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<title>[9503] sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc: Developer theme: Allow preview link for explanations to preview the explanation being edited within the context of its associated function/hook/method/class.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="http://meta.trac.wordpress.org/changeset/9503">9503</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"http://meta.trac.wordpress.org/changeset/9503","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>coffee2code</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-02-13 23:40:22 +0000 (Thu, 13 Feb 2020)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Developer theme: Allow preview link for explanations to preview the explanation being edited within the context of its associated function/hook/method/class.

Props valentinbora.
Fixes <a href="http://meta.trac.wordpress.org/ticket/5018">#5018</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentthemespubwporgdeveloperincexplanationsphp">sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/explanations.php</a></li>
<li><a href="#sitestrunkwordpressorgpublic_htmlwpcontentthemespubwporgdeveloperinctemplatetagsphp">sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/template-tags.php</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentthemespubwporgdeveloperincexplanationsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/explanations.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/explanations.php  2020-02-13 11:33:17 UTC (rev 9502)
+++ sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/explanations.php    2020-02-13 23:40:22 UTC (rev 9503)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -60,6 +60,8 @@
</span><span class="cx" style="display: block; padding: 0 10px">                // Output checkmark in explanations column if post has an explanation.
</span><span class="cx" style="display: block; padding: 0 10px">                add_action( 'manage_posts_custom_column', array( $this, 'handle_column_data'  ), 10, 2 );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                add_filter( 'preview_post_link',       array ( $this, 'preview_post_link'     ), 10, 2 );
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 // Permissions.
</span><span class="cx" style="display: block; padding: 0 10px">                add_action( 'after_switch_theme',      array( $this, 'add_roles'              )        );
</span><span class="cx" style="display: block; padding: 0 10px">                add_filter( 'user_has_cap',            array( $this, 'grant_caps'             )        );
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -92,6 +94,7 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                'not_found_in_trash'  => __( 'No Explanations found in trash', 'wporg' ),
</span><span class="cx" style="display: block; padding: 0 10px">                        ),
</span><span class="cx" style="display: block; padding: 0 10px">                        'public'            => false,
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        'publicly_queryable'=> true,
</ins><span class="cx" style="display: block; padding: 0 10px">                         'hierarchical'      => false,
</span><span class="cx" style="display: block; padding: 0 10px">                        'show_ui'           => true,
</span><span class="cx" style="display: block; padding: 0 10px">                        'show_in_menu'      => true,
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -118,6 +121,43 @@
</span><span class="cx" style="display: block; padding: 0 10px">        }
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">        /**
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         * Override preview post links for explanations to preview the explanation
+        * within the context of its associated function/hook/method/class.
+        *
+        * The associated post's preview link is amended with query parameters used
+        * by `get_explanation_content()` to use the explanation being previewed
+        * instead of the published explanation currently associated with the post.
+        *
+        * @access public
+        * @see 'preview_post_link' filter
+        *
+        * @param string  $preview_link URL used for the post preview.
+        * @param WP_Post $post         Post object.
+        * @return string
+        **/
+       public function preview_post_link( $preview_link, $post ) {
+               if ( $this->exp_post_type !== $post->post_type ) {
+                       return $preview_link;
+               }
+
+               if ( false !== strpos( $preview_link, 'preview_nonce=' ) ) {
+                       $url = parse_url( $preview_link );
+                       $url_query = array();
+                       parse_str ( $url['query'], $url_query );
+
+                       $preview_link = get_preview_post_link(
+                               $post->post_parent,
+                               array(
+                                       'wporg_explanations_preview_id'    => $url_query['preview_id'],
+                                       'wporg_explanations_preview_nonce' => $url_query['preview_nonce'],
+                               )
+                       );
+               }
+
+               return $preview_link;
+       }
+
+       /**
</ins><span class="cx" style="display: block; padding: 0 10px">          * Customizes admin menu.
</span><span class="cx" style="display: block; padding: 0 10px">         *
</span><span class="cx" style="display: block; padding: 0 10px">         * - Removes "Add new".
</span></span></pre></div>
<a id="sitestrunkwordpressorgpublic_htmlwpcontentthemespubwporgdeveloperinctemplatetagsphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/template-tags.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/template-tags.php 2020-02-13 11:33:17 UTC (rev 9502)
+++ sites/trunk/wordpress.org/public_html/wp-content/themes/pub/wporg-developer/inc/template-tags.php   2020-02-13 23:40:22 UTC (rev 9503)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -1681,8 +1681,22 @@
</span><span class="cx" style="display: block; padding: 0 10px">                $post = get_explanation( $_post );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                // Get explanation's raw post content.
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                $content = get_explanation_field( 'post_content', $_post );
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         $content = '';
+               if (
+                       ! empty( $_GET['wporg_explanations_preview_nonce'] )
+               &&
+                       false !== wp_verify_nonce( $_GET['wporg_explanations_preview_nonce'], 'post_preview_' . $post->ID )
+               ) {
+                       $preview = wp_get_post_autosave( $post->ID );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        if ( is_object( $preview ) ) {
+                               $post = $preview;
+                               $content = get_post_field( 'post_content', $preview, 'display' );
+                       }
+               } else {
+                       $content = get_explanation_field( 'post_content', $_post );
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 // Pass the content through expected content filters.
</span><span class="cx" style="display: block; padding: 0 10px">                $content = apply_filters( 'the_content', apply_filters( 'get_the_content', $content ) );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre>
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