How to validate a field that is either string or array?

[galaczi]

I have a dynamic form where the user can submit one field or dynamically create more. How would I validate a field that is either a string or an array? Should I simply check the type of field and call a separate validator for each case?

[WeyIin]

What I would do is maybe iterate through the array and call the validator on that field with existing one..

[galaczi]

Hi Weylin, thanks for the idea.

What I have tried so far is expecting an array in the validator, and converting non-array values to an array before validating.

    const body = request.body()
    if(!Array.isArray(body.subject)) {
      body.subject = [body.subject]
      body.pricingMinutes = [body.pricingMinutes]
      body.pricingPrice = [body.pricingPrice]
      body.level = [body.level]
    }

Yet when I call request.validate, the array validation still fails. Any idea why?

[WeyIin]

I think when you do request.validate it is not getting the body you are trying to validate.

Maybe using request.updateBody(body) at the end would do the trick?

[galaczi]

It worked! Thank you!