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<?php
add_action( 'init', 'ninja_forms_preview_form' );
function ninja_forms_preview_form() {
global $ninja_forms_append_page_form_id;
if( isset( $_REQUEST['form_id'] ) AND isset($_REQUEST['preview']) ) { //I
$form_id = absint( $_REQUEST['form_id'] );
} else {
$form_id = '';
}
$form_data = ninja_forms_get_form_by_id( $form_id );
//if( '' != $form_data['data'] ) {
if(isset($form_data['data']) AND !empty($form_data['data'])){ // In order to prevent notices and errors, it's best to use these two checks when you are evaluating arrays.
$ninja_forms_append_page_form_id = array($form_id);
add_filter( 'the_content', 'ninja_forms_append_to_page', 9999 );
}
}
function ninja_forms_preview_link( $form_id = '', $echo = true ) {
if( $form_id == '' ){
if( isset( $_REQUEST['form_id'] ) ){
$form_id = absint( $_REQUEST['form_id'] );
}else{
$form_id = '';
}
}
$base = home_url();
$form_data = ninja_forms_get_form_by_id( $form_id );
//if( '' == $form_data['data']['append_page'] ) {
if(!isset($form_data['data']['append_page']) OR empty($form_data['data']['append_page'])){ // See the comment above about this check. !empty will ensure that it's not either empty quotes or null.
$opt = nf_get_settings();
if ( isset ( $opt['preview_id'] ) ) {
$page_id = $opt['preview_id'];
} else {
$page_id = '';
}
} else {
$page_id = $form_data['data']['append_page'];
}
if( $echo ){
$preview_link = '<a target="_blank" href="' . $base . '/?page_id=' . $page_id . '&preview=true&form_id=' . $form_id . '">' . __( 'Preview Form', 'ninja-forms' ) . '</a>';
}else{
$preview_link = $base . '/?page_id=' . $page_id . '&preview=true&form_id=' . $form_id;
}
return $preview_link;
}
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