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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 |
---|---|
1455 |
|
1456 | /** |
1457 | * Filters the attachment fields to edit. |
1458 | * |
1459 | * @since 2.5.0 |
1460 | * |
1461 | * @param array $form_fields An array of attachment form fields. |
1462 | * @param WP_Post $post The WP_Post attachment object. |
1463 | */ |
1464 | $form_fields = apply_filters( 'attachment_fields_to_edit', $form_fields, $post ); |
1465 |
|
1466 | return $form_fields; |
1467 | } |
1468 |
|
1469 | /** |
1470 | * Retrieve HTML for media items of post gallery. |
1471 | * |
1472 | * The HTML markup retrieved will be created for the progress of SWF Upload |
1473 | * component. Will also create link for showing and hiding the form to modify |
Line | Code |
1874 | $form_fields[ $taxonomy ] = $t; |
1875 | } |
1876 | } |
1877 |
|
1878 | // Merge default fields with their errors, so any key passed with the error (e.g. 'error', 'helps', 'value') will replace the default |
1879 | // The recursive merge is easily traversed with array casting: foreach ( (array) $things as $thing ) |
1880 | $form_fields = array_merge_recursive( $form_fields, (array) $args['errors'] ); |
1881 |
|
1882 | /** This filter is documented in wp-admin/includes/media.php */ |
1883 | $form_fields = apply_filters( 'attachment_fields_to_edit', $form_fields, $post ); |
1884 |
|
1885 | unset( |
1886 | $form_fields['image-size'], |
1887 | $form_fields['align'], |
1888 | $form_fields['image_alt'], |
1889 | $form_fields['post_title'], |
1890 | $form_fields['post_excerpt'], |
1891 | $form_fields['post_content'], |
1892 | $form_fields['url'], |