function _imagefield_preview in ImageField 5.2

Same name and namespace in other branches

1. 5 imagefield.module \_imagefield_preview()

Transfer a file that is in a 'preview' state.

@todo multiple support

1 string reference to '_imagefield_preview'

imagefield_menu in ./imagefield.module

Implementation of hook_menu().

File

./imagefield.module, line 55

Defines an image field type. imagefield uses content.module to store the fid, and the drupal files table to store the actual file data.

Code

function _imagefield_preview($filepath) {
  foreach ($_SESSION['imagefield'] as $fieldname => $files) {
    foreach ($files as $delta => $file) {
      if ($file['preview'] == $filepath) {

        // Emulate a normal file transfer by setting cache flags that will
        // prevent the image from needing to be resent on previews. Without
        // setting the cache headers, transfered images still get the expire
        // headers set in drupal_page_header().
        $modified_time = filemtime($file['filepath']);
        $last_modified = gmdate('D, d M Y H:i:s', $modified_time) . ' GMT';
        $etag = '"' . md5($last_modified) . '"';
        file_transfer($file['filepath'], array(
          'Content-Type: ' . mime_header_encode($file['filemime']),
          'Content-Length: ' . $file['filesize'],
          'Cache-Control: max-age=1209600',
          'Expires: ' . gmdate('D, d M Y H:i:s', time() + 1209600) . ' GMT',
          // Two weeks.
          'Last-Modified: ' . $last_modified,
          'ETag: ' . $etag,
        ));
      }
    }
  }
}