Cannot insert an entity in the database

15 Oct '14, 03:47 PM
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Hi all,

I've got an entity called Requester that's a subclass of User. Now if someone registers as a Requester he has to be inserted into the database. However, once I try to insert it using a create operation it won't do anything. What am I doing wrong?

I follow these steps

  1. A form based on the Requester (with the entity field wizard).
  2. A data flow to an action
  3. A filter to check if the username is not already taken, if it is a OK to an error field else a OK flow to the action
  4. the action is defined as a OK flow from the input port that expects a Resquester object to a create statement that has the Entity Requester. 
  5. Then a KO and OK flow the the KO port andthe OK port.

However, the Requester is not added in the database. If I set the Entity of the create in the action to User, a User is made in the database... So what goes wrong?

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Forum Expert - Level 6


the Create Operation is meant to work with any kind of entity defined into the Domain Model (persistent, volatile and subclasses).

If the entity you use is a subclass of another entity the Create Operation also create the instance of the super entity.

So in your case, with the Form, the Object and the Operation all set to work on the Requester entity it should also create the related instance for the User entity.

From what you wrote you have to change the Data Flow of the Form into a Normal Navigation Flow, otherwise the user won't be able to see a submit button.

Other points seems to be OK but I suggest you to :

  • run the find model problems procedure (maybe there are model errors)
  • place a breakpoint on the action and try to inspect the execution

Let me know if inspecting the model helps you to find the problem.



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