I've adapted the code you provided and turned it into a simple upload function. Now I've seen it laid out, it's pretty obvious this was the way to go, but as I said in the initial post, I was confused about the functionality of the image generic field.
So what I've done is leave the hook call in with the rest of my global settings cred_submit_complete calls and then simply called the image upload function, which I have expanded with some simple validation and made it so that the field passing the image to the $_FILES function is a variable that is passed to the function, so that it can be reused elsewhere on the site if need be.
Here's what I've come up with (please note, part of the first section has been edited to show only the relevant bits):
In the Toolset Custom Code module:
function edit_global_settings( $post_id, $form_data ){
//If is the Edit Global Logo form
if( $form_data['id'] == 2779 ) {
//Get uploaded image
$new_image = image_upload( 'global-logo' );
//Update stored global logo
update_post_meta( global_settings_id(), 'wpcf-global-logo', $new_image['new_image_url'] );
}
add_action('cred_submit_complete', 'edit_global_settings', 10, 2);
In functions.php:
/*** Function to upload images to the media library without front end access ***/
/* Requires the name of the upload field to be passed to it */
function image_upload( $upload_field ){
//Load WordPress environmet
require( dirname(__FILE__) . '/../../../wp-load.php' );
//Load the wp_handle_upload() function
require_once( ABSPATH . 'wp-admin/includes/file.php' );
//Array of all excepted file types in lower case
$accept = [ "jpeg", "jpg", "gif", "png", "heic" ];
//Get uploaded file extension
$up_ext = strtolower( pathinfo( $_FILES[$upload_field]['type'], PATHINFO_EXTENSION ) );
//Check a file has been selected
if( empty( $_FILES[ $upload_field ] ) ) {
wp_die( 'No files selected.' );
//Check if the file format is an acceptable image type
} elseif( !in_array( $up_ext, $accept ) ) {
wp_die( 'Incorrect file format. Please only use jpg, gif or png files.');
} elseif( $_FILES[$uploaded_field]['size'] >= 2097152 ) {
wp_die( 'File is too large. Please select a file less than 2MB.' );
}
//Upload the file
$upload = wp_handle_upload(
$_FILES[ $upload_field ],
array( 'test_form' => false )
);
//Report any upload errors if they occur
if( !empty( $upload[ 'error' ] ) ) {
wp_die( $upload[ 'error' ] );
}
//Add image to media library
$attachment_id = wp_insert_attachment(
array(
'guid' => $upload[ 'url' ],
'post_mime_type' => $upload[ 'type' ],
'post_title' => basename( $upload[ 'file' ] ),
'post_content' => '',
'post_status' => 'inherit',
),
$upload[ 'file' ]
);
//Report any attachment errors if they occur
if( is_wp_error( $attachment_id ) || ! $attachment_id ) {
wp_die( 'Upload error.' );
}
//Load the wp_update_attachment_metadata() function
require_once( ABSPATH . 'wp-admin/includes/image.php' );
//Update metadata and regenerate image sizes
wp_update_attachment_metadata(
$attachment_id,
wp_generate_attachment_metadata( $attachment_id, $upload[ 'file' ] )
);
//Create a return array for the image ID and URL
$new_image = array(
'new_image_id' => $attachment_id,
'new_image_url' => wp_get_attachment_url( $attachment_id )
);
return $new_image;
}
I know it's not perfect, and I'll probably redo the validation at some point to avoid using wp_die(), and depending on how usage goes, I might add the automatic deletion of the previous image, or provide some separate functionality for doing this. Either way, we've resolved the confusion here, so many thanks!
