I am building a theme with ability to upload custom background images but now I am stuck at a point.
How do I properly add FILE field in drupal form via theme-setting.php and after that how can I get public url to this file in my template files??
In your theme_form_system_theme_settings_alter hook you need to add the following form element:
$form['theme_settings']['background_file'] = array(
'#type' => 'managed_file',
'#title' => t('Background'),
'#required' => FALSE,
'#upload_location' => file_default_scheme() . '://theme/backgrounds/',
'#default_value' => theme_get_setting('background_file'),
'#upload_validators' => array(
'file_validate_extensions' => array('gif png jpg jpeg'),
),
);
This will save the file id to your theme settigns variable 'background_file', notice that i set the upload location to theme/backgrounds, this will be inside your files folder.
Finally you'll get the complete URL to the file with file_create_url:
$fid = theme_get_setting('background_file');
$image_url = file_create_url(file_load($fid)->uri);
Edit:
In your template.php you can add in the theme_preprocess_page hook the variable so all the tpl's can access it, this is how:
function theme_preprocess_page(&$variables, $hook) {
$fid = theme_get_setting('background_file');
$variables['background_url'] = file_create_url(file_load($fid)->uri);
}
Hope this helps! :D
Related
I am building a form and where te user can upload a file. Since I am using Drupal I am using the managed_file. The file is being uploaded but I cannot seem to get the filename out of the form... This is my code
Buildform:
$form['formfile'] = array(
'#type' => 'managed_file',
'#name' => 'formfile',
'#title' => t('File'),
'#upload_validators' => $validators,
'#upload_location' => 'public://trainingrequests/',
);
Submit
drupal_set_message($form_state->getValue('formfile'));
I have literally tried everything.
You first need to get the entity ID of the File entity, then load the entity:
$formfile = $form_state->getValue('formfile');
if ($formfile) {
$oNewFile = File::load(reset($formfile));
$oNewFile->setPermanent();
drupal_set_message('Filename: ' . $oNewFile->getFilename());
}
You can browse the source code of the File entity in your file system: core/modules/file/src/Entity/File.php
I want to add several image upload fields to my theme options by using the WP Customization API.
For each of these upload fields I want to rename the uploaded file to a fixed name.
So for example, I want to add a hero_image field, and it should always be stored as hero.jpg.
I added a setting called hero_image,
$wp_customize->add_setting( 'hero_image' , array(
'default' => '',
) );
This is the related control
$wp_customize->add_control(
new WP_Customize_Image_Control(
$wp_customize,
'hero_image_control',
array(
'label' => 'Site hero',
'section' => 'context_settings',
'settings' => 'hero_image',
'context' => 'your_setting_context'
)
)
);
I know I can add a sanitize callback, but this won't rename the uploaded file.
If anyone knows how to add a preupload filter for a specific field, it would make my day :D
I have a custom form, with a field for the user to upload an image file (their logo). In the form validate hook, I've implemented file_save_upload, which is continually returning false. I can see that the file is in fact being saved in the correct location on upload, so why isn't file_save_upload working?
The form field:
$form['company_logo'] = array(
'#type' => 'managed_file',
'#title' => t('Company Logo'),
'#description' => t('Allowed extensions: gif png jpg jpeg'),
'#upload_location' => 'public://uploads/',
'#upload_validators' => array(
'file_validate_extensions' => array('gif png jpg jpeg'),
// Pass the maximum file size in bytes
//'file_validate_size' => array(MAX_FILE_SIZE*1024*1024),
),
);
The validation hook:
$file = file_save_upload( 'company_logo' , array(), 'public://uploads/', FILE_EXISTS_RENAME);
if (!$file) {
form_set_error('company_logo', t('Unable to access file or file is missing.'));
}
The managed file element handles moving the uploaded file for you, so there's no need to call file_save_upload() manually.
You're getting a NULL return because of these lines in file_save_upload():
// Make sure there's an upload to process.
if (empty($_FILES['files']['name'][$source])) {
return NULL;
}
As the file's already been processed there's nothing for the function to do.
You can persist the file entry by adding a submit handler to the form and using code similar to
$file = file_load($form_state['values']['company_logo']);
$file->status = FILE_STATUS_PERMANENT;
file_save($file);
I'm creating a user-submitted post tool for a Wordpress site.
The user can enter an image URL and I want it to be added to the post along with other content like title and post content.
I've got this working using a regular image attachment. I create the post and then attach the image using this script:
$files = $_FILES['upload_attachment'];
$file = array(
'name' => $files['name'],
'type' => $files['type'],
'tmp_name' => $files['tmp_name'],
'error' => $files['error'],
'size' => $files['size']
);
$_FILES = array("upload_attachment" => $file);
foreach ($_FILES as $file => $array) {
$newupload = insert_attachment($file,$userPost);
}
But how can I do the same thing using insert_attachment() or similar but with a URL?
I think you can use file_get_contents() and file_put_contents(). You'd probably have to do something like this:
file_put_contents('your_file_on_server.xxx', file_get_contents('http://someurl.com/filename.xxx'));
This would download the file from the specified url and save it to your server. From there you can slightly modify your original code to attach it to a post.
I have a file upload form
how can I retain this file when there are other validation errors so that the user doesn't have to upload the file again?
I tried this in my validation function but it doesn't work:
function mymodule_someform_validate($form, &$form_state) {
$form_state["values"]["some_field"] = some_value;
}
the $form_state["values"] variable is not available in my form definition function - mymodule_someform($form, &$form_state)
Any ideas?
Just use the managed_file type, it'll do it for you:
$form['my_file_field'] = array(
'#type' => 'managed_file',
'#title' => 'File',
'#upload_location' => 'public://my-folder/'
);
And then in your submit handler:
// Load the file via file.fid.
$file = file_load($form_state['values']['my_file_field']);
// Change status to permanent.
$file->status = FILE_STATUS_PERMANENT;
// Save.
file_save($file);
If the validation fails and the user leaves the form, the file will be automatically deleted a few hours later (as all files in the file_managed table without FILE_STATUS_PERMANENT are). If the validation doesn't fail, the submit handler will be run and the file will be marked as permanent in the system.
Admin form example for others who may be looking:
function example_admin_form(){
$form = array();
$form['image'] = array(
'#type' => 'managed_file',
'#name' => 'image',
'#title' => t('upload your image here!'),
'#default_value' => variable_get('image', ''),
'#description' => t("Here you can upload an image"),
'#progress_indicator' => 'bar',
'#upload_location' => 'public://my_images/'
);
// Add your submit function to the #submit array
$form['#submit'][] = 'example_admin_form_submit';
return system_settings_form($form);
}
function example_admin_form_submit($form, &$form_state){
// Load the file
$file = file_load($form_state['values']['image']);
// Change status to permanent.
$file->status = FILE_STATUS_PERMANENT;
// Save.
file_save($file);
}