topic Re: How to display a message to user from rule? in Alfresco Forum

How to display a message to user from rule?

upforsin — Mon, 21 Sep 2020 11:25:56 GMT

Hello

Is there a way to show a user the output of the rule?

Let's say the rule checks content data on file upload and deletes it when it doesn't meet the criteria. How to inform the user that his file was deleted because of the <custom rule's message>?

I know I can easily show popup by executing Alfresco.util.PopupManager.displayPrompt() but rules run on server-side Javascript which doesn't have this functionality.

Re: How to display a message to user from rule?

EddieMay — Tue, 22 Sep 2020 13:02:54 GMT

Hi @upforsin

I don't believe this is possible, because as you say, rules run on the server side, can run asyncronously, and have no return type, while Share runs client side - there seems to be no mechanism for reporting results between them .

HTH

Re: How to display a message to user from rule?

upforsin — Tue, 22 Sep 2020 15:27:48 GMT

Hi @EddieMay

I cannot do it directly but what if i.e. the rule would call a Share webscript which would then display a popup? Just loud thinking

Re: How to display a message to user from rule?

EddieMay — Tue, 22 Sep 2020 15:42:58 GMT

Hi @upforsin

I don't know is the honest answer. However, how would you know that the rule had completed if there is no return value & if the rule is run asyncronously?

Cheers,

Re: How to display a message to user from rule?

angelborroy — Tue, 22 Sep 2020 15:55:36 GMT

Share Web Scripts can't show pop ups, they are also server side code.

Re: How to display a message to user from rule?

upforsin — Sun, 27 Sep 2020 18:31:59 GMT

The rule might be implemented in Java, so before the function's end it should send the message to the frontend, like: "Hey Share, let's display a popup now".

I was counting on Share webscripts but @angelborroy proved me wrong.

For now, I am just throwing an AlfrescoRuntime exception with my custom message. It works but it doesn't seem like an elegant solution. I'll update this post when I figure something out. Thanks for the help @EddieMay @angelborroy .

Anyway, sending a message from backend to frontend.. it feels to me like it should be a basic task