I'm attempting to create a module with a custom form that allows users to upload a file using a managed_file field. The name of my module is foundation_settings and the file structure is:
foundation_settings -foundation_settings.info.yml -foundation_settings.module -src -Form -FoundationForm.php
Inside FoundationForm.php I'm building the form with the following code:
public function buildForm(array $form, FormStateInterface $form_state) { $config = $this->config('foundation.settings'); $form['icons'] = [ '#type' => 'details', '#title' => t('Front Page Icons'), '#open' => FALSE, 'icon1' => [ '#type' => 'fieldset', '#title' => t('First Icon'), 'icon1_file' => [ '#type' => 'managed_file', '#name' => 'icon1', '#title' => t('First Icon Image'), '#default_value' => $config->get('icon1_file'), '#upload_location' => 'public://', ], ], ]; }
However I'm not sure how to handle the managed_file when the form is being submitted. In my submitForm function I have
public function submitForm(array&$form, FormStateInterface $form_state) { $imageid = $form_state->getValue('icon1_file'); $file = file_load($imageid[0]); if (gettype($file) == 'object') { $file->status = FILE_STATUS_PERMANENT; } $this->config('foundation.settings') ->set('icon1_file', $form_state->getValue('icon1_file')) ->save(); $file->save(); }
The upload and saving works okay but I keep receiving the error
The file used in the First Icon Image field may not be referenced.
How are you supposed to use managed_file field in custom form plugins?
