Respond to a file being updated.

This hook is called when file_save() is called on an existing file.

Parameters

$file: The file that has just been updated.

See also

file_save()

Related topics

4 functions implement hook_file_update()

Note: the procedural functions in this list are found by pattern matching, so the list may include some functions that are not actually implementations of this hook.

EntityCrudHookTestHooks::fileUpdate in core/modules/system/tests/modules/entity_crud_hook_test/src/Hook/EntityCrudHookTestHooks.php

Implements hook_ENTITY_TYPE_update() for file entities.

entity_crud_hook_test_file_update in modules/simpletest/tests/entity_crud_hook_test.module

Implements hook_file_update().

FileTestHooks::fileUpdate in core/modules/file/tests/file_test/src/Hook/FileTestHooks.php

Implements hook_ENTITY_TYPE_update() for file entities.

file_test_file_update in modules/simpletest/tests/file_test.module

Implements hook_file_update().

1 invocation of hook_file_update()

file_save in includes/file.inc

Saves a file object to the database.

File

modules/system/system.api.php, line 2922

Code

function hook_file_update($file) {
  $file_user = user_load($file->uid);
  // Make sure that the file name starts with the owner's user name.
  if (strpos($file->filename, $file_user->name) !== 0) {
    $old_filename = $file->filename;
    $file->filename = $file_user->name . '_' . $file->filename;
    $file->save();
    watchdog('file', t('%source has been renamed to %destination', array(
      '%source' => $old_filename,
      '%destination' => $file->filename,
    )));
  }
}

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