External triggers

[wochinge]

Proposed changes:

• fix Support for external triggers / asynchronous actions #3789
• add query param output_channel to execute endpoint

Status (please check what you already did):

• made PR ready for code review
• added some tests for the functionality
• updated the documentation
• updated the changelog
• reformat files using black (please check Readme for instructions)

[wochinge]

@erohmensing Should we add docs for it and if yes, where? I would add docs and probably somewhere to https://rasa.com/docs/rasa/user-guide/messaging-and-voice-channels/ ?

[erohmensing]

Definitely would add docs about this. Yeah i would just add them that page you linked -- I think we should add more high-level explanation of what input and output channels do on that page anyway.

However we should also have a header under Actions with a quick description and a link to the info in the channel docs since i think people would be likely to look for the info there

[wochinge]

@erohmensing Added some docs, could you check please?

[tabergma]

Great work! 🚀

[wochinge]

@erohmensing Do you have any more comments on the docs?

[amn41]

@wochinge very nice - looks like a clean solution. So does a user implement a single custom action for this proactive outreach? Can this be used for simple utteractions? Not super clear from the docs

[wochinge]

So does a user implement a single custom action for this proactive outreach? Can this be used for simple utteractions? Not super clear from the docs

They can trigger any action, so utter_* or some custom action action_*. If the response is not static, it's most probably a custom action. I added a bit more in the docs 👍

[wochinge]

@MetcalfeTom Do you have some input on the docs? (I believe Ella is busy testing 😄 )

[erohmensing]

@wochinge I edited a few small wordings and added some explanation, but overall was great 👍