let rasa interactive automatically do rasa interactive core when no nlu data

[erohmensing]

Proposed changes:

• interactive now follows the same logic as train does, by letting train decide what gets trained and loaded based on the data provided. (unless it is training a new model with rasa interactive core in which case it will only train a core model regardless of provided data)
• interactive training now explicitly does not run on or train nlu-only models. Before, it broke.
• fix rasa interactive does not work without nlu data #4799

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)

[erohmensing]

I guess there is really no rasa interactive nlu, what do you think it should do if only nlu data is loaded? 🤔

[wochinge]

Thanks for tackling this! We also need a changelog update and ideally a test

[erohmensing]

Changelog will wait until there's a proper bug branch open 😃Any suggestion on testing? It's hard with CLI stuff, as i don't think we currently test the actual functionality of loading + starting up the interactive server, it's just internal methods

[wochinge]

Nice, a lot of cleaning up as well 💯

• If no stories are present, then we should not train a NLU only model, cause this will also not help. Right?

• Can we remove lines 1621 to 1624 in training/interactive? I think that case can't happen.

• And tests would be great, at least for

  • no core data given
  • optional: if training function is called when no model is given

[tmbo]

@erohmensing what are the next steps on this one?

[erohmensing]

Sorry, just getting time to come around to it was the next step 😅

[tmbo]

no worries, just wanted to make sure it is still on your radar so we can make sure it doesn't get stale

[wochinge]

Great work with the testing! 🥇

• Can you please change it to use the RasaFileImporter
• please make sure to merge it in the right branch in case you don't get this done until Wednesday

[erohmensing]

Everything should be addressed 🙂 changed base to master

[wochinge]

not done, I think github is in a weird state 😀

[wochinge]

Let's discuss the comments, but otherwise good to go! Thanks for making this so much more robust!