new workspace and task order routes

atst/domain/task_orders.py

@@ -0,0 +1,35 @@
+from sqlalchemy.orm.exc import NoResultFound
+
+from atst.database import db
+from atst.models.task_order import TaskOrder
+from .exceptions import NotFoundError
+
+
+class TaskOrders(object):
+    @classmethod
+    def get(cls, task_order_id):
+        try:
+            task_order = db.session.query(TaskOrder).filter_by(id=task_order_id).one()
+
+            return task_order
+        except NoResultFound:
+            raise NotFoundError("task_order")
+
+    @classmethod
+    def create(cls, workspace, creator):
+        task_order = TaskOrder(workspace=workspace, creator=creator)
+
+        db.session.add(task_order)
+        db.session.commit()
+
+        return task_order
+
+    @classmethod
+    def update(cls, task_order, **kwargs):
+        for key, value in kwargs.items():
+            setattr(task_order, key, value)
+
+        db.session.add(task_order)
+        db.session.commit()
+
+        return task_order