create system request reviews when request is automatically accepted for financial verification

atst/domain/requests/requests.py

@@ -62,13 +62,12 @@ class Requests(object):
     def submit(cls, request):
         request = Requests.set_status(request, RequestStatus.SUBMITTED)
 
-        new_status = None
         if Requests.should_auto_approve(request):
-            new_status = RequestStatus.PENDING_FINANCIAL_VERIFICATION
+            request = Requests.set_status(request, RequestStatus.PENDING_FINANCIAL_VERIFICATION)
+            Requests._add_review(None, request, {"comment": "Auto-approval for dollar value below {}".format(Requests.AUTO_APPROVE_THRESHOLD)})
         else:
-            new_status = RequestStatus.PENDING_CCPO_ACCEPTANCE
+            request = Requests.set_status(request, RequestStatus.PENDING_CCPO_ACCEPTANCE)
 
-        request = Requests.set_status(request, new_status)
         request = RequestsQuery.add_and_commit(request)
 
         return request

atst/models/request_review.py

@@ -10,7 +10,7 @@ class RequestReview(Base, mixins.TimestampsMixin, mixins.AuditableMixin):
     id = types.Id()
     status = relationship("RequestStatusEvent", uselist=False, back_populates="review")
 
-    user_id = Column(ForeignKey("users.id"), nullable=False)
+    user_id = Column(ForeignKey("users.id"))
     reviewer = relationship("User")
 
     comment = Column(String)
@@ -23,7 +23,10 @@ class RequestReview(Base, mixins.TimestampsMixin, mixins.AuditableMixin):
 
     @property
     def full_name_reviewer(self):
-        return self.reviewer.full_name
+        if self.reviewer:
+            return self.reviewer.full_name
+        else:
+            return "System"
 
     @property
     def full_name_mao(self):