Feature request: Allow values to be booleans

[mgd722]

Is your feature request related to a problem? Please describe.
This is a fairly common scenario:

new ChoiceOption({
    label: 'yes',
    value: true
}),
new ChoiceOption({
    label: 'no',
    value: false
})

I have a yes/no question and I would like the answer to be a boolean so that I don't need to coerce it to a boolean later. Currently, doing this results in this error:

[Vue warn]: Invalid prop: type check failed for prop "value". Expected String, Array, got Boolean with value true.

Because of the way the value prop is configured in Question.vue..

Describe the solution you'd like
Allow booleans to be accepted as values.

Describe alternatives you've considered
let booleanAnswer = question.answer === 'true' ? true : false

[mgd722]

Number would also make a lot of sense.

How many pets do you have?

• One <value:1>
• Two <value:2>
• Three <value:3>

This would be way more graceful than having to coerce string values to Number after the fact.

[EkaterinaVu]

Support for Boolean to be accepted as value for prop "value" has been implemented.

[mgd722]

I'm not sure this 100% fixed it. This works ONLY for the true value:

new ChoiceOption({
	label: 'yes',
	value: true
}),
new ChoiceOption({
	label: 'no',
	value: false
})

so if you have a series of questions all the 'yes' answers evaluate to true, but all the 'no' answers still evaluate to 'no'. Am I missing something?

[mgd722]

Same problem happens if I use 1 and 0 instead of true and false-- the 1s evaluate, but 0, being a falsy value, returns the string of the label instead.

[mgd722]

The choiceValue method of the ChoiceOption class still does not allow falsy values.

[mgd722]

I have a PR to actually fix this, but I want to make sure it gets tested before it makes it into the mainstream.