Upload files using managed file form API

By jesterFortyEight on 3 Mar 2016 at 17:43 UTC

I have a form created using the form API.
the form has 2 managed file upload options

$form['rate_table_logo'] = array(
		'#type' => 'managed_file',
		'#title' => t('Rate Table Logo:'),
		'#default_value' => variable_get('rate_table_logo', ''),
		'#upload_location' => 'public://rate_logo/',
		
	);
	$form[form_logo'] = array(
		'#type' => 'managed_file',
		'#title' => t('Mortgage Form Logo:'),
		'#default_value' => variable_get('form_logo', ''),
		'#upload_location' => 'public://form_logo/',
		
	);

how do I process the form field if the user used the file upload option?
how do I process the form field if the user did not use the file upload option?

I have

$validators = array();
$file = $form_state['values']['rate_table_logo'];
$file = file_save_upload('file', $validators, 'public://');

which does not seem to work

Comments

Did you try this as I think

joshi.rohit100

he/him

Hindi

Delhi, India

commented 3 March 2016 at 18:47

Did you try this as I think it is handled by drupal. You don't need to do anything.

Then how do i get the

jesterFortyEight commented 3 March 2016 at 19:56

Then how do i get the uploaded file path and fid?

$form_state['value']['rate

Jaypan commented 4 March 2016 at 01:15

$form_state['value']['rate_table_logo'] and $form_state['values']['form_logo'] will be equal to either 0 (zero - no file uploaded) or the fid of the uploaded file.

Note that at this point, the status of these files is FILE_STATUS_TEMPORARY, which means that the file will be deleted on the next cron run that comes six hours after the file was uploaded. You need to set the status to FILE_STATUS_PERMANENT. You can do this in your submit handler:

$file = file_load($form_state['values']['rate_table_logo']);
$file->status = FILE_STATUS_PERMANENT;
file_save($file);

You'll also need to add a 'usage' to the file, by calling file_usage_add(). And you'll also need to remove a 'usage' wherever the file may be deleted, by calling file_usage_delete().

ok, i got the permanent

jesterFortyEight commented 4 March 2016 at 13:21

ok, i got the permanent process to work, but I am completely confused by the file_usage_add and file_usage_delete portion of your reply.

Drupal allows files to be

Jaypan commented 4 March 2016 at 13:55

Drupal allows files to be reused. Each time a file is 'used' (that is to say, attached to some data), you need to add a 'usage'. You also need to add a usage remover, when that usage is done (for example when either the file, or the item it's attached to are deleted).

When you call file_delete() on a file, Drupal will check if there are still any registered usages for the file. If there are, then it doesn't delete the file. If there are no more usages, it will set the file to be deleted on a later cron run.

Because of this, you need to register a usage any time you add a file to the File API, or else you can get some hard to track bugs. And any time you register a usage, you need to ensure that your code also removes that usage somewhere else, to ensure that you don't end up with ghost files in your system.