Allow filtering of a fields default value.

Author: polevaultweb

includes/wpum-forms/class-wpum-form-registration.php

@@ -650,7 +650,7 @@ public function render_registration_form_fields( $field, $key, $fields ) {
 				return;
 			}
 
-			WPUM()->templates->set_template_data( [ 'field' => $field, 'key' => $key ] )
+			WPUM()->templates->set_template_data( [ 'field' => $field, 'key' => $key, 'form_id' => $this->form_id ] )
 			                 ->get_template_part( 'forms/form-registration-fields', 'field' );
 		}
 	}

templates/forms/form-registration-fields.php

@@ -28,6 +28,8 @@
 			$field['value'] = ! empty( $_GET[ $query_var ] ) ? wp_unslash( sanitize_text_field( $_GET[ $query_var ] ) ) : '';
 		}
 	}
+
+	$field['value'] = apply_filters( 'wpum_registration_form_field_default', $field['value'], $field, $key, $data->form_id );
 }
 ?>