manage markdowns by path

db/models/Markdown.py

@@ -1,5 +1,5 @@
 #db/models/Markdown.py
-from sqlalchemy import Column, Text, Integer, String, DateTime
+from sqlalchemy import Column, Text, Integer, String, DateTime, ForeignKey
 from db.models import Base
 import datetime
 
@@ -9,7 +9,7 @@ class Markdown(Base):
     title = Column(String(255), nullable=False)
     content = Column(Text, nullable=False)
     created_at = Column(DateTime, default=datetime.datetime.utcnow)
-    path = Column(String(255), nullable=False)
+    path_id = Column(Integer, ForeignKey('path.id'), nullable=False)
 
     def to_dict(self):
         return {
@@ -17,5 +17,5 @@ class Markdown(Base):
             'title': self.title,
             'content': self.content,
             'created_at': self.created_at,
-            'path': self.path,
+            'path_id': self.path_id,
         }