Add filters to edit uploaded file name and path (#134)

Author: luizbills

README.md

@@ -198,6 +198,25 @@ add_filter('wplf_dynamic_values', function($values) {
 // <input type="text" placeholder="%SOMETHING%" name="something">
 ```
 
+
+### Filter: wplf_uploaded_file_name
+If you choose to not add uploaded files to the media library, you can change the file upload name.
+
+```php
+add_filter('wplf_uploaded_file_name', function($name, $file, $id) {
+  return "my_".$name;
+}, 10, 3);
+```
+
+### Filter: wplf_uploaded_file_path
+If you choose to not add uploaded files to the media library, you can change the file upload path.
+
+```php
+add_filter('wplf_uploaded_file_path', function($name, $file, $id) {
+  return $name.".userfile";
+}, 10, 3);
+```
+
 ## Plugins
 1.5 exposes a new function, `wplf()`. It simply returns the class instance of WP Libre Form.
 

inc/wplf-ajax.php

@@ -17,10 +17,10 @@ function wplf_ajax_submit_handler() {
   // @see: wplf-form-validation.php
   $return = apply_filters( 'wplf_validate_submission', $return );
 
-  if ( $return->ok ) {
-    // form existence has already been validated via filters
-    $form = get_post( intval( $_POST['_form_id'] ) );
+  // form existence has already been validated via filters
+  $form = get_post( intval( $_POST['_form_id'] ) );
 
+  if ( $return->ok ) {
     // form-specific validation
     $return->slug = $form->post_name;
     $return->title = $form->post_title;
@@ -93,10 +93,16 @@ function wplf_ajax_submit_handler() {
           add_post_meta( $post_id, $key . '_attachment', $attach_id );
         }
       } else {
-        $name = 'lf_' . date( 'ymdhs' ) . '-' . $counter . '-' . sanitize_file_name( $file['name'] );
+        $file['field_name'] = $key;
+
+        $default_file_name = 'lf_' . date( 'ymdhs' ) . '-' . $counter . '-' . $file['name'];
+        $file_name = sanitize_file_name( apply_filters( 'wplf_uploaded_file_name', $default_file_name, $file, $post_id ) );
+
+        $file_path = $uploads_path['path'] . '/' . $file_name;
+        $file_path = apply_filters( 'wplf_uploaded_file_path', $file_path, $file, $post_id );
 
-        move_uploaded_file( $file['tmp_name'], $uploads_path['path'] . '/' . $name );
-        add_post_meta( $post_id, $key . '_attachment', $uploads_path['url'] . '/' . $name );
+        move_uploaded_file( $file['tmp_name'], $file_path );
+        add_post_meta( $post_id, $key . '_attachment', $file_path );
         $counter++;
       }
     }