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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 |
|---|---|
| 1960 | |
| 1961 | /** |
| 1962 | * Filter the media upload form action URL. |
| 1963 | * |
| 1964 | * @since 2.6.0 |
| 1965 | * |
| 1966 | * @param string $form_action_url The media upload form action URL. |
| 1967 | * @param string $type The type of media. Default 'file'. |
| 1968 | */ |
| 1969 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 1970 | $form_class = 'media-upload-form type-form validate'; |
| 1971 | |
| 1972 | if ( get_user_setting('uploader') ) |
| 1973 | $form_class .= ' html-uploader'; |
| 1974 | ?> |
| 1975 | |
| 1976 | <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"> |
| 1977 | <?php submit_button( '', 'hidden', 'save', false ); ?> |
| 1978 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| Line | Code |
| 2024 | if ( null === $type ) |
| 2025 | $type = 'image'; |
| 2026 | |
| 2027 | media_upload_header(); |
| 2028 | |
| 2029 | $post_id = isset( $_REQUEST['post_id'] ) ? intval( $_REQUEST['post_id'] ) : 0; |
| 2030 | |
| 2031 | $form_action_url = admin_url("media-upload.php?type=$type&tab=type&post_id=$post_id"); |
| 2032 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2033 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2034 | $form_class = 'media-upload-form type-form validate'; |
| 2035 | |
| 2036 | if ( get_user_setting('uploader') ) |
| 2037 | $form_class .= ' html-uploader'; |
| 2038 | ?> |
| 2039 | |
| 2040 | <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"> |
| 2041 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| 2042 | <?php wp_nonce_field('media-form'); ?> |
| Line | Code |
| 2167 | function media_upload_gallery_form($errors) { |
| 2168 | global $redir_tab, $type; |
| 2169 | |
| 2170 | $redir_tab = 'gallery'; |
| 2171 | media_upload_header(); |
| 2172 | |
| 2173 | $post_id = intval($_REQUEST['post_id']); |
| 2174 | $form_action_url = admin_url("media-upload.php?type=$type&tab=gallery&post_id=$post_id"); |
| 2175 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2176 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2177 | $form_class = 'media-upload-form validate'; |
| 2178 | |
| 2179 | if ( get_user_setting('uploader') ) |
| 2180 | $form_class .= ' html-uploader'; |
| 2181 | ?> |
| 2182 | |
| 2183 | <script type="text/javascript"> |
| 2184 | jQuery(function($){ |
| 2185 | var preloaded = $(".media-item.preloaded"); |
| Line | Code |
| 2319 | function media_upload_library_form($errors) { |
| 2320 | global $wpdb, $wp_query, $wp_locale, $type, $tab, $post_mime_types; |
| 2321 | |
| 2322 | media_upload_header(); |
| 2323 | |
| 2324 | $post_id = isset( $_REQUEST['post_id'] ) ? intval( $_REQUEST['post_id'] ) : 0; |
| 2325 | |
| 2326 | $form_action_url = admin_url("media-upload.php?type=$type&tab=library&post_id=$post_id"); |
| 2327 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2328 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2329 | $form_class = 'media-upload-form validate'; |
| 2330 | |
| 2331 | if ( get_user_setting('uploader') ) |
| 2332 | $form_class .= ' html-uploader'; |
| 2333 | |
| 2334 | $q = $_GET; |
| 2335 | $q['posts_per_page'] = 10; |
| 2336 | $q['paged'] = isset( $q['paged'] ) ? intval( $q['paged'] ) : 0; |
| 2337 | if ( $q['paged'] < 1 ) { |