Displaying the toast on an Opportunity when another record is created

[energidi]

Rahul Hi,
First of all, I want to thank you for this great component!

I have a scenario that doesn't trigger the toast.
My use case:
I want to display a toast message to my users based on an exception they receive.
For example, a user tries to update an Opportunity, but the update (process) fails due to a validation rule.
Usually, the (red) exceptions at the button do not provide meaningful information, so I'm trying to display in the toast something more useful for the end-user.
I have an application that creates records every time an exception happens.
What I'm trying to do is as follows:

1. A user performs an action
2. An exception is thrown
3. A new exception custom object record is created
4. A triggered flow is triggered and creates the toast platform event
5. The toast LWC component on the Opportunity Lightning Record Page that is subscribed to the Platform Event is triggered and displays the message to the user on the opportunity.

I tried it out but it doesn't work.
It is working when the platform event is created based on the opportunity update, but not when a different object record is created.

Thanks again!
Gidi

[rahulmalhotra]

Hi Gidi, as per your use case, I recommend a few things to check:

1. You're saying that an exception is thrown: Can you confirm once that the exception record is created successfully? The reason I am asking this is because if an exception is thrown, it's possible that the exception record is also rolled back if it's not created in a separate transaction.
2. As the toast component is present on the opportunity record page, can you check if the parameter RecordId__c is populated in the flow? If yes, it should be populated with the related opportunity id and not the exception record id. If no, it's fine.

Can you check the above and let me know if the issue is still there?

[energidi]

Hi Rahul,

1. Yes, the record is created and not rolled out.
2. I even tried to hardcode the Opportunity ID in the flow, but it didn't work either. I thought it would also work without the ID since we are using the Key__c field that should trigger the LWC component subscribed to the Platform event.

Since the update doesn't succeed (because of the exception), do you think that the toast does not work since the page isn't refreshed?

[rahulmalhotra]

Yes, it should work without the id as well. Are you testing this with system admin? If not, does the user possess permission on the ToastEvent__e object?

It should work even if the page is not refreshed. Can you share some more details or maybe screenshots? Did you see any error on the browser console?

[energidi]

I tested it with my Admin user, so I don't think it's a permission issue.
I also added an email action after the platform event is created and I received the email, so I believe that the platform event was created. I didn't get any errors.
Here's a screenshot of the Record-Triggered create element: https://www.screencast.com/t/mKsy0uXc50P7
Here's a screenshot of the Platform Event Toast settings: https://www.screencast.com/t/8J9AFnXge

[rahulmalhotra]

Thank you for sharing the screenshots Gidi, it looks fine. If the platform event is firing, looks like the issue is on the detail page. Ideally, there should be a log printed like: Subscribed to Platform Event Toast when the page is initially loaded, can you check that once?

Also, can you try it once in system mode by checking the Run in System Mode checkbox and confirm if it works?

[energidi]

Where can I see the log you've mentioned?
I already tried running it in system mode.

[rahulmalhotra]

You can see it in browser console. Right click -> Inspect -> Click on Console tab

[energidi]

Thank you, Rahul, for the instructions.
The 'Subscribed to Platform Event toast' message appears in the log.

But, there is no toast pop-up.

[energidi]

I think that I'll try to replicate the scenario in my own developer environment to see if it's working or not.

[rahulmalhotra]

Yes, I don't see any issue here. If that still doesn't work, we can probably connect!

[energidi]

Many thanks, Rahul!

[energidi]

Rahul Hi,
I've tested it in another environment.
It seems to be working fine.
Not sure what is preventing it from working in my work environment, though.

[rahulmalhotra]

Hi Gidi, thank you for the update. Looks like platform events are not firing in the work environment or maybe a permission issue. Can you check once if platform events are fired? Maybe you can have a separate flow/process builder which is running only when the toast platform event is fired and that flow can do some update.

[energidi]

Rahul Hi,
I've created another flow that is subscribed to the 'Toast Event' Platform Event.
The flow sends an email when the PA is firing.
I received the email, so the PA is definitely firing.
Still, the toast does not appear.

[rahulmalhotra]

Can you drop a message on our telegram group. We may connect for 5-10 mins probably over the weekend and resolve it.

[energidi]

Great, thanks!
I wrote to you there.

[rahulmalhotra]

Hi Gidi, I am closing this issue as we discussed it and it's resolved now, feel free to reopen it or create a new one in case you face any problem. Thanks!