Added transaction management in controllers.

src/api/controller/accounts.py

@@ -46,15 +46,23 @@ def get_months(account_id):
 
 @app.route("/api/accounts", methods=["PUT"])
 def add_account():
+    with session.begin():
+        try:
             account = Account(request.json['name'])
 
             session.add(account)
             session.commit()
 
             return json.dumps("Account added.")
+        except:
+            session.rollback()
+            raise
+
 
 @app.route("/api/accounts/<account_id>", methods=["PUT"])
 def update_account(account_id):
+    with session.begin():
+        try:
             account = session.query(Account).filter(Account.id == account_id).first()
 
             account.name = request.json['name']
@@ -63,13 +71,21 @@ def update_account(account_id):
             session.commit()
 
             return json.dumps("Account #%s updated." % account_id)
+        except:
+            session.rollback()
+            raise
 
 @app.route("/api/accounts/<account_id>", methods=["DELETE"])
 def delete_account(account_id):
+    with session.begin():
+        try:
             account = session.query(Account).filter(Account.id == account_id).first()
         
             session.delete(account)
             session.commit()
         
             return json.dumps("Account #%s deleted." % account_id)
+        except:
+            session.rollback()
+            raise
 

src/api/controller/entries.py

@@ -45,6 +45,8 @@ def get_entries(account_id, year, month):
 
 @app.route("/api/entries", methods=["PUT"])
 def add_entry():
+    with session.begin():
+        try:
             entry = Entry(
               value_date = request.json['value_date'],
               operation_date = request.json['operation_date'],
@@ -58,9 +60,14 @@ def add_entry():
             session.commit()
         
             return json.dumps("Entry added.")
+        except:
+            session.rollback()
+            raise
 
 @app.route("/api/entries/<entry_id>", methods=["PUT"])
 def update_entry(entry_id):
+    with session.begin():
+        try:
             entry = session.query(Entry).filter(Entry.id == entry_id).first()
         
             entry.id = entry_id
@@ -75,14 +82,21 @@ def update_entry(entry_id):
             session.commit()
         
             return json.dumps("Entry #%s updated." % entry_id)
+        except:
+            session.rollback()
+            raise
 
 @app.route("/api/entries/<entry_id>", methods=["DELETE"])
 def delete_entry(entry_id):
+    with session.begin():
+        try:
             entry = session.query(Entry).filter(Entry.id == entry_id).first()
         
             session.delete(entry)
             session.commit()
         
             return json.dumps("Entry #%s deleted." % entry_id)
-
+        except:
+            session.rollback()
+            raise