Create utility function for the pattern of committing to the database or raising AlreadyExistsError

atst/domain/task_orders.py

@@ -1,11 +1,10 @@
 import datetime
-from sqlalchemy.exc import IntegrityError
 
 from atst.database import db
 from atst.models.clin import CLIN
 from atst.models.task_order import TaskOrder, SORT_ORDERING
 from . import BaseDomainClass
-from .exceptions import AlreadyExistsError
+from atst.utils import update_or_raise_already_exists_error
 
 
 class TaskOrders(BaseDomainClass):
@@ -16,15 +15,8 @@ class TaskOrders(BaseDomainClass):
     def create(cls, portfolio_id, number, clins, pdf):
         task_order = TaskOrder(portfolio_id=portfolio_id, number=number, pdf=pdf)
         db.session.add(task_order)
-
-        try:
-            db.session.commit()
-        except IntegrityError:
-            db.session.rollback()
-            raise AlreadyExistsError("task_order")
-
+        update_or_raise_already_exists_error(message="task_order")
         TaskOrders.create_clins(task_order.id, clins)
-
         return task_order
 
     @classmethod
@@ -42,12 +34,7 @@ class TaskOrders(BaseDomainClass):
             task_order.number = number
             db.session.add(task_order)
 
-        try:
-            db.session.commit()
-        except IntegrityError:
-            db.session.rollback()
-            raise AlreadyExistsError("task_order")
-
+        update_or_raise_already_exists_error(message="task_order")
         return task_order
 
     @classmethod