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<?php
/*
* ACF Radio Button Field Class
*
* All the logic for this field type
*
* @class acf_field_radio
* @extends acf_field
* @package ACF
* @subpackage Fields
*/
if( ! class_exists('acf_field_radio') ) :
class acf_field_radio 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 = 'radio';
$this->label = __("Radio Button",'acf');
$this->category = 'choice';
$this->defaults = array(
'layout' => 'vertical',
'choices' => array(),
'default_value' => '',
'other_choice' => 0,
'save_other_choice' => 0,
'allow_null' => 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 ) {
// vars
$i = 0;
$e = '';
$ul = array(
'class' => 'acf-radio-list',
'data-allow_null' => $field['allow_null'],
'data-other_choice' => $field['other_choice']
);
// append to class
$ul['class'] .= ' ' . ($field['layout'] == 'horizontal' ? 'acf-hl' : 'acf-bl');
$ul['class'] .= ' ' . $field['class'];
// select value
$checked = '';
$value = strval($field['value']);
// selected choice
if( isset($field['choices'][ $value ]) ) {
$checked = $value;
// custom choice
} elseif( $field['other_choice'] && $value !== '' ) {
$checked = 'other';
// allow null
} elseif( $field['allow_null'] ) {
// do nothing
// select first input by default
} else {
$checked = key($field['choices']);
}
// ensure $checked is a string (could be an int)
$checked = strval($checked);
// other choice
if( $field['other_choice'] ) {
// vars
$input = array(
'type' => 'text',
'name' => $field['name'],
'value' => '',
'disabled' => 'disabled'
);
// select other choice if value is not a valid choice
if( $checked === 'other' ) {
unset($input['disabled']);
$input['value'] = $field['value'];
}
// append other choice
$field['choices']['other'] = '</label><input type="text" ' . acf_esc_attr($input) . ' /><label>';
}
// bail early if no choices
if( empty($field['choices']) ) return;
// hiden input
$e .= acf_get_hidden_input( array('name' => $field['name']) );
// open
$e .= '<ul ' . acf_esc_attr($ul) . '>';
// foreach choices
foreach( $field['choices'] as $value => $label ) {
// ensure value is a string
$value = strval($value);
$class = '';
// increase counter
$i++;
// vars
$atts = array(
'type' => 'radio',
'id' => $field['id'],
'name' => $field['name'],
'value' => $value
);
// checked
if( $value === $checked ) {
$atts['checked'] = 'checked';
$class = ' class="selected"';
}
// deisabled
if( isset($field['disabled']) && acf_in_array($value, $field['disabled']) ) {
$atts['disabled'] = 'disabled';
}
// id (use crounter for each input)
if( $i > 1 ) {
$atts['id'] .= '-' . $value;
}
// append
$e .= '<li><label' . $class . '><input ' . acf_esc_attr( $atts ) . '/>' . $label . '</label></li>';
}
// close
$e .= '</ul>';
// return
echo $e;
}
/*
* 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']);
// 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',
));
// allow_null
acf_render_field_setting( $field, array(
'label' => __('Allow Null?','acf'),
'instructions' => '',
'type' => 'radio',
'name' => 'allow_null',
'choices' => array(
1 => __("Yes",'acf'),
0 => __("No",'acf'),
),
'layout' => 'horizontal',
));
// other_choice
acf_render_field_setting( $field, array(
'label' => __('Other','acf'),
'instructions' => '',
'type' => 'true_false',
'name' => 'other_choice',
'message' => __("Add 'other' choice to allow for custom values", 'acf')
));
// save_other_choice
acf_render_field_setting( $field, array(
'label' => __('Save Other','acf'),
'instructions' => '',
'type' => 'true_false',
'name' => 'save_other_choice',
'message' => __("Save 'other' values to the field's choices", 'acf')
));
// default_value
acf_render_field_setting( $field, array(
'label' => __('Default Value','acf'),
'instructions' => __('Appears when creating a new post','acf'),
'type' => 'text',
'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')
)
));
}
/*
* 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']);
// 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
* @todo Fix bug where $field was found via json and has no ID
*
* @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, $field ) {
// bail early if no value (allow 0 to be saved)
if( !$value && !is_numeric($value) ) return $value;
// save_other_choice
if( $field['save_other_choice'] ) {
// value isn't in choices yet
if( !isset($field['choices'][ $value ]) ) {
// get raw $field (may have been changed via repeater field)
// if field is local, it won't have an ID
$selector = $field['ID'] ? $field['ID'] : $field['key'];
$field = acf_get_field( $selector, true );
// bail early if no ID (JSON only)
if( !$field['ID'] ) return $value;
// update $field
$field['choices'][ $value ] = $value;
// save
acf_update_field( $field );
}
}
// return
return $value;
}
/*
* load_value()
*
* This filter is appied to the $value after it is loaded from the db
*
* @type filter
* @since 5.2.9
* @date 23/01/13
*
* @param $value - the value found in the database
* @param $post_id - the $post_id from which the value was loaded from
* @param $field - the field array holding all the field options
*
* @return $value - the value to be saved in te database
*/
function load_value( $value, $post_id, $field ) {
// must be single value
if( is_array($value) ) {
$value = array_pop($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_radio();
endif;
?>