Preview.php
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<?php if ( ! defined( 'ABSPATH' ) ) exit;
class NF_AJAX_Controllers_Preview extends NF_Abstracts_Controller
{
private static $transient_prefix = 'nf_form_preview_';
public function __construct()
{
// Ajax call handled in 'update' in this file
add_action( 'wp_ajax_nf_preview_update', array( $this, 'update' ) );
add_filter( 'ninja_forms_run_action_settings', array( $this, 'filter_action_settings' ), 10, 4 );
}
public function update()
{
// Does the current user have admin privileges
if (!current_user_can(apply_filters('ninja_forms_admin_all_forms_capabilities', 'manage_options'))) {
$this->_data['errors'] = esc_html__('Access denied. You must have admin privileges to perform this action.', 'ninja-forms');
$this->_respond();
}
check_ajax_referer( 'ninja_forms_builder_nonce', 'security' );
$form = json_decode( stripslashes( $_POST['form'] ), ARRAY_A );
$form_id = $form[ 'id' ];
$form_data = $this->get_form_data( $form_id );
/*
* Form Settings
*/
if( isset( $form[ 'settings' ] ) && is_array( $form[ 'settings' ] ) ) {
$old_settings = $form_data[ 'settings' ];
$form_data[ 'settings' ] = array_merge( $old_settings, $form[ 'settings' ] );
}
/*
* Fields and Field Settings
*/
if( isset( $form[ 'fields' ] ) && is_array( $form[ 'fields' ] ) ) {
foreach( $form[ 'fields' ] as $field ){
$id = $field[ 'id' ];
$old_settings = ( isset( $form_data[ 'fields' ][ $id ][ 'settings' ] ) ) ? $form_data[ 'fields' ][ $id ][ 'settings' ] : array();
$new_settings = array_merge( $old_settings, $field[ 'settings' ] );
$form_data[ 'fields' ][ $id ][ 'settings' ] = $new_settings;
}
}
if( isset( $form[ 'deleted_fields' ] ) ) {
foreach( $form[ 'deleted_fields' ] as $deleted_field ){
unset( $form_data[ 'fields' ][ $deleted_field ] );
}
}
/*
* Actions and Action Settings
*/
if( isset( $form[ 'actions' ] ) && is_array( $form[ 'actions' ] ) ) {
foreach( $form[ 'actions' ] as $action ){
$id = $action[ 'id' ];
if( isset( $form[ 'deleted_actions' ][ $id ] ) ) {
unset( $form_data[ 'actions' ][ $id ] );
continue;
}
$old_settings = ( isset ( $form_data[ 'actions' ][ $id ][ 'settings' ] ) ) ? $form_data[ 'actions' ][ $id ][ 'settings' ]: array();
$new_settings = array_merge( $old_settings, $action[ 'settings' ] );
$form_data[ 'actions' ][ $id ][ 'settings' ] = $new_settings;
}
}
if( isset( $form[ 'deleted_actions' ] ) ) {
foreach( $form[ 'deleted_actions' ] as $deleted_action ){
unset( $form_data[ 'actions' ][ $deleted_action ] );
}
}
$this->update_form_data( $form_data );
$this->_data['form'] = $form_data;
do_action( 'ninja_forms_save_form_preview', $form_id );
$this->_respond();
}
public function filter_action_settings( $action_settings, $form_id, $action_id, $form_settings )
{
if( ! isset( $form_settings[ 'is_preview' ] ) ) return $action_settings;
$form_data = $this->get_form_data( $form_id );
if( isset( $form_data[ 'actions' ][ $action_id ] ) ){
$settings = $form_data['actions'][$action_id]['settings'];
$action_settings = array_merge( $action_settings, $settings );
}
return $action_settings;
}
private function get_form_data( $form_id )
{
$form_data = get_user_option( self::$transient_prefix . $form_id, FALSE );
if( ! $form_data ){
if( is_string( $form_id ) ){
$form = Ninja_Forms()->form()->get();
$form_data['id'] = $form_id;
$form_data[ 'settings' ] = array();
$form_data[ 'fields' ] = array();
$form_data[ 'actions' ] = array();
} else {
$form = Ninja_Forms()->form($form_id)->get();
$form_data['id'] = $form_id;
$form_data[ 'settings' ] = $form->get_settings();
$fields = Ninja_Forms()->form( $form_id )->get_fields();
foreach( $fields as $field ){
$field_id = $field->get_id();
$form_data[ 'fields' ][ $field_id ][ 'settings' ] = $field->get_settings();
}
$actions = Ninja_Forms()->form( $form_id )->get_actions();
foreach( $actions as $action ){
$action_id = $action->get_id();
$form_data[ 'actions' ][ $action_id ][ 'settings' ] = $action->get_settings();
}
}
}
return $form_data;
}
private function update_form_data( $form_data )
{
$update = update_user_option( get_current_user_id(), self::$transient_prefix . $form_data['id'], $form_data );
$this->_data[ 'updated' ] = $update;
if( ! $update ){
$this->_errors[ 'Form Preview Not Updated' ] = $form_data;
$this->_errors[ 'Current User' ] = get_current_user_id();
$this->_errors[ 'Option' ] = self::$transient_prefix . $form_data['id'];
}
}
}