I have models: Contract and Incident. 

In Incident form, I have button Send to Create and Send incident form. 

When click Send button:

- Successfully: Check Room has Contract is Active -> Create Incident form + Change state to In Progress + Send noti.

- Failed: Check Room has not contract or Contract is Draft -> Not allow create Incident form + Show error message ( ValidationError("NotFoundAnywhereContractWithStateActive"))