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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 4 times in this file.
| Line | Code |
|---|---|
| 2285 | |
| 2286 | /** |
| 2287 | * Filters the media upload form action URL. |
| 2288 | * |
| 2289 | * @since 2.6.0 |
| 2290 | * |
| 2291 | * @param string $form_action_url The media upload form action URL. |
| 2292 | * @param string $type The type of media. Default 'file'. |
| 2293 | */ |
| 2294 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2295 | $form_class = 'media-upload-form type-form validate'; |
| 2296 | |
| 2297 | if ( get_user_setting( 'uploader' ) ) { |
| 2298 | $form_class .= ' html-uploader'; |
| 2299 | } |
| 2300 | |
| 2301 | ?> |
| 2302 | <form enctype="multipart/form-data" method="post" action="<?php echo esc_url( $form_action_url ); ?>" class="<?php echo $form_class; ?>" id="<?php echo $type; ?>-form"> |
| 2303 | <?php submit_button( '', 'hidden', 'save', false ); ?> |
| Line | Code |
| 2354 | $type = 'image'; |
| 2355 | } |
| 2356 | |
| 2357 | media_upload_header(); |
| 2358 | |
| 2359 | $post_id = isset( $_REQUEST['post_id'] ) ? intval( $_REQUEST['post_id'] ) : 0; |
| 2360 | |
| 2361 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=type&post_id=$post_id" ); |
| 2362 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2363 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2364 | $form_class = 'media-upload-form type-form validate'; |
| 2365 | |
| 2366 | if ( get_user_setting( 'uploader' ) ) { |
| 2367 | $form_class .= ' html-uploader'; |
| 2368 | } |
| 2369 | |
| 2370 | ?> |
| 2371 | <form enctype="multipart/form-data" method="post" action="<?php echo esc_url( $form_action_url ); ?>" class="<?php echo $form_class; ?>" id="<?php echo $type; ?>-form"> |
| 2372 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| Line | Code |
| 2501 | function media_upload_gallery_form( $errors ) { |
| 2502 | global $redir_tab, $type; |
| 2503 | |
| 2504 | $redir_tab = 'gallery'; |
| 2505 | media_upload_header(); |
| 2506 | |
| 2507 | $post_id = intval( $_REQUEST['post_id'] ); |
| 2508 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=gallery&post_id=$post_id" ); |
| 2509 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2510 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2511 | $form_class = 'media-upload-form validate'; |
| 2512 | |
| 2513 | if ( get_user_setting( 'uploader' ) ) { |
| 2514 | $form_class .= ' html-uploader'; |
| 2515 | } |
| 2516 | |
| 2517 | ?> |
| 2518 | <script type="text/javascript"> |
| 2519 | jQuery(function($){ |
| Line | Code |
| 2665 | function media_upload_library_form( $errors ) { |
| 2666 | global $wpdb, $wp_query, $wp_locale, $type, $tab, $post_mime_types; |
| 2667 | |
| 2668 | media_upload_header(); |
| 2669 | |
| 2670 | $post_id = isset( $_REQUEST['post_id'] ) ? intval( $_REQUEST['post_id'] ) : 0; |
| 2671 | |
| 2672 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=library&post_id=$post_id" ); |
| 2673 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2674 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2675 | $form_class = 'media-upload-form validate'; |
| 2676 | |
| 2677 | if ( get_user_setting( 'uploader' ) ) { |
| 2678 | $form_class .= ' html-uploader'; |
| 2679 | } |
| 2680 | |
| 2681 | $q = $_GET; |
| 2682 | $q['posts_per_page'] = 10; |
| 2683 | $q['paged'] = isset( $q['paged'] ) ? intval( $q['paged'] ) : 0; |