Ticket #38672: 38672.wp_update_custom_css_post.3.diff

src/wp-includes/customize/class-wp-customize-custom-css-setting.php

@@ -245 +245 @@
          * @return int|false The post ID or false if the value could not be saved.
          */
         public function update( $css ) {
-                $setting = $this;
-
                 if ( empty( $css ) ) {
                         $css = '';
                 }
@@ -256 +254 @@
                         'post_content_filtered' => '',
                 );
 
-                /**
-                 * Filters the `post_content` and `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  $args {
-                 *     Content post args (unslashed) for `wp_update_post()`/`wp_insert_post()`.
-                 *
-                 *     @type string $post_content          CSS.
-                 *     @type string $post_content_filtered Pre-processed CSS. Normally empty string.
-                 * }
-                 * @param string                          $css     Original CSS being updated.
-                 * @param WP_Customize_Custom_CSS_Setting $setting Custom CSS Setting.
-                 */
-                $args = apply_filters( 'customize_update_custom_css_post_content_args', $args, $css, $setting );
-                $args = wp_array_slice_assoc( $args, array( 'post_content', 'post_content_filtered' ) );
-
-                $args = array_merge(
-                        $args,
-                        array(
-                                'post_title' => $this->stylesheet,
-                                'post_name' => sanitize_title( $this->stylesheet ),
-                                'post_type' => 'custom_css',
-                                'post_status' => 'publish',
-                        )
-                );
+                $args['stylesheet'] = $this->stylesheet;
+                $r = wp_update_custom_css_post( $css, $args );
 
-                // Update post if it already exists, otherwise create a new one.
-                $post = wp_get_custom_css_post( $this->stylesheet );
-                if ( $post ) {
-                        $args['ID'] = $post->ID;
-                        $post_id = wp_update_post( wp_slash( $args ) );
-                } else {
-                        $post_id = wp_insert_post( wp_slash( $args ) );
-                }
-                if ( ! $post_id ) {
+                if ( $r instanceof WP_Error ) {
                         return false;
                 }
+                $post_id = $r->ID;
 
                 // Cache post ID in theme mod for performance to avoid additional DB query.
                 if ( $this->manager->get_stylesheet() === $this->stylesheet ) {

src/wp-includes/theme.php

@@ -1708 +1708 @@
 }
 
 /**
+ * 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 string $stylesheet The stylesheet (theme) being updated.
+         */
+        $data = apply_filters( 'update_custom_css_data', $data, $args['stylesheet'] );
+
+        $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.
  *
  * The parameter $stylesheet is the name of the stylesheet, relative to

tests/phpunit/tests/customize/custom-css-setting.php

@@ -158 +158 @@
                 $this->assertEquals( $previewed_css, $this->setting->value() );
                 $this->assertEquals( $previewed_css, wp_get_custom_css( $this->setting->stylesheet ) );
 
+                // Make sure that wp_update_custom_css_post() works as expected for updates.
+                $r = wp_update_custom_css_post( 'body { color:red; }', array(
+                        'stylesheet' => $this->setting->stylesheet,
+                        'preprocessed' => "body\n\tcolor:red;",
+                ) );
+                $this->assertInstanceOf( 'WP_Post', $r );
+                $this->assertEquals( $post_id, $r->ID );
+                $r = wp_update_custom_css_post( 'body { content: "\o/"; }' );
+                $this->assertEquals( $this->wp_customize->get_stylesheet(), get_post( $r )->post_name );
+                $this->assertEquals( 'body { content: "\o/"; }', get_post( $r )->post_content );
+
+                // Make sure that wp_update_custom_css_post() works as expected for insertion.
+                $r = wp_update_custom_css_post( 'body { background:black; }', array(
+                        'stylesheet' => 'other',
+                ) );
+                $this->assertInstanceOf( 'WP_Post', $r );
+                $this->assertEquals( 'other', get_post( $r )->post_name );
+                $this->assertEquals( 'body { background:black; }', get_post( $r )->post_content );
+                $this->assertEquals( 'publish', get_post( $r )->post_status );
+
+                // Test deletion.
                 wp_delete_post( $post_id );
                 $this->assertNull( wp_get_custom_css_post() );
                 $this->assertNull( wp_get_custom_css_post( get_stylesheet() ) );
@@ -225 +246 @@
                 $post = get_post( $post_id );
                 $original_title = $post->post_title;
 
-                add_filter( 'customize_update_custom_css_post_content_args', array( $this, 'filter_update_post_content_args' ), 10, 3 );
+                add_filter( 'update_custom_css_data', array( $this, 'filter_update_custom_css_data' ), 10, 3 );
                 $this->setting->save();
 
                 $post = get_post( $post_id );
@@ -238 +259 @@
         /**
          * Filter `customize_update_custom_css_post_content_args`.
          *
-         * @param array                $args    Post array.
-         * @param string               $css     CSS.
-         * @param WP_Customize_Setting $setting Setting.
-         * @return array Args.
+         * @param array  $data       Data.
+         * @param string $stylesheet Stylesheet.
+         * @return array Data.
          */
-        function filter_update_post_content_args( $args, $css, $setting ) {
-                $this->assertInternalType( 'array', $args );
-                $this->assertEqualSets( array( 'post_content', 'post_content_filtered' ), array_keys( $args ) );
-                $this->assertEquals( $css, $args['post_content'] );
-                $this->assertEquals( '', $args['post_content_filtered'] );
-                $this->assertInstanceOf( 'WP_Customize_Custom_CSS_Setting', $setting );
-
-                $args['post_content'] .= '/* filtered post_content */';
-                $args['post_content_filtered'] = '/* filtered post_content_filtered */';
-                $args['post_title'] = 'Ignored';
-                return $args;
+        function filter_update_custom_css_data( $data, $stylesheet ) {
+                $this->assertInternalType( 'array', $data );
+                $this->assertEqualSets( array( 'css', 'preprocessed' ), array_keys( $data ) );
+                $this->assertEquals( '', $data['preprocessed'] );
+                $this->assertInternalType( 'string', $stylesheet );
+
+                $data['css'] .= '/* filtered post_content */';
+                $data['preprocessed'] = '/* filtered post_content_filtered */';
+                $data['post_title'] = 'Ignored';
+                return $data;
         }
 
         /**