2

app/db.py

@@ -0,0 +1,19 @@
+from flask import current_app, g
+from werkzeug.local import LocalProxy
+from flask_pymongo import PyMongo
+
+
+def get_db():
+    """
+    Configuration method to return db instance
+    """
+    db = getattr(g, "_database", None)
+
+    if db is None:
+        db = g._database = PyMongo(current_app).db
+
+    return db
+
+
+# Use LocalProxy to read the global db instance with just `db`
+db = LocalProxy(get_db)