"managed_file" form field type returns null value in my form submission
I am have been stuggling with this for the past day or so. I am simply trying to create a custom entity and populate/or update the image field with the fid. Whats weird is that every other form field i am passing i can get the value for but this managed_file field for uploading an image always returns NULL when I call dpm().
use DrupalCoreFormFormBase; use DrupalCoreFormFormStateInterface; use DrupalfileEntityFile;
Within my form_build function I use the following code.
// Manage file. $form['theimage'] = array( '#type' => 'managed_file', '#title' => 'Managed file', '#description' => $this->t('Manage file, #type = managed_file'), //'#default_value' => $form_state->getValue('theimage'), '#upload_location' => 'public://images/', '#required' => FALSE, );
In the submission handler, I use the following code.
// Get the fid value, upload it and save it to the managed file table. $fid = $form_state->getValue(['theimage', 0]); dpm($fid); if (!empty($fid)) { $file = File::load($fid); $file->setPermanent(); $file->save(); }
Any thoughts, solutions, or recommendations would be greatly appreciated.