I have created a block through custom module and added file field in block configuration form using below code.

function mymodule_block_configure($delta){
    $form = array();
        '#title'=>'Upload text file',

    return $form;

When I try to check this field in hook_block_save, the form element is empty even when the form is submitted after browsing the file.

 function mumodule_block_save($delta,$edit=array()){

$edit['mymodule_file'] is empty after the form is submitted.

Am I missing anything?

1 Answer 1


You want to use the #type 'managed_file' instead of just file: http://api.drupal.org/api/drupal/developer--topics--forms_api_reference.html/7#managed_file.

That will then automatically save the file and create a row in {file_managed}, You just need to set it as permament, as explained in the link above and then save the fid, for example with variable_set().

You can also set the #default_value for the fid, and it will display the field again.

  • Thanks for the reply. But I do not want to save the file. I just need to set some variables depending on file content. How can I do that? Is it possible to read the file from temporary path? Also, how can I restrict the file type to text? My be my question title is misleading. Going to edit it now. Sep 18, 2011 at 12:10
  • Ah, have a look at blog.ryantan.net/2011/04/drupal-7-handling-file-uploads then.
    – Berdir
    Sep 18, 2011 at 13:01
  • thanks for that. i will give it a try. But still I am not sure if it is possible to read the uploaded file without saving it. Sep 18, 2011 at 13:48
  • Have a look at the linked file_save_upload() function, there you can see where it gets the files from ($_FILES).
    – Berdir
    Sep 18, 2011 at 15:03

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