';
echo ' var attachments_base = "' . WP_PLUGIN_URL . '/attachments"; ';
echo ' var attachments_media = ""; ';
echo '';
}
/**
* Fired when Post or Page is saved. Serializes all attachment data and saves to post_meta
*
* @param int $post_id The ID of the current post
* @return void
* @author Jonathan Christopher
* @author JR Tashjian
*/
function attachments_save($post_id)
{
// verify this came from the our screen and with proper authorization,
// because save_post can be triggered at other times
if ( !wp_verify_nonce( $_POST['attachments_nonce'], plugin_basename(__FILE__) )) {
return $post_id;
}
// verify if this is an auto save routine. If it is our form has not been submitted, so we dont want
// to do anything
if ( defined('DOING_AUTOSAVE') && DOING_AUTOSAVE )
return $post_id;
// Check permissions
if ( 'page' == $_POST['post_type'] ) {
if ( !current_user_can( 'edit_page', $post_id ) )
return $post_id;
} else {
if ( !current_user_can( 'edit_post', $post_id ) )
return $post_id;
}
// OK, we're authenticated: we need to find and save the data
// delete all current attachments meta
// moved outside conditional, else we can never delete all attachments
delete_post_meta($post_id, '_attachments');
// Since we're allowing Attachments to be sortable, we can't simply increment a counter
// we need to keep track of the IDs we're given
$attachment_ids = array();
// We'll build our array of attachments
foreach($_POST as $key => $data) {
// Arbitrarily using the id
if( substr($key, 0, 14) == 'attachment_id_' )
{
array_push( $attachment_ids, substr( $key, 14, strlen( $key ) ) );
}
}
// If we have attachments, there's work to do
if( !empty( $attachment_ids ) )
{
foreach ( $attachment_ids as $i )
{
if( !empty( $_POST['attachment_id_' . $i] ) )
{
$attachment_details = array(
'id' => $_POST['attachment_id_' . $i],
'title' => $_POST['attachment_title_' . $i],
'caption' => $_POST['attachment_caption_' . $i],
'order' => $_POST['attachment_order_' . $i]
);
// serialize data and encode
$attachment_serialized = base64_encode( serialize( $attachment_details ) );
// add individual attachment
add_post_meta( $post_id, '_attachments', $attachment_serialized );
}
}
}
}
/**
* Retrieves all Attachments for provided Post or Page
*
* @param int $post_id (optional) ID of target Post or Page, otherwise pulls from global $post
* @return array $post_attachments
* @author Jonathan Christopher
* @author JR Tashjian
*/
function attachments_get_attachments( $post_id=null )
{
global $post;
if( $post_id==null )
{
$post_id = $post->ID;
}
// get all attachments
$existing_attachments = get_post_meta( $post_id, '_attachments', false );
$legacy_existing_attachments = unserialize( $existing_attachments[0] );
// Check for legacy attachments
if( is_array( $legacy_existing_attachments ) )
{
$tmp_legacy_attachments = array();
// Legacy attachments (single serialized record)
foreach ( $legacy_existing_attachments as $legacy_attachment )
{
array_push( $tmp_legacy_attachments, base64_encode( serialize( $legacy_attachment ) ) );
}
$existing_attachments = $tmp_legacy_attachments;
}
// We can now proceed as normal, all legacy data should now be upgraded
if( is_array( $existing_attachments ) && count( $existing_attachments ) > 0 )
{
$post_attachments = array();
foreach ($existing_attachments as $attachment)
{
// decode and unserialize the data
$data = unserialize( base64_decode( $attachment ) );
array_push( $post_attachments, array(
'id' => stripslashes( $data['id'] ),
'name' => stripslashes( get_the_title( $data['id'] ) ),
'mime' => stripslashes( get_post_mime_type( $data['id'] ) ),
'title' => stripslashes( $data['title'] ),
'caption' => stripslashes( $data['caption'] ),
'location' => stripslashes( wp_get_attachment_url( $data['id'] ) ),
'order' => stripslashes( $data['order'] )
));
}
// sort attachments
if( count( $post_attachments ) > 1 )
{
usort( $post_attachments, "attachments_cmp" );
}
}
return $post_attachments;
}
/**
* This is the main initialization function, it will invoke the necessary meta_box
*
* @return void
* @author Jonathan Christopher
*/
function attachments_init()
{
wp_enqueue_style('attachments', WP_PLUGIN_URL . '/attachments/css/attachments.css');
wp_enqueue_script('attachments', WP_PLUGIN_URL . '/attachments/js/attachments.js');
attachments_meta_box();
}
