Append for useAssistant about ai

[lgrammel]

Available in v3.0.25

[lgrammel]

@AlexIsMaking thanks for letting me know. it seems i dropped it by accident during the change

[brian-yates]

Hello - I have a question and possible bug regarding the append function in the useAssistant hook. It seems that calling append will add a message to the messages property (e.g. setMessages(prev => [...prev, newMessage])), but it calls the API endpoint with whatever the current input value is, regardless of what you called append with.

I would expect that calling append would call the API with the respective appended message content.

For additional context, I am adding prompts to the chat form that a user can click which would automatically send a message with the prompt content, rather than having to manually type out the message...and it seems like append is the perfect method to do this...it just doesn't work like I would expect.

Is this a bug or is it expected behavior?

Edit: this seems to be fixed...just had to upgrade to ai version 3.1.0

[lgrammel]

#1407

[AlexIsMaking]

@lgrammel really grateful for the quick implementation here. When I use append, the status helper variable isn't set to in_progress though, is that expected behaviour?

At the moment, I'm relying on that status changing to trigger storage of user & assistant messages, since useAssistant doesn't have useChat's onFinish callback option.

[lgrammel]

#1423

[saintpepsicola]

Thanks. I just ran into the bug lol @brian-yates