How to validate use entered phone number using slots in botpress? - botpress

Question

I am experimenting on botpress slots . There is the new option called as slot which will validate the user input . However I am not able to find resources which will validate the user input.
The bot must validate the use input as a phone number using slot feature or any other without use of external api ?
Is this possible ?
for example:
If the user inputs a valide phone number the flow will proceed.
else if use enters invalid phone number the flow will ask to re enter a valid phone number.
I have tried multiple things but had no luck finding the proper documentation/ tutorial regarding it.

Answer 1

I think you can use a custom action to achieve this. A custom action for validating mobile number may look like:
const baseMessage = {
type: 'text',
markdown: false
}
/**
* check if phone number is valid
* #title validate phone number
* #category Validation
* #author Your name
* #param {string} phone - phone number
*/
const validateNumber = async phone => {
var phoneRegex = /^\d{10}$/
if (phone.match(phoneRegex)) {
temp.phone_validation = 'success'
} else {
temp.phone_validation = 'error'
}
}
return validateNumber(args.phone)
You can call the custom action in your validation flow and redirect user accordingly