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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 |
|---|---|
| 2325 | |
| 2326 | /** |
| 2327 | * Filters the media upload form action URL. |
| 2328 | * |
| 2329 | * @since 2.6.0 |
| 2330 | * |
| 2331 | * @param string $form_action_url The media upload form action URL. |
| 2332 | * @param string $type The type of media. Default 'file'. |
| 2333 | */ |
| 2334 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2335 | $form_class = 'media-upload-form type-form validate'; |
| 2336 | |
| 2337 | if ( get_user_setting( 'uploader' ) ) { |
| 2338 | $form_class .= ' html-uploader'; |
| 2339 | } |
| 2340 | |
| 2341 | ?> |
| 2342 | <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"> |
| 2343 | <?php submit_button( '', 'hidden', 'save', false ); ?> |
| Line | Code |
| 2394 | $type = 'image'; |
| 2395 | } |
| 2396 | |
| 2397 | media_upload_header(); |
| 2398 | |
| 2399 | $post_id = isset( $_REQUEST['post_id'] ) ? (int) $_REQUEST['post_id'] : 0; |
| 2400 | |
| 2401 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=type&post_id=$post_id" ); |
| 2402 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2403 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2404 | $form_class = 'media-upload-form type-form validate'; |
| 2405 | |
| 2406 | if ( get_user_setting( 'uploader' ) ) { |
| 2407 | $form_class .= ' html-uploader'; |
| 2408 | } |
| 2409 | |
| 2410 | ?> |
| 2411 | <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"> |
| 2412 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| Line | Code |
| 2541 | function media_upload_gallery_form( $errors ) { |
| 2542 | global $redir_tab, $type; |
| 2543 | |
| 2544 | $redir_tab = 'gallery'; |
| 2545 | media_upload_header(); |
| 2546 | |
| 2547 | $post_id = (int) $_REQUEST['post_id']; |
| 2548 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=gallery&post_id=$post_id" ); |
| 2549 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2550 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2551 | $form_class = 'media-upload-form validate'; |
| 2552 | |
| 2553 | if ( get_user_setting( 'uploader' ) ) { |
| 2554 | $form_class .= ' html-uploader'; |
| 2555 | } |
| 2556 | |
| 2557 | ?> |
| 2558 | <script type="text/javascript"> |
| 2559 | jQuery(function($){ |
| Line | Code |
| 2704 | function media_upload_library_form( $errors ) { |
| 2705 | global $wpdb, $wp_query, $wp_locale, $type, $tab, $post_mime_types; |
| 2706 | |
| 2707 | media_upload_header(); |
| 2708 | |
| 2709 | $post_id = isset( $_REQUEST['post_id'] ) ? (int) $_REQUEST['post_id'] : 0; |
| 2710 | |
| 2711 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=library&post_id=$post_id" ); |
| 2712 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2713 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2714 | $form_class = 'media-upload-form validate'; |
| 2715 | |
| 2716 | if ( get_user_setting( 'uploader' ) ) { |
| 2717 | $form_class .= ' html-uploader'; |
| 2718 | } |
| 2719 | |
| 2720 | $q = $_GET; |
| 2721 | $q['posts_per_page'] = 10; |
| 2722 | $q['paged'] = isset( $q['paged'] ) ? (int) $q['paged'] : 0; |