Hello,
How can I override the implementation of a table method in an Extension class?
I am developing a custom Workflow for Sales Order, for that i need to override *CanSubmitToWorkflow* method in table. For now, according to my understanding this can only be achieved by Overlayering which definitely is not a good practice. Can someone here guide me if there is any workaround?
You can achieve the same through Extension
you create an augmentation class.
For example, a new field that is named MyInventLocationId was added to the InventTable table through extension. A data event handler was also created for the Inserting event, and you must implement the logic of filling the new field there. To encapsulate that action, you will create a new method on InventTable and name that method myDefaultInventLocationId.
You first create a new class in the extension model. This class will augment the InventTable table, and enable access to the table's fields and methods in a manner that is easy to read and understand. It's important that you choose the correct name for your augmentation class. This name must be unique across all types in all models that are deployed.
In D365FO extension of canSubmitToWorkflow still not available if not override on actual table. But there is an alternate on which i have recently and its working perfectly on client side.
Please have look this blog and mark this answer as suggested if this will work for you.
community.dynamics.com/.../avoid-over-layering-in-development-of-workflows-on-existing-form
d365technext.blogspot.com/.../avoid-over-layering-in-development-of.html
Can you just explain what references you have put on each model.
I seem to get an issue when executing the page, when the code reaches the NEXT statement i get an error : "Object reference not set to an instance of an object." as if it cant find the code on the other overlay model. (PU12 / with Fall Update of D365FO)
Any ideas ?
Mesut,
Thanks for sharing your observation.
Yet again, it wasn't possible without Overlayering.
Hi Hafiz,
I have spent 3 days to solve that problem. I have setup worfklow on InventTransferORder form so I do every pre-requirements( Workflow category, approvalis, tasks, workflow types, menuITems ettc.)at backround without no problem.
However I could not override CansubmitToWorkflow method and so I could not activate my workflow.
What I have done to achieve that problem: (no way without overlayering)
[ExtensionOf(tableStr(InventTransfeTable))]
final class InventTransfeTable_Coc_Extension
{
public boolean canSubmitToWorkflow()
{
boolean ret;
ret = next canSubmitToWorkflow();
if(this.recID && this.WorkflowState == WorkflowState::notSubmitted && this.existLine())
{
ret = true;
}
return ret;
}
}
5. than it works fine and workflow button displayed on form.
David, How can cansubmitToWorkflow method go on form? It always is a table method.
Even if I consider its a form method, how would you place it on List Page?
Hi Hafiz,
You have trying create a chain of command of a method that doesn't exist in the table. This method is a form method.
You need the following:
[ExtensionOf(formStr(SalesTable))]
final class SalesTable_PWTesting_Form_Extension
{
public boolean canSubmitToWorkflow(str _workflowType)
{
boolean ret;
ret = next canSubmitToWorkflow(_workflowType);
return ret;
}
}
Regards.
Sukrut, Simple method overriding won't work as I can't call super this way.
David, I tried using Chain of Command, but it is giving this syntax error when i try to call canSubmitToWorkflow:
The next method cannot be invoked in method 'canSubmitToWorkflow' because it's not a Chain Of Command Method.
Below is the code of my class:
[ExtensionOf(tableStr(SalesTable))]
final class SLDSalesOrder_Extension
{
public boolean canSubmitToWorkflow(str _workflowType)
{
boolean ret;
ret = next canSubmitToWorkflow(_workflowType);
return ret;
}
}
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