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<?php
/*
* ACF Checkbox Field Class
*
* All the logic for this field type
*
* @class acf_field_checkbox
* @extends acf_field
* @package ACF
* @subpackage Fields
*/
if( ! class_exists('acf_field_checkbox') ) :
class acf_field_checkbox extends acf_field {
/*
* __construct
*
* This function will setup the field type data
*
* @type function
* @date 5/03/2014
* @since 5.0.0
*
* @param n/a
* @return n/a
*/
function __construct() {
// vars
$this->name = 'checkbox';
$this->label = __("Checkbox",'acf');
$this->category = 'choice';
$this->defaults = array(
'layout' => 'vertical',
'choices' => array(),
'default_value' => '',
'toggle' => 0
);
// do not delete!
parent::__construct();
}
/*
* render_field()
*
* Create the HTML interface for your field
*
* @param $field (array) the $field being rendered
*
* @type action
* @since 3.6
* @date 23/01/13
*
* @param $field (array) the $field being edited
* @return n/a
*/
function render_field( $field ) {
// decode value (convert to array)
$field['value'] = acf_get_array($field['value'], false);
// hiden input
acf_hidden_input( array('name' => $field['name']) );
// vars
$i = 0;
$li = '';
$all_checked = true;
// checkbox saves an array
$field['name'] .= '[]';
// foreach choices
if( !empty($field['choices']) ) {
foreach( $field['choices'] as $value => $label ) {
// increase counter
$i++;
// vars
$atts = array(
'type' => 'checkbox',
'id' => $field['id'],
'name' => $field['name'],
'value' => $value,
);
// is choice selected?
if( in_array($value, $field['value']) ) {
$atts['checked'] = 'checked';
} else {
$all_checked = false;
}
if( isset($field['disabled']) && acf_in_array($value, $field['disabled']) ) {
$atts['disabled'] = 'disabled';
}
// each input ID is generated with the $key, however, the first input must not use $key so that it matches the field's label for attribute
if( $i > 1 ) {
$atts['id'] .= '-' . $value;
}
// append HTML
$li .= '<li><label><input ' . acf_esc_attr( $atts ) . '/>' . $label . '</label></li>';
}
// toggle all
if( $field['toggle'] ) {
// vars
$label = __("Toggle All", 'acf');
$atts = array(
'type' => 'checkbox',
'class' => 'acf-checkbox-toggle'
);
// custom label
if( is_string($field['toggle']) ) {
$label = $field['toggle'];
}
// checked
if( $all_checked ) {
$atts['checked'] = 'checked';
}
// append HTML
$li = '<li><label><input ' . acf_esc_attr( $atts ) . '/>' . $label . '</label></li>' . $li;
}
}
// class
$field['class'] .= ' acf-checkbox-list';
$field['class'] .= ($field['layout'] == 'horizontal') ? ' acf-hl' : ' acf-bl';
// return
echo '<ul ' . acf_esc_attr(array( 'class' => $field['class'] )) . '>' . $li . '</ul>';
}
/*
* render_field_settings()
*
* Create extra options for your field. This is rendered when editing a field.
* The value of $field['name'] can be used (like bellow) to save extra data to the $field
*
* @type action
* @since 3.6
* @date 23/01/13
*
* @param $field - an array holding all the field's data
*/
function render_field_settings( $field ) {
// encode choices (convert from array)
$field['choices'] = acf_encode_choices($field['choices']);
$field['default_value'] = acf_encode_choices($field['default_value'], false);
// choices
acf_render_field_setting( $field, array(
'label' => __('Choices','acf'),
'instructions' => __('Enter each choice on a new line.','acf') . '<br /><br />' . __('For more control, you may specify both a value and label like this:','acf'). '<br /><br />' . __('red : Red','acf'),
'type' => 'textarea',
'name' => 'choices',
));
// default_value
acf_render_field_setting( $field, array(
'label' => __('Default Value','acf'),
'instructions' => __('Enter each default value on a new line','acf'),
'type' => 'textarea',
'name' => 'default_value',
));
// layout
acf_render_field_setting( $field, array(
'label' => __('Layout','acf'),
'instructions' => '',
'type' => 'radio',
'name' => 'layout',
'layout' => 'horizontal',
'choices' => array(
'vertical' => __("Vertical",'acf'),
'horizontal' => __("Horizontal",'acf')
)
));
// layout
acf_render_field_setting( $field, array(
'label' => __('Toggle','acf'),
'instructions' => __('Prepend an extra checkbox to toggle all choices','acf'),
'type' => 'radio',
'name' => 'toggle',
'layout' => 'horizontal',
'choices' => array(
1 => __("Yes",'acf'),
0 => __("No",'acf'),
)
));
}
/*
* update_field()
*
* This filter is appied to the $field before it is saved to the database
*
* @type filter
* @since 3.6
* @date 23/01/13
*
* @param $field - the field array holding all the field options
* @param $post_id - the field group ID (post_type = acf)
*
* @return $field - the modified field
*/
function update_field( $field ) {
// decode choices (convert to array)
$field['choices'] = acf_decode_choices($field['choices']);
$field['default_value'] = acf_decode_choices($field['default_value'], true);
// return
return $field;
}
/*
* update_value()
*
* This filter is appied to the $value before it is updated in the db
*
* @type filter
* @since 3.6
* @date 23/01/13
*
* @param $value - the value which will be saved in the database
* @param $post_id - the $post_id of which the value will be saved
* @param $field - the field array holding all the field options
*
* @return $value - the modified value
*/
function update_value( $value, $post_id, $field ) {
// validate
if( empty($value) ) {
return $value;
}
// array
if( is_array($value) ) {
// save value as strings, so we can clearly search for them in SQL LIKE statements
$value = array_map('strval', $value);
}
// return
return $value;
}
/*
* translate_field
*
* This function will translate field settings
*
* @type function
* @date 8/03/2016
* @since 5.3.2
*
* @param $field (array)
* @return $field
*/
function translate_field( $field ) {
// translate
$field['choices'] = acf_translate( $field['choices'] );
// return
return $field;
}
}
new acf_field_checkbox();
endif;
?>