Formbuilder Handler.php

gistfile1.php

<?php

$config->form = array(
    // Name of the formbuilder form
    'formName' => $form_name,
    // Redirect to here after successful submit.
    'successUrl' => $success_url,
    // Global error message after faulty submit.
    'errorMessage' => $error_message,
    );


if ($config->form['formName']) {

    /**
     * Modify settings
     *
     * We use $config as a mediator so probably no changes are needed here.
     * More settings found here: /site/modules/FormBuilder/FormBuilderProcessor.php
     *
     * @param HookEvent $event
     */
    $forms->addHookBefore('FormBuilderProcessor::render', function(HookEvent $event) {
        // (object) FormBuilderProcessor
        $processor = $event->object;
        // Configuration array
        $settings = wire('config')->form;
        // Name of the form
        if($processor->formName != $settings['formName']) return;
        // Shown after failed submit.
        $processor->set('errorMessage', $settings['errorMessage']);
        // Redirect after succesfull submit.
        $processor->set('successUrl', $settings['successUrl']);
        // Submit the form somewhere else. (disabling all other options)
        $processor->set('saveFlags', FormBuilderProcessor::saveFlagExternal);
    });

    /**
     * Modify the field before render
     *
     * @param HookEvent $event
     */
    $forms->addHookBefore('Inputfield::render', function(HookEvent $event) {
        $form = $event->object;
        if($form->name != wire('config')->form['formName']) return;
        /**
         * Example usage
         *
         * $field = $form->get('password');
         * $field->set('type', 'password');
         */        
    });

    /**
     * After the input is processed by ProcessWire
     * 
     * @example See examples at the top of this file
     * @param HookEvent $event
     */
    $forms->addHookAfter('InputfieldForm::processInput', function(HookEvent $event) {
        $form = $event->object;
        if($form->name != wire('config')->form['formName']) return;
        /**
         * Example usage
         *
         * $field = $form->get('username');
         * $field->value = 'set a value';
         * $field->getErrors(true);
         * $field->error("Set an error");
         */
    });

    $form = $forms->render($config->form['formName']);
}