: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
* Ensure that Recaptcha field array structure is correct
* @param array $fieldBeforeFilters
protected static function ensureRecaptchaFieldStructureValidity(array $field): array
// initialize return value to incoming value
// Hide the label on invisible reCAPTCHA fields
'recaptcha' === $field['settings']['type']
&& isset($field['settings']['size'])
&& 'invisible' === $field['settings']['size']) {
$return['settings']['label_pos'] = 'hidden';
* Determine currency symbol
* @param array $currencySymbolLookup Currency symbol lookups
* @param string $currency
protected static function getCurrencySymbol($currencySymbolLookup, $currency): string
if(!is_string($currency)){
$return = isset( $currencySymbolLookup[ $currency ] ) ? $currencySymbolLookup[ $currency ] : '';
public static function checkRepeaterChildType($field, $type)
if($field["settings"]["type"] === "repeater" && !empty($field["settings"]["fields"])){
foreach($field["settings"]["fields"] as $child){
array_push( $return, isset( $child[ 'type' ] ) && $type === $child[ 'type' ] );
return in_array(true, $return, true);
public static function checkRepeaterChildSetting($field, $setting, $value)
if($field["settings"]["type"] === "repeater" && !empty($field["settings"]["fields"])){
foreach($field["settings"]["fields"] as $child){
array_push( $return, isset( $child[ $setting ] ) && $value === $child[ $setting ] );
array_push( $return, isset( $child[ $setting ] ) && $child[ $setting ] );
return in_array(true, $return, true);
public static function localize_preview( $form_id )
$capability = apply_filters( 'ninja_forms_display_test_values_capabilities', 'read' );
if( isset( $_GET[ 'ninja_forms_test_values' ] ) && current_user_can( $capability ) ){
self::$use_test_values = TRUE;
add_action( 'wp_footer', 'NF_Display_Render::output_templates', 9999 );
$form = get_user_option( 'nf_form_preview_' . $form_id );
self::localize( $form_id );
if( isset( $form[ 'settings' ][ 'logged_in' ] ) && $form[ 'settings' ][ 'logged_in' ] && ! is_user_logged_in() ){
echo do_shortcode( $form[ 'settings' ][ 'not_logged_in_msg' ]);
$form[ 'settings' ] = array_merge( Ninja_Forms::config( 'i18nFrontEnd' ), $form[ 'settings' ] );
$form[ 'settings' ] = apply_filters( 'ninja_forms_display_form_settings', $form[ 'settings' ], $form_id );
// Remove the embed_form setting to avoid pagebuilder conflicts.
$form[ 'settings' ][ 'embed_form' ] = '';
$form[ 'settings' ][ 'is_preview' ] = TRUE;
$currency = ( isset( $form[ 'settings' ][ 'currency' ] ) && $form[ 'settings' ][ 'currency' ] ) ? $form[ 'settings' ][ 'currency' ] : Ninja_Forms()->get_setting( 'currency' ) ;
$currencySymbolLookup = Ninja_Forms::config( 'CurrencySymbol' );
$currencySymbol = ( isset( $currencySymbolLookup[ $currency ] ) ) ? $currencySymbolLookup[ $currency ] : '';
$form[ 'settings' ][ 'currency_symbol' ] =$currencySymbol;
$before_form = apply_filters( 'ninja_forms_display_before_form', '', $form_id, TRUE );
$form[ 'settings' ][ 'beforeForm'] = $before_form;
$before_fields = apply_filters( 'ninja_forms_display_before_fields', '', $form_id, TRUE );
$form[ 'settings' ][ 'beforeFields'] = $before_fields;
$after_fields = apply_filters( 'ninja_forms_display_after_fields', '', $form_id, TRUE );
$form[ 'settings' ][ 'afterFields'] = $after_fields;
$after_form = apply_filters( 'ninja_forms_display_after_form', '', $form_id, TRUE );
$form[ 'settings' ][ 'afterForm'] = $after_form;
if( empty( $form['fields'] ) ){
echo esc_html__( 'No Fields Found.', 'ninja-forms' );
foreach ($form['fields'] as $field_id => $field) {
$field_type = $field['settings']['type'];
// Scrub any values that might be stored in data. Defaults will set these later.
$field['settings']['value'] = '';
if( ! isset( Ninja_Forms()->fields[ $field_type ] ) ) continue;
if( ! apply_filters( 'ninja_forms_preview_display_type_' . $field_type, TRUE ) ) continue;
if( ! apply_filters( 'ninja_forms_preview_display_field', $field ) ) continue;
$field['settings']['id'] = $field_id;
$field = apply_filters('ninja_forms_localize_fields_preview', $field);
$field = apply_filters('ninja_forms_localize_field_' . $field_type . '_preview', $field);
$display_before = apply_filters( 'ninja_forms_display_before_field_type_' . $field['settings'][ 'type' ], '' );
$display_before = apply_filters( 'ninja_forms_display_before_field_key_' . $field['settings'][ 'key' ], $display_before );
$field['settings'][ 'beforeField' ] = $display_before;
$display_after = apply_filters( 'ninja_forms_display_after_field_type_' . $field['settings'][ 'type' ], '' );
$display_after = apply_filters( 'ninja_forms_display_after_field_key_' . $field['settings'][ 'key' ], $display_after );
$field['settings'][ 'afterField' ] = $display_after;
foreach ($field['settings'] as $key => $setting) {
if (is_numeric($setting)) $field['settings'][$key] = floatval($setting);
if( ! isset( $field['settings'][ 'label_pos' ] ) || 'default' == $field['settings'][ 'label_pos' ] ){
if( isset( $form[ 'settings' ][ 'default_label_pos' ] ) ) {
$field['settings'][ 'label_pos' ] = $form[ 'settings' ][ 'default_label_pos' ];
$field_class = Ninja_Forms()->fields[$field_type];
$templates = $field_class->get_templates();
if (!array($templates)) {
$templates = array($templates);
foreach ($templates as $template) {
self::load_template('fields-' . $template);
if (self::$use_test_values) {
$field['settings']['value'] = $field_class->get_test_value();
$field[ 'settings' ][ 'parentType' ] = $field_class->get_parent_type();
if( 'list' == $field[ 'settings' ][ 'parentType' ] && isset( $field['settings'][ 'options' ] ) && is_array( $field['settings'][ 'options' ] ) ){
$field['settings'][ 'options' ] = apply_filters( 'ninja_forms_render_options', $field['settings'][ 'options' ], $field['settings'] );
$field['settings'][ 'options' ] = apply_filters( 'ninja_forms_render_options_' . $field['settings'][ 'type' ], $field['settings'][ 'options' ], $field['settings'] );
$default_value = ( isset( $field[ 'settings' ][ 'default' ] ) ) ? $field[ 'settings' ][ 'default' ] : null;
$default_value = apply_filters( 'ninja_forms_render_default_value', $default_value, $field_type, $field[ 'settings' ]);
$default_value = preg_replace( '/{.*}/', '', $default_value );
$field['settings']['value'] = $default_value;
if( ! is_array( $default_value ) ) {
do_shortcode( $field['settings']['value'] );
$field['settings']['value'] = do_shortcode( $field['settings']['value'] );
$fieldType = $field['settings']['type'];
if(in_array($fieldType,['shipping','product','total'])){
$field = self::ensureProductRelatedCostPreviewFormats($field, $currencySymbol);
$field['settings']['element_templates'] = $templates;
$field['settings']['old_classname'] = $field_class->get_old_classname();
$field['settings']['wrap_template'] = $field_class->get_wrap_template();
$fields[] = apply_filters( 'ninja_forms_localize_field_settings_' . $field_type, $field['settings'], $form );
do_action( 'ninja_forms_before_container_preview', $form_id, $form[ 'settings' ], $fields );
Ninja_Forms::template( 'display-form-container.html.php', compact( 'form_id' ) );
self::transformInlineVars($fields, $form_id, $form[ 'settings' ]);
self::enqueue_scripts( $form_id, true );
* Set root element that will insert the WP element
public static function localize_iframe( $form_id )
echo "<div id='nf_form_iframe_" . $form_id . "'></div>";
self::enqueue_iframe_scripts( $form_id );
* Enqueue scripts and localize data needed to insert the iFrame
public static function enqueue_iframe_scripts( $form_id ) {
//Get Dependencies and Version from build asset.php generated by wp-scripts
if( file_exists( Ninja_Forms::$dir . "build/displayFrame.asset.php" ) ){
$asset_php = include( Ninja_Forms::$dir . "build/displayFrame.asset.php" );
$dashboard_asset_php["dependencies"] = array_merge( $dashboard_asset_php["dependencies"], $asset_php["dependencies"]);
$dashboard_asset_php["version"] = $asset_php["version"];
//Register displayFrame script
wp_register_script( 'ninja_forms_form_iframe', Ninja_Forms::$url . 'build/displayFrame.js', $dashboard_asset_php["dependencies"], $dashboard_asset_php["version"], false );
wp_enqueue_script( 'ninja_forms_form_iframe' );
//Set parameters needed in the script
wp_localize_script('ninja_forms_form_iframe', 'ninja_forms_form_iframe_data', [
'homeUrl' => esc_url_raw( home_url() ),
'previewToken' => wp_create_nonce('nf_iframe' ),
protected static function ensureProductRelatedCostPreviewFormats(array $field, string $currencySymbol): array
// TODO: Find a better way to do this.
if ('shipping' == $field['settings']['type']) {
$field['settings']['shipping_cost'] = static::decodeNumberByLocale($field['settings']['shipping_cost']);
$field['settings']['shipping_cost'] = str_replace($currencySymbol, '', $field['settings']['shipping_cost']);
$field['settings']['shipping_cost'] = number_format((float)$field['settings']['shipping_cost'], 2);
} elseif ('product' == $field['settings']['type']) {
// TODO: Does the currency marker need to stripped here?
$field['settings']['product_price'] = static::decodeNumberByLocale($field['settings']['product_price']);
$field['settings']['product_price'] = (float)str_replace($currencySymbol, '', $field['settings']['product_price']);
$field['settings']['product_price'] = number_format((float)$field['settings']['product_price'], 2);
} elseif ('total' == $field['settings']['type']) {
if (!isset($field['settings']['value'])) $field['settings']['value'] = 0;
$field['settings']['value'] = number_format((float)$field['settings']['value'], 2);
* Decode a number by locale into string
protected static function decodeNumberByLocale( $incoming ): string
$localeNumberFormatting= NF_Handlers_LocaleNumberFormatting::create();
$return = $localeNumberFormatting->locale_decode_number($incoming);
public static function enqueue_scripts( $form_id, $is_preview = false )
$ver = Ninja_Forms::VERSION;
$js_dir = Ninja_Forms::$url . 'assets/js/min/';
$css_dir = Ninja_Forms::$url . 'assets/css/';
self::enqueue_styles_display( $css_dir );
if( $is_preview || in_array( $form_id, self::$form_uses_recaptcha ) ) {
$recaptcha_lang = Ninja_Forms()->get_setting('recaptcha_lang');
wp_enqueue_script('nf-google-recaptcha', 'https://www.google.com/recaptcha/api.js?hl=' . $recaptcha_lang . '&onload=nfRenderRecaptcha&render=explicit', array( 'jquery', 'nf-front-end-deps' ), $ver, TRUE );
if( $is_preview || in_array( $form_id, self::$form_uses_datepicker ) ) {
wp_enqueue_style( 'nf-flatpickr', $css_dir . 'flatpickr.css', $ver );
wp_enqueue_script('nf-datepicker', $js_dir . 'datepicker.min.js', array( 'jquery', 'nf-front-end' ), $ver );
if( $is_preview || in_array( $form_id, self::$form_uses_inputmask ) ) {
wp_enqueue_script('nf-front-end--inputmask', $js_dir . 'front-end--inputmask.min.js', array( 'jquery' ), $ver );
if( $is_preview || in_array( $form_id, self::$form_uses_currencymask ) ) {
wp_enqueue_script('nf-front-end--currencymask', $js_dir . 'autonumeric.min.js', array( 'jquery' ), $ver );
if( $is_preview || in_array( $form_id, self::$form_uses_rte ) ) {
if( $is_preview || in_array( $form_id, self::$form_uses_textarea_media ) ) {
wp_enqueue_style( 'summernote', $css_dir . 'summernote.css' , $ver );
wp_enqueue_style( 'codemirror', $css_dir . 'codemirror.css' , $ver );
wp_enqueue_style( 'codemirror-monokai', $css_dir . 'monokai-theme.css', $ver );
wp_enqueue_script('nf-front-end--rte', $js_dir . 'front-end--rte.min.js', array( 'jquery' ), $ver );
if( $is_preview || in_array( $form_id, self::$form_uses_helptext ) ) {
wp_enqueue_style( 'jBox', $css_dir . 'jBox.css', $ver );
wp_enqueue_script('nf-jBox', $js_dir . 'jBox.min.js', array( 'jquery' ), $ver );
if( $is_preview || in_array( $form_id, self::$form_uses_starrating ) ) {
wp_enqueue_style( 'rating', $css_dir . 'rating.css', Ninja_Forms::VERSION );
wp_enqueue_script('nf-front-end--starrating', $js_dir . 'front-end--starrating.min.js', array( 'jquery' ), $ver );
wp_enqueue_script( 'nf-front-end-deps', $js_dir . 'front-end-deps.js', array( 'jquery', 'backbone' ), $ver );
wp_enqueue_script( 'nf-front-end', $js_dir . 'front-end.js', array( 'nf-front-end-deps' ), $ver );
wp_localize_script( 'nf-front-end', 'nfi18n', Ninja_Forms::config( 'i18nFrontEnd' ) );
$data = apply_filters( 'ninja_forms_render_localize_script_data', array(
'adminAjax' => admin_url( 'admin-ajax.php' ),
'ajaxNonce' => wp_create_nonce( 'ninja_forms_display_nonce' ),
'requireBaseUrl' => Ninja_Forms::$url . 'assets/js/',
'use_merge_tags' => array(),
'opinionated_styles' => Ninja_Forms()->get_setting( 'opinionated_styles' ),
'filter_esc_status' => json_encode( WPN_Helper::maybe_disallow_unfiltered_html_for_escaping() ),
'nf_consent_status_response' => []
foreach( Ninja_Forms()->fields as $field ){
foreach( $field->use_merge_tags() as $merge_tag ){
$data[ 'use_merge_tags' ][ $merge_tag ][ $field->get_type() ] = $field->get_type();
wp_localize_script( 'nf-front-end', 'nfFrontEnd', $data );
// !!Todoed!! moved inline JS to data
wp_localize_script( 'nf-front-end', 'nfInlineVars', self::$inline_vars_recorded );
do_action( 'ninja_forms_enqueue_scripts', array( 'form_id' => $form_id ) );
do_action( 'nf_display_enqueue_scripts' );
* Enqueue NF frontend basic display styles.
public static function enqueue_styles_display( $css_dir ) {
switch( Ninja_Forms()->get_setting( 'opinionated_styles' ) ) {
wp_enqueue_style( 'nf-display', $css_dir . 'display-opinions-light.css', array( 'dashicons' ) );
wp_enqueue_style( 'nf-font-awesome', $css_dir . 'font-awesome.min.css' );
wp_enqueue_style( 'nf-display', $css_dir . 'display-opinions-dark.css', array( 'dashicons' ) );
wp_enqueue_style( 'nf-font-awesome', $css_dir . 'font-awesome.min.css' );
wp_enqueue_style( 'nf-display', $css_dir . 'display-structure.css', array( 'dashicons' ) );
public static function load_template( $file_name = '' )
if( ! $file_name ) return;
if( self::is_template_loaded( $file_name ) ) return;
self::$loaded_templates[] = $file_name;
public static function output_templates()
// Build File Path Hierarchy
$file_paths = apply_filters( 'ninja_forms_field_template_file_paths', array(
get_stylesheet_directory() . '/ninja-forms/templates/',
$file_paths[] = Ninja_Forms::$dir . 'includes/Templates/';
// Search for and Output File Templates
foreach( self::$loaded_templates as $file_name ) {
foreach( $file_paths as $path ){
if( file_exists( $path . "$file_name.html" ) ){
echo file_get_contents( $path . "$file_name.html" );
// Action to Output Custom Templates
do_action( 'ninja_forms_output_templates' );
protected static function is_template_loaded( $template_name )
return ( in_array( $template_name, self::$loaded_templates ) ) ? TRUE : FALSE ;
} // End Class NF_Display_Render