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<?php
/**
* Plugin public functions.
*
* @package Meta Box
*/
if ( ! function_exists( 'rwmb_meta' ) ) {
/**
* Get post meta.
*
* @param string $key Meta key. Required.
* @param array $args Array of arguments. Optional.
* @param int|null $post_id Post ID. null for current post. Optional.
*
* @return mixed
*/
function rwmb_meta( $key, $args = array(), $post_id = null ) {
$args = wp_parse_args( $args );
$field = rwmb_get_field_data( $key, $args, $post_id );
/*
* If field is not found, which can caused by registering meta boxes for the backend only or conditional registration.
* Then fallback to the old method to retrieve meta (which uses get_post_meta() as the latest fallback).
*/
if ( false === $field ) {
return apply_filters( 'rwmb_meta', rwmb_meta_legacy( $key, $args, $post_id ) );
}
$meta = in_array( $field['type'], array( 'oembed', 'map' ), true ) ?
rwmb_the_value( $key, $args, $post_id, false ) :
rwmb_get_value( $key, $args, $post_id );
return apply_filters( 'rwmb_meta', $meta, $key, $args, $post_id );
}
}
if ( ! function_exists( 'rwmb_get_field_data' ) ) {
/**
* Get field data.
*
* @param string $key Meta key. Required.
* @param array $args Array of arguments. Optional.
* @param int|null $object_id Object ID. null for current post. Optional.
*
* @return array
*/
function rwmb_get_field_data( $key, $args = array(), $object_id = null ) {
$args = wp_parse_args( $args, array(
'object_type' => 'post',
) );
$type = get_post_type( $object_id );
/**
* Filter meta type from object type and object id.
*
* @var string Meta type, default is post type name.
* @var string Object type.
* @var string|int Object id.
*/
$type = apply_filters( 'rwmb_meta_type', $type, $args['object_type'], $object_id );
return rwmb_get_registry( 'field' )->get( $key, $type, $args['object_type'] );
}
}
if ( ! function_exists( 'rwmb_meta_legacy' ) ) {
/**
* Get post meta.
*
* @param string $key Meta key. Required.
* @param array $args Array of arguments. Optional.
* @param int|null $post_id Post ID. null for current post. Optional.
*
* @return mixed
*/
function rwmb_meta_legacy( $key, $args = array(), $post_id = null ) {
$args = wp_parse_args( $args, array(
'type' => 'text',
'multiple' => false,
'clone' => false,
) );
$field = array(
'id' => $key,
'type' => $args['type'],
'clone' => $args['clone'],
'multiple' => $args['multiple'],
);
$method = 'get_value';
switch ( $args['type'] ) {
case 'taxonomy':
case 'taxonomy_advanced':
$field['taxonomy'] = $args['taxonomy'];
break;
case 'map':
case 'oembed':
$method = 'the_value';
break;
}
$field = RWMB_Field::call( 'normalize', $field );
return RWMB_Field::call( $method, $field, $args, $post_id );
}
} // End if().
if ( ! function_exists( 'rwmb_get_value' ) ) {
/**
* Get value of custom field.
* This is used to replace old version of rwmb_meta key.
*
* @param string $field_id Field ID. Required.
* @param array $args Additional arguments. Rarely used. See specific fields for details.
* @param int|null $post_id Post ID. null for current post. Optional.
*
* @return mixed false if field doesn't exist. Field value otherwise.
*/
function rwmb_get_value( $field_id, $args = array(), $post_id = null ) {
$args = wp_parse_args( $args );
$field = rwmb_get_field_data( $field_id, $args, $post_id );
// Get field value.
$value = $field ? RWMB_Field::call( 'get_value', $field, $args, $post_id ) : false;
/*
* Allow developers to change the returned value of field.
* For version < 4.8.2, the filter name was 'rwmb_get_field'.
*
* @param mixed $value Field value.
* @param array $field Field parameters.
* @param array $args Additional arguments. Rarely used. See specific fields for details.
* @param int|null $post_id Post ID. null for current post. Optional.
*/
$value = apply_filters( 'rwmb_get_value', $value, $field, $args, $post_id );
return $value;
}
}
if ( ! function_exists( 'rwmb_the_value' ) ) {
/**
* Display the value of a field
*
* @param string $field_id Field ID. Required.
* @param array $args Additional arguments. Rarely used. See specific fields for details.
* @param int|null $post_id Post ID. null for current post. Optional.
* @param bool $echo Display field meta value? Default `true` which works in almost all cases. We use `false` for the [rwmb_meta] shortcode.
*
* @return string
*/
function rwmb_the_value( $field_id, $args = array(), $post_id = null, $echo = true ) {
$args = wp_parse_args( $args );
$field = rwmb_get_field_data( $field_id, $args, $post_id );
if ( ! $field ) {
return '';
}
$output = RWMB_Field::call( 'the_value', $field, $args, $post_id );
/*
* Allow developers to change the returned value of field.
* For version < 4.8.2, the filter name was 'rwmb_get_field'.
*
* @param mixed $value Field HTML output.
* @param array $field Field parameters.
* @param array $args Additional arguments. Rarely used. See specific fields for details.
* @param int|null $post_id Post ID. null for current post. Optional.
*/
$output = apply_filters( 'rwmb_the_value', $output, $field, $args, $post_id );
if ( $echo ) {
echo $output; // WPCS: XSS OK.
}
return $output;
}
} // End if().
if ( ! function_exists( 'rwmb_meta_shortcode' ) ) {
/**
* Shortcode to display meta value.
*
* @param array $atts Shortcode attributes, same as rwmb_meta() function, but has more "meta_key" parameter.
*
* @return string
*/
function rwmb_meta_shortcode( $atts ) {
$atts = wp_parse_args( $atts, array(
'post_id' => get_the_ID(),
) );
if ( empty( $atts['meta_key'] ) ) {
return '';
}
$field_id = $atts['meta_key'];
$post_id = $atts['post_id'];
unset( $atts['meta_key'], $atts['post_id'] );
return rwmb_the_value( $field_id, $atts, $post_id, false );
}
add_shortcode( 'rwmb_meta', 'rwmb_meta_shortcode' );
}
if ( ! function_exists( 'rwmb_get_registry' ) ) {
/**
* Get the registry by type.
* Always return the same instance of the registry.
*
* @param string $type Registry type.
*
* @return object
*/
function rwmb_get_registry( $type ) {
static $data = array();
$type = str_replace( array( '-', '_' ), ' ', $type );
$class = 'RWMB_' . ucwords( $type ) . '_Registry';
$class = str_replace( ' ', '_', $class );
if ( ! isset( $data[ $type ] ) ) {
$data[ $type ] = new $class();
}
return $data[ $type ];
}
}
if ( ! function_exists( 'rwmb_get_storage_class_name' ) ) {
/**
* Get storage class name.
*
* @param string $object_type Object type. Use post or term.
* @return string
*/
function rwmb_get_storage_class_name( $object_type ) {
$object_type = str_replace( array( '-', '_' ), ' ', $object_type );
$object_type = ucwords( $object_type );
$object_type = str_replace( ' ', '_', $object_type );
$class_name = 'RWMB_' . $object_type . '_Storage';
if ( ! class_exists( $class_name ) ) {
$class_name = 'RWMB_Post_Storage';
}
return apply_filters( 'rwmb_storage_class_name', $class_name, $object_type );
}
}
if ( ! function_exists( 'rwmb_get_storage' ) ) {
/**
* Get storage instance.
*
* @param string $object_type Object type. Use post or term.
* @param RW_Meta_Box $meta_box Meta box object. Optional.
* @return RWMB_Storage_Interface
*/
function rwmb_get_storage( $object_type, $meta_box = null ) {
$class_name = rwmb_get_storage_class_name( $object_type );
$storage = rwmb_get_registry( 'storage' )->get( $class_name );
return apply_filters( 'rwmb_get_storage', $storage, $object_type, $meta_box );
}
}
if ( ! function_exists( 'rwmb_get_meta_box' ) ) {
/**
* Get meta box object from meta box data.
*
* @param array $meta_box Array of meta box data.
* @return RW_Meta_Box
*/
function rwmb_get_meta_box( $meta_box ) {
/**
* Allow filter meta box class name.
*
* @var string Meta box class name.
* @var array Meta box data.
*/
$class_name = apply_filters( 'rwmb_meta_box_class_name', 'RW_Meta_Box', $meta_box );
return new $class_name( $meta_box );
}
}
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