKey, DateTime
+from sqlalchemy.orm import relationship, backref
+from orm.base import Base
+
+
+class Community(Base):
+	__tablename__ = 'community'
+    # id is auto number
+	name: str = Column(String, nullable=False, comment="Name")
+	slug: str = Column(String, unique = True, nullable = False)
+    desc: str = Column(String, nullable=False, default='')
+    pic: str = Column(String, nullable=False, default='')
+	org_id: str = Column(ForeignKey("organization.id"), nullable=True)
+	createdAt: str = Column(DateTime, nullable=False, default = datetime.now, comment="Created at")
+	createdBy: str = Column(ForeignKey("user.id"), nullable=False, comment="Creator")
+