Formik: Masked inputs

Yup, you just treat it like any other custom input.

@jaredpalmer thanks. I've figured it out here. If anyone wanna see how I did it ( using react-text-mask):

      input = <Field name={name} render={({ field }) => {
        return <MaskedInput mask={Masks[mappedField.mask]}
            {...field}
            id={name}
            placeholder={mappedField.placeholder[language]} />
      }} />

@ThiagoMiranda how did you managed to validate masked string?
For example with this yup:

          passport: yup
            .string()
            .matches(/(^[0-9]+$)/, 'only digits here')
            .required('enter something')
            .min(4, 'Number of digits left: ' + digitsLeft)
            .max(4, 'This is too much')

i get value "0___" and cant validate for min max rules.

How come this doesnt work

I see the masked input and its masking and rendering good, but when im typing values.masked is not updating, even though i have a name on the Field.

Because Field passes a field prop, which MaskedInput doesn't correctly map to handlers.

Okey so field prop is not including all unknown props from Field

@yyynnn - I've hit the same issue. I ended up creating a custom change handler that strips the mask characters and manual calls Formik's setFieldValue.

handleChange = (event, field, form, charsToStrip) => {
  const cleanValue = stripCharacters(event.target.value, charsToStrip)
  form.setFieldValue(field.name, cleanValue)
}

function stripCharacters (string, characters) {
  const re = new RegExp(`[${characters}]+`, 'g')
  return string.replace(re, '')
}

@ThiagoMiranda how did you managed to validate masked string?
...
i get value "0___" and cant validate for min max rules.

pls see for another example https://codesandbox.io/s/4rkyylp24w

@jaredpalmer thanks. I've figured it out here. If anyone wanna see how I did it ( using react-text-mask):

this work for me too
<Field name='telefone' > {({ field }) => ( <MaskedInput mask={['(', /[1-9]/, /\d/, /\d/, ')', ' ', /\d/, /\d/, /\d/, '-', /\d/, /\d/, /\d/, /\d/]} {...field} placeholder='Telefone' className="form-control" /> )} </Field>