Custom classes for attachments

Question

Custom classes for attachments

Nikita

2016年10月14日 21:11

I'm trying to create a custom field in ATTACHMENT DETAILS section. I want to add in this field multiply words separated by space which will be than added as a classes to particular images.

This is the solution I've found so far. It adds custom field but it doesn't add a class to images. What is wrong here?

function add_attachment_classes_field( $form_fields, $post ) {
$field_value = get_post_meta( $post-ID, 'classes', true );
  $form_fields['classes'] = array(
    'value' = $field_value ? $field_value : '',
    'label' = __( 'Classes' ),
    'helps' = __( 'Add class seperated by space' )
  );
 return $form_fields;
}
add_filter( 'attachment_fields_to_edit', 'add_attachment_classes_field', 10, 2 );

function save_attachment_classes( $attachment_id ) {
  if ( isset( $_REQUEST['attachments'][$attachment_id]['classes'] ) ) {
   $classes = $_REQUEST['attachments'][$attachment_id]['classes'];
   update_post_meta( $attachment_id, 'classes', $classes );
  }
}
add_action( 'edit_attachment', 'save_attachment_classes' );

Topic attachment-fields-to-edit custom-field Wordpress

Category Web

Vinod Dalvi · Accepted Answer · 2013年8月28日 12:20

Just add the following code in functions.php file of your theme which will add your custom added classes to images when you will insert it into post editor.

function add_image_class($html, $id, $caption, $title, $align, $url, $size, $alt = '' ){
$classes = get_post_meta( $id, 'classes', true );
if ( preg_match('/<img.*? class=".*?">/', $html) ) {
    $html = preg_replace('/(<img.*? class=".*?)(".*?>)/', '$1 ' . $classes . '$2', $html);
} else {
    $html = preg_replace('/(<img.*?)>/', '$1 class="' . $classes . '" >', $html);
}
return $html;
}
add_filter('image_send_to_editor','add_image_class',10,8);

Custom classes for attachments

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