README

Formerly contenir/formbuilder; the old package is abandoned in favour of this one.

Framework-agnostic form-builder engine for Contenir CMS.

It turns a runtime-editable form definition (sections, groups, rows and fields, usually stored in a database) into a working Laminas\Form\Form, validates submissions against it, and renders the markup:

Definitions. Immutable value objects describing a form, its layout, notifications and webhooks.
Field types. 17 built-in types behind a registry you can extend.
Validators. A small curated vocabulary mapped onto Laminas validators.
Conditional logic. Show/hide rules evaluated on the server (and mirrored by the client).
Submission. CSRF, a honeypot spam trap, conditional gating, optional file uploads through contenir/contenir-storage, and observers (registrars) that persist or forward the result.
Rendering. Framework-free HTML for single-page or stepped forms.
Merge tags. {field:name}, {form:title}, {entry:fields} and custom namespaces for notification templates and redirect URLs.

This is the pure-PHP core. It has no opinion about how definitions are loaded or how submissions are stored. contenir/contenir-formbuilder-laminas-mvc wires it into a laminas-mvc application.

Requirements

PHP 8.3, 8.4 or 8.5
laminas-form 3.20+, laminas-inputfilter, laminas-validator, laminas-filter
laminas-session (backs the CSRF token)
ext-curl for webhooks
Optional: contenir/contenir-storage for the file field type

Installation

composer require contenir/contenir-formbuilder

The 0.x releases, which support PHP 8.1, remain available from the 0.x branch and v0.* tags; see UPGRADE-2.0.md.

Usage

use Contenir\FormBuilder\Definition\FieldDefinition;
use Contenir\FormBuilder\Definition\FormDefinition;
use Contenir\FormBuilder\Definition\GroupDefinition;
use Contenir\FormBuilder\Definition\RowDefinition;
use Contenir\FormBuilder\Definition\SectionDefinition;
use Contenir\FormBuilder\FieldType\FieldTypeRegistry;
use Contenir\FormBuilder\Registrar\WebhookRegistrar;
use Contenir\FormBuilder\Render\FormMarkup;
use Contenir\FormBuilder\Service\FormBuilderService;
use Contenir\FormBuilder\Service\FormSubmissionService;
use Contenir\FormBuilder\Validator\ValidatorFactory;

$definition = new FormDefinition(
    id: 1,
    slug: 'contact',
    title: 'Contact us',
    submitLabel: 'Send',
    sections: [new SectionDefinition(id: 1, key: 'main', groups: [
        new GroupDefinition(id: 1, rows: [new RowDefinition(id: 1, fields: [
            new FieldDefinition(id: 1, type: 'text', name: 'name', label: 'Name', required: true),
            new FieldDefinition(id: 2, type: 'email', name: 'email', label: 'Email', required: true),
        ])]),
    ])],
);

$builder = new FormBuilderService(new FieldTypeRegistry(), new ValidatorFactory());

// GET: render the form
$form = $builder->build($definition);
echo (new FormMarkup())->render($definition, $form);

// POST: validate and dispatch
$service = new FormSubmissionService($builder);
$service->attach(new WebhookRegistrar($logger));
$result = $service->submit($definition, $_POST, $_FILES, ['ip' => $_SERVER['REMOTE_ADDR'] ?? null]);

if ($result->valid) {
    // $result->values, $result->entryId
} elseif ($result->isSpam) {
    // answer as if it succeeded
} else {
    echo (new FormMarkup())->render($definition, $result->form); // with errors
}

The full public API is described in docs/:

Page	Covers
Definitions	`FormDefinition`, sections, groups, rows, fields, validators, notifications, webhooks
Field types	The built-in types, `FieldTypeRegistry`, writing your own type
Validators	`ValidatorFactory` vocabulary and options
Conditional logic	`RuleEvaluator`, `ConditionalRulesParser`
Building and submitting	`FormBuilderService`, `FormSubmissionService`, `SubmissionResult`, `BuilderForm`, observers, uploads
Rendering	`FormMarkup`, `FormContentSanitizer`
Merge tags	`TokenReplacer`
Webhooks	`WebhookRegistrar`

Development

The QA toolchain is php-db/phpdb-qa-tools. Mago is a standalone binary, installed separately (brew install mago).

composer check             # everything below
composer cs-check          # mago format --check && mago lint
composer static-analysis   # mago analyze
composer test              # unit suite: no I/O, no session, no network
composer test-integration  # integration suite: in-memory session, temp files, a local HTTP server
composer test-coverage     # both suites, clover.xml for Codecov
composer mutation-test     # Infection over both suites (needs Xdebug or PCOV)

The webhook integration tests start PHP's built-in web server on a free loopback port.

License

MIT. See LICENSE.

contenir / contenir-formbuilder

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