Changeset 52316 for trunk/src/wp-includes/block-template.php

Timestamp:

12/03/2021 07:37:32 PM (5 years ago)

Author:

hellofromTonya

Message:

Editor: Resolve template request ?_wp-find-template=true for new posts and pages.

The template resolution system makes a request like /?page_id=1234&_wp-find-template=true, depending on WP_Query to resolve a page or post using the page_id or p (post_id) in the query string. With new posts/pages, a placeholder post with the status auto-draft is created. But by default WP_Query will not resolve these posts, unless the query is specifically set to look for them.

This commit handles the query string to properly resolve a page or post. It adds 2 private callbacks for the processing.

Props poena, noisysocks, bernhard-reiter, costdev, hellofromTonya.
Fixes #54553.

File:

• trunk/src/wp-includes/block-template.php (modified) (2 diffs)

trunk/src/wp-includes/block-template.php

@@ -5 +5 @@
  * @package WordPress
  */
+
+/**
+ * Adds necessary filters to use 'wp_template' posts instead of theme template files.
+ *
+ * @access private
+ * @since 5.9.0
+ */
+function _add_template_loader_filters() {
+        if ( ! current_theme_supports( 'block-templates' ) ) {
+                return;
+        }
+
+        $template_types = array_keys( get_default_block_template_types() );
+        foreach ( $template_types as $template_type ) {
+                // Skip 'embed' for now because it is not a regular template type.
+                if ( 'embed' === $template_type ) {
+                        continue;
+                }
+                add_filter( str_replace( '-', '', $template_type ) . '_template', 'locate_block_template', 20, 3 );
+        }
+
+        // Request to resolve a template.
+        if ( isset( $_GET['_wp-find-template'] ) ) {
+                add_filter( 'pre_get_posts', '_resolve_template_for_new_post' );
+        }
+}
 
 /**
@@ -267 +293 @@
         return $context;
 }
+
+/**
+ * Sets the current WP_Query to return auto-draft posts.
+ *
+ * The auto-draft status indicates a new post, so allow the the WP_Query instance to
+ * return an auto-draft post for template resolution when editing a new post.
+ *
+ * @access private
+ * @since 5.9.0
+ *
+ * @param WP_Query $wp_query Current WP_Query instance, passed by reference.
+ */
+function _resolve_template_for_new_post( $wp_query ) {
+        remove_filter( 'pre_get_posts', '_resolve_template_for_new_post' );
+
+        // Pages.
+        $page_id = isset( $wp_query->query['page_id'] ) ? $wp_query->query['page_id'] : null;
+
+        // Posts, including custom post types.
+        $p = isset( $wp_query->query['p'] ) ? $wp_query->query['p'] : null;
+
+        $post_id = $page_id ? $page_id : $p;
+        $post    = get_post( $post_id );
+
+        if (
+                $post &&
+                'auto-draft' === $post->post_status &&
+                current_user_can( 'edit_post', $post->ID )
+        ) {
+                $wp_query->set( 'post_status', 'auto-draft' );
+        }
+}