Require All Columns of List Field

<?php

/**

* Require All Columns of List Field

* http://gravitywiz.com/2012/07/23/require-all-columns-of-list-field/

*/

class GWRequireListColumns {

    private $field_ids;

    function __construct($form_id = '', $field_ids = array()) {

        $this->field_ids = !is_array($field_ids) ? array($field_ids) : $field_ids;

        $form_filter = $form_id ? "_{$form_id}" : $form_id;

        add_filter("gform_validation{$form_filter}", array(&$this, 'require_list_columns'));

    }

    function require_list_columns($validation_result) {

        $form = $validation_result['form'];

        $new_validation_error = false;

        foreach($form['fields'] as &$field) {

            if(!$this->is_applicable_field($field, $form))

                continue;

            $values = rgpost("input_{$field['id']}");

            foreach($values as $value) {

                if(empty($value)) {

                    $new_validation_error = true;

                    $field['failed_validation'] = true;

                    $field['validation_message'] = $field['errorMessage'] ? $field['errorMessage'] : 'All inputs must be filled out.';

                }

            }

        }

        $validation_result['form'] = $form;

        $validation_result['is_valid'] = $new_validation_error ? false : $validation_result['is_valid'];

        return $validation_result;

    }

    function is_applicable_field($field, $form) {

        if($field['pageNumber'] != GFFormDisplay::get_source_page($form['id']))

            return false;

        if($field['type'] != 'list' || RGFormsModel::is_field_hidden($form, $field, array()))

            return false;

        // if the field has already failed validation, we don't need to fail it again

        if(!$field['isRequired'] || $field['failed_validation'])

            return false;

        if(empty($this->field_ids))

            return true;

        return in_array($field['id'], $this->field_ids);

    }

}

// Accepted Parameters

// new GWRequireListColumns($form_id, $field_ids);

// apply to all list fields on all forms

new GWRequireListColumns();

// apply to all list fields on a specific form

# new GWRequireListColumns(4);

// apply to specific list field on a specific form

# new GWRequireListColumns(4, 2);

// apply to specific list fields (plural) on a specific form

# new GWRequireListColumns(4, array(2,3));