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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 |
|---|---|
| 2266 | |
| 2267 | /** |
| 2268 | * Filters the media upload form action URL. |
| 2269 | * |
| 2270 | * @since 2.6.0 |
| 2271 | * |
| 2272 | * @param string $form_action_url The media upload form action URL. |
| 2273 | * @param string $type The type of media. Default 'file'. |
| 2274 | */ |
| 2275 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2276 | $form_class = 'media-upload-form type-form validate'; |
| 2277 | |
| 2278 | if ( get_user_setting( 'uploader' ) ) { |
| 2279 | $form_class .= ' html-uploader'; |
| 2280 | } |
| 2281 | |
| 2282 | ?> |
| 2283 | <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"> |
| 2284 | <?php submit_button( '', 'hidden', 'save', false ); ?> |
| Line | Code |
| 2335 | $type = 'image'; |
| 2336 | } |
| 2337 | |
| 2338 | media_upload_header(); |
| 2339 | |
| 2340 | $post_id = isset( $_REQUEST['post_id'] ) ? intval( $_REQUEST['post_id'] ) : 0; |
| 2341 | |
| 2342 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=type&post_id=$post_id" ); |
| 2343 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2344 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2345 | $form_class = 'media-upload-form type-form validate'; |
| 2346 | |
| 2347 | if ( get_user_setting( 'uploader' ) ) { |
| 2348 | $form_class .= ' html-uploader'; |
| 2349 | } |
| 2350 | |
| 2351 | ?> |
| 2352 | <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"> |
| 2353 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| Line | Code |
| 2482 | function media_upload_gallery_form( $errors ) { |
| 2483 | global $redir_tab, $type; |
| 2484 | |
| 2485 | $redir_tab = 'gallery'; |
| 2486 | media_upload_header(); |
| 2487 | |
| 2488 | $post_id = intval( $_REQUEST['post_id'] ); |
| 2489 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=gallery&post_id=$post_id" ); |
| 2490 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2491 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2492 | $form_class = 'media-upload-form validate'; |
| 2493 | |
| 2494 | if ( get_user_setting( 'uploader' ) ) { |
| 2495 | $form_class .= ' html-uploader'; |
| 2496 | } |
| 2497 | |
| 2498 | ?> |
| 2499 | <script type="text/javascript"> |
| 2500 | jQuery(function($){ |
| Line | Code |
| 2646 | function media_upload_library_form( $errors ) { |
| 2647 | global $wpdb, $wp_query, $wp_locale, $type, $tab, $post_mime_types; |
| 2648 | |
| 2649 | media_upload_header(); |
| 2650 | |
| 2651 | $post_id = isset( $_REQUEST['post_id'] ) ? intval( $_REQUEST['post_id'] ) : 0; |
| 2652 | |
| 2653 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=library&post_id=$post_id" ); |
| 2654 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2655 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2656 | $form_class = 'media-upload-form validate'; |
| 2657 | |
| 2658 | if ( get_user_setting( 'uploader' ) ) { |
| 2659 | $form_class .= ' html-uploader'; |
| 2660 | } |
| 2661 | |
| 2662 | $q = $_GET; |
| 2663 | $q['posts_per_page'] = 10; |
| 2664 | $q['paged'] = isset( $q['paged'] ) ? intval( $q['paged'] ) : 0; |