Merge branch 'master' into request-creator-name

atst/domain/exceptions.py

@@ -14,3 +14,17 @@ class AlreadyExistsError(Exception):
     @property
     def message(self):
         return "{} already exists".format(self.resource_name)
+
+
+class UnauthorizedError(Exception):
+    def __init__(self, user, action):
+        self.user = user
+        self.action = action
+
+    @property
+    def message(self):
+        return "User {} not authorized to {}".format(self.user.id, self.action)
+
+
+class UnauthenticatedError(Exception):
+    pass

atst/domain/requests.py

@@ -1,4 +1,4 @@
-from sqlalchemy import exists, and_
+from sqlalchemy import exists, and_, exc
 from sqlalchemy.orm.exc import NoResultFound
 from sqlalchemy.orm.attributes import flag_modified
 
@@ -42,11 +42,14 @@ class Requests(object):
 
     @classmethod
     def exists(cls, request_id, creator_id):
-        return db.session.query(
-            exists().where(
-                and_(Request.id == request_id, Request.creator == creator_id)
-            )
-        ).scalar()
+        try:
+            return db.session.query(
+                exists().where(
+                    and_(Request.id == request_id, Request.creator == creator_id)
+                )
+            ).scalar()
+        except exc.DataError:
+            return False
 
     @classmethod
     def get(cls, request_id):