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    • December 5, 2016 at 3:47 am #7613
      stham
      Member

      Hi there,

      I am trying to add my own custom validation rules (using piklist_validation_rules filter) to validate that an option selected (whether checkboxes, radio or select fields) is a valid one from the choices available.

      Based on the docs, there are 3 parameters in the callback – $value, $field, $arguments. $field returns the chosen option. However, no matter what I choose or not choose, $value always seems to pass an int 0 and $arguments always seems to be an empty array.

      My question is, what are those two parameters ($value and $arguments) supposed to represent?

      I have code for this that I’ve used with earlier versions of Piklist and it worked beautifully up until 0.9.4.31. I (finally) upgraded to v0.9.9.9 and it doesn’t work anymore. I don’t have any of the in-between versions.

      Here’s what I used to use:

      function smm_validate_single_choice( $value, $field ) {

	if ( is_array( $value ) ) {
		$value = $value[0];
	}
	return ( array_key_exists( (string) $value, $field['choices'] ) ) ? true : __( 'does not have a valid selection.', 'smm' );

}

      Any help is greatly appreciated. Thank you very much!

    • December 6, 2016 at 3:41 am #7614
      stham
      Member

      Solved it! But I’ll explain here in case it might help someone else out. I basically referred to the validate_email function in class-piklist-validate.php (line 992) to do it.

      There are 5 parameters, not 3 – $index, $value, $options, $field, $fields. Based on the documentation, these parameters are:

      @param int $index The field index being checked.
@param mixed $value The value of the field.
@param array $options The options.
@param array $field The field object.
@param array $fields Collection of fields.

      So my code now looks like this:

      function smm_validate_single_choice( $index, $value, $options, $field, $fields ) {

	if ( is_array( $value ) ) {
		$value = $value[0];
	}
	return ( array_key_exists( (string) $value, $field['choices'] ) ) ? true : __( 'does not have a valid selection.', 'smm' );

}
    • December 9, 2016 at 12:48 am #7631
      Steve
      Keymaster

      Docs updated: https://piklist.com/learn/doc/piklist_validation_rules/

      Thanks!

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