How to hook Luis into a Bot Framework FormDialog
I have a Dialog class which is a FormDialog (say, FormDialog< SandwichOrder>; one which builds an order for a sandwich, as per the bot framework documentation website). The SandwichOrder includes a "Price" property.
I also have a Dialog class which derives from LuisDialog which gets the price (based on, say, the size and/or province).
How can I hook Luis functionality into a Form Dialog?
Currently it is not possible to call a Dialog in a form field step. But you can have your custom implementation of IRecognize for a Field in the form (in this case "Price") and in the IEnumerable<TermMatch> Matches(string input, object defaultValue = null) implementation call into your Luis model and return all the possible TermMatches based on the detected entities by Luis.
This post: Custom fields with FormBuilder in the Microsoft Bot Framework appears to suggest an answer, and a way to implement your own custom field which implements IRecognizer. I haven't gotten it to work yet though.
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