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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
This hook occurs 2 times in this file.
| Line | Code |
|---|---|
| 1265 | if ( 'publish' == $post->post_status || $user->ID != $post->post_author ) { |
| 1266 | // Latest content is in autosave |
| 1267 | $nonce = wp_create_nonce( 'post_preview_' . $post->ID ); |
| 1268 | $preview_link = add_query_arg( array( 'preview_id' => $post->ID, 'preview_nonce' => $nonce ), $preview_link ); |
| 1269 | } |
| 1270 | } else { |
| 1271 | $preview_link = ''; |
| 1272 | } |
| 1273 | |
| 1274 | $preview_link = apply_filters( 'preview_post_link', $preview_link ); |
| 1275 | $override = apply_filters( 'override_post_lock', true, $post, $user ); |
| 1276 | $tab_last = $override ? '' : ' wp-tab-last'; |
| 1277 | |
| 1278 | ?> |
| 1279 | <div class="post-locked-message"> |
| 1280 | <div class="post-locked-avatar"><?php echo get_avatar( $user->ID, 64 ); ?></div> |
| 1281 | <p class="currently-editing wp-tab-first" tabindex="0"> |
| 1282 | <?php |
| 1283 | _e( 'This content is currently locked.' ); |
| Line | Code |
| 1442 | 'preview_nonce' => $nonce, |
| 1443 | ); |
| 1444 | |
| 1445 | if ( isset( $_POST['post_format'] ) ) |
| 1446 | $args['post_format'] = empty( $_POST['post_format'] ) ? 'standard' : sanitize_key( $_POST['post_format'] ); |
| 1447 | |
| 1448 | $url = add_query_arg( $args, get_permalink($id) ); |
| 1449 | } |
| 1450 | |
| 1451 | return apply_filters( 'preview_post_link', $url ); |
| 1452 | } |
| 1453 | |