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Customize: Refactor logic for updating custom_css posts by introducing wp_update_custom_css_post() function and renaming update filter.

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* Moves logic from `WP_Customize_Custom_CSS_Setting::update()` into a re-usable `wp_update_custom_css_post()` function, useful for future REST API endpoint, WP-CLI command, or plugin migrations.
* Renames `customize_update_custom_css_post_content_args` filter to `update_custom_css_data` and improves the naming of the parameters. Instead of passing `post_content` and `post_content_filtered` the filtered array now contains `css` and `preprocessed` respectively. 
* The second context param for the `update_custom_css_data` filter is now an array of the original args passed to `wp_update_custom_css_post()` and there is now no more `$setting` arg since it isn't necessarily being called in the customizer context.

Props westonruter, georgestephanis.
See #35395.
Fixes #38672.


git-svn-id: https://develop.svn.wordpress.org/trunk@39350 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Weston Ruter
2016-11-23 17:33:21 +00:00
parent 5d7118d63e
commit 8bcbe1a35c
3 changed files with 132 additions and 70 deletions
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87
src/wp-includes/theme.php
View File

@@ -1707,6 +1707,93 @@ function wp_get_custom_css( $stylesheet = '' ) {
return $css;
}
/**
* Update the `custom_css` post for a given theme.
*
* Inserts a `custom_css` post when one doesn't yet exist.
*
* @since 4.7.0
* @access public
*
* @param string $css CSS, stored in `post_content`.
* @param array $args {
* Args.
*
* @type string $preprocessed Pre-processed CSS, stored in `post_content_filtered`. Normally empty string. Optional.
* @type string $stylesheet Stylesheet (child theme) to update. Optional, defaults to current theme/stylesheet.
* }
* @return WP_Post|WP_Error Post on success, error on failure.
*/
function wp_update_custom_css_post( $css, $args = array() ) {
$args = wp_parse_args( $args, array(
'preprocessed' => '',
'stylesheet' => get_stylesheet(),
) );
$data = array(
'css' => $css,
'preprocessed' => $args['preprocessed'],
);
/**
* Filters the `css` (`post_content`) and `preprocessed` (`post_content_filtered`) args for a `custom_css` post being updated.
*
* This filter can be used by plugin that offer CSS pre-processors, to store the original
* pre-processed CSS in `post_content_filtered` and then store processed CSS in `post_content`.
* When used in this way, the `post_content_filtered` should be supplied as the setting value
* instead of `post_content` via a the `customize_value_custom_css` filter, for example:
*
* <code>
* add_filter( 'customize_value_custom_css', function( $value, $setting ) {
* $post = wp_get_custom_css_post( $setting->stylesheet );
* if ( $post && ! empty( $post->post_content_filtered ) ) {
* $css = $post->post_content_filtered;
* }
* return $css;
* }, 10, 2 );
* </code>
*
* @since 4.7.0
* @param array $data {
* Custom CSS data.
*
* @type string $css CSS stored in `post_content`.
* @type string $preprocessed Pre-processed CSS stored in `post_content_filtered`. Normally empty string.
* }
* @param array $args {
* The args passed into `wp_update_custom_css_post()` merged with defaults.
*
* @type string $css The original CSS passed in to be updated.
* @type string $preprocessed The original preprocessed CSS passed in to be updated.
* @type string $stylesheet The stylesheet (theme) being updated.
* }
*/
$data = apply_filters( 'update_custom_css_data', $data, array_merge( $args, compact( 'css' ) ) );
$post_data = array(
'post_title' => $args['stylesheet'],
'post_name' => sanitize_title( $args['stylesheet'] ),
'post_type' => 'custom_css',
'post_status' => 'publish',
'post_content' => $data['css'],
'post_content_filtered' => $data['preprocessed'],
);
// Update post if it already exists, otherwise create a new one.
$post = wp_get_custom_css_post( $args['stylesheet'] );
if ( $post ) {
$post_data['ID'] = $post->ID;
$r = wp_update_post( wp_slash( $post_data ), true );
} else {
$r = wp_insert_post( wp_slash( $post_data ), true );
}
if ( $r instanceof WP_Error ) {
return $r;
}
return get_post( $r );
}
/**
* Add callback for custom TinyMCE editor stylesheets.
*