# formidable/6.35/classes/models/fields/FrmFieldCheckbox.php

Formidable Forms – WordPress Form Builder for Contact Forms, Calculators, Quizzes & More, version 6.35. 134 lines.

- Page: https://pluginprobe.com/plugins/formidable/6.35/code/classes/models/fields/FrmFieldCheckbox.php
- Raw: https://pluginprobe.com/plugins/formidable/6.35/raw/classes/models/fields/FrmFieldCheckbox.php
- Modified: 2026-06-16T17:36:26+00:00

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```php
<?php
if ( ! defined( 'ABSPATH' ) ) {
	die( 'You are not allowed to call this page directly.' );
}

/**
 * @since 3.0
 */
class FrmFieldCheckbox extends FrmFieldType {

	/**
	 * @var string
	 *
	 * @since 3.0
	 */
	protected $type = 'checkbox';

	/**
	 * @var bool
	 *
	 * @since 3.0
	 */
	protected $holds_email_values = true;

	/**
	 * Does the html for this field label need to include "for"?
	 *
	 * @var bool
	 *
	 * @since 3.06.01
	 */
	protected $has_for_label = false;

	/**
	 * @return string
	 */
	protected function input_html() {
		return $this->multiple_input_html();
	}

	protected function include_form_builder_file() {
		return $this->include_front_form_file();
	}

	/**
	 * @return bool[]
	 */
	protected function field_settings_for_type() {
		return array(
			'invalid' => true,
		);
	}

	/**
	 * @return string[]
	 */
	protected function new_field_settings() {
		return array(
			'options' => serialize(
				array(
					__( 'Option 1', 'formidable' ),
					__( 'Option 2', 'formidable' ),
				)
			),
		);
	}

	/**
	 * Get the type of field being displayed.
	 *
	 * @since 4.02.01
	 *
	 * @param array|object $field
	 *
	 * @return array
	 */
	public function displayed_field_type( $field ) {
		return array(
			$this->type => true,
		);
	}

	/**
	 * @return array
	 */
	protected function extra_field_opts() {
		return array(
			'align' => '',
		);
	}

	/**
	 * @since 4.06
	 *
	 * @param array $args
	 *
	 * @return void
	 */
	protected function show_priority_field_choices( $args = array() ) {
		include FrmAppHelper::plugin_path() . '/classes/views/frm-fields/back-end/radio-images.php';
	}

	/**
	 * @return string
	 */
	protected function include_front_form_file() {
		return FrmAppHelper::plugin_path() . '/classes/views/frm-fields/front-end/checkbox-field.php';
	}

	/**
	 * @return bool
	 */
	protected function show_readonly_hidden() {
		return true;
	}

	protected function prepare_import_value( $value, $atts ) {
		return $this->get_multi_opts_for_import( $value );
	}

	/**
	 * Unset aria-invalid for checkboxes because it's not valid for checkboxes.
	 * Instead aria-invalid is added to the checkbox group parent element.
	 *
	 * @since 6.25
	 *
	 * @param array $shortcode_atts
	 * @param array $args
	 */
	public function set_aria_invalid_error( &$shortcode_atts, $args ) {
		unset( $shortcode_atts['aria-invalid'] );
	}
}

```