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Options: Add 'default' to register_setting 

Add a `default` argument to `register_setting` that will be used an the default option value viet `get_option()` in the event of no other option being specified. This means (if chosen) developers can define their default once via `register_option` and not have to duplicate the value every time they make a call to `get_option()`.

Props rmccue, jorbin, jtsternberg.
Fixes #38176.

Built from https://develop.svn.wordpress.org/trunk@38910


git-svn-id: http://core.svn.wordpress.org/trunk@38853 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Joe Hoyle 2016-10-25 17:08:29 +00:00
parent 67dbadd476
commit 5f777155f2
2 changed files with 39 additions and 4 deletions
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41
wp-includes/option.php
View File

@ -56,6 +56,9 @@ function get_option( $option, $default = false ) {
if ( defined( 'WP_SETUP_CONFIG' ) )
return false;
// Distinguish between `false` as a default, and not passing one.
$passed_default = func_num_args() > 1;
if ( ! wp_installing() ) {
// prevent non-existent options from triggering multiple queries
$notoptions = wp_cache_get( 'notoptions', 'options' );
@ -67,12 +70,14 @@ function get_option( $option, $default = false ) {
*
* @since 3.4.0
* @since 4.4.0 The `$option` parameter was added.
* @since 4.7.0 The `$passed_default` parameter was added to distinguish between a `false` value and the default parameter value.
*
* @param mixed $default The default value to return if the option does not exist
* in the database.
* @param string $option Option name.
* @param bool $passed_default Was `get_option()` passed a default value?
*/
return apply_filters( "default_option_{$option}", $default, $option );
return apply_filters( "default_option_{$option}", $default, $option, $passed_default );
}
$alloptions = wp_load_alloptions();
@ -97,7 +102,7 @@ function get_option( $option, $default = false ) {
wp_cache_set( 'notoptions', $notoptions, 'options' );
/** This filter is documented in wp-includes/option.php */
return apply_filters( 'default_option_' . $option, $default, $option );
return apply_filters( 'default_option_' . $option, $default, $option, $passed_default );
}
}
}
@ -109,7 +114,7 @@ function get_option( $option, $default = false ) {
$value = $row->option_value;
} else {
/** This filter is documented in wp-includes/option.php */
return apply_filters( 'default_option_' . $option, $default, $option );
return apply_filters( 'default_option_' . $option, $default, $option, $passed_default );
}
}
@ -1835,6 +1840,7 @@ function register_initial_settings() {
* @type string $description A description of the data attached to this setting.
* @type callable $sanitize_callback A callback function that sanitizes the option's value.
* @type bool $show_in_rest Whether data associated with this setting should be included in the REST API.
* @type mixed $default Default value when calling `get_option()`.
* }
*/
function register_setting( $option_group, $option_name, $args = array() ) {
@ -1886,6 +1892,9 @@ function register_setting( $option_group, $option_name, $args = array() ) {
if ( ! empty( $args['sanitize_callback'] ) ) {
add_filter( "sanitize_option_{$option_name}", $args['sanitize_callback'] );
}
if ( array_key_exists( 'default', $args ) ) {
add_filter( "default_option_{$option_name}", 'filter_default_option', 10, 3 );
}
$wp_registered_settings[ $option_name ] = $args;
}
@ -1950,3 +1959,29 @@ function get_registered_settings() {
return $wp_registered_settings;
}
/**
* Filter the default value for the option.
*
* For settings which register a default setting in `register_setting()`, this
* function is added as a filter to `default_option_{$option}`.
*
* @since 4.7.0
*
* @param mixed $default Existing default value to return.
* @param string $option Option name.
* @param bool $passed_default Was `get_option()` passed a default value?
* @return mixed Filtered default value.
*/
function filter_default_option( $default, $option, $passed_default ) {
if ( $passed_default ) {
return $default;
}
$registered = get_registered_settings();
if ( empty( $registered[ $option ] ) ) {
return $default;
}
return $registered[ $option ]['default'];
}

2
wp-includes/version.php
View File

@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.7-alpha-38909';
$wp_version = '4.7-alpha-38910';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.