manage markdowns by path

db/models/Path.py

@@ -0,0 +1,17 @@
+#db/models/Path.py
+from sqlalchemy import Column, Text, LargeBinary, String, Integer, ForeignKey, UniqueConstraint
+from db.models import Base
+
+
+class Path(Base):
+    __tablename__ = "path"
+    id = Column(Integer, primary_key=True, autoincrement=True)
+    name = Column(String(50), nullable=False)
+    parent_id = Column(Integer, ForeignKey("path.id"))
+    __table_args__ = (UniqueConstraint("parent_id", "name", name="unique_parent_id_name"), )
+    def to_dict(self):
+        return {
+            "id": self.id,
+            "name": self.name,
+            "parent_id": self.parent_id,
+        }