added Form::initialize() for standalone forms

Author: dg

src/Forms/Form.php

@@ -103,6 +103,9 @@ class Form extends Container implements Nette\HtmlStringable
 	/** @var bool */
 	protected $crossOrigin = false;
 
+	/** @var Nette\Http\IRequest */
+	private static $defaultHttpRequest;
+
 	/** @var mixed or null meaning: not detected yet */
 	private $submittedBy;
 
@@ -666,6 +669,32 @@ public function getToggles(): array
 	/********************* backend ****************d*g**/
 
 
+	/**
+	 * Initialize standalone forms.
+	 */
+	public static function initialize(bool $reinit = false): void
+	{
+		if ($reinit) {
+			self::$defaultHttpRequest = null;
+			return;
+		} elseif (self::$defaultHttpRequest) {
+			return;
+		}
+
+		self::$defaultHttpRequest = (new Nette\Http\RequestFactory)->fromGlobals();
+
+		if (PHP_SAPI !== 'cli') {
+			if (headers_sent($file, $line)) {
+				throw new Nette\InvalidStateException(
+					'Create a form or call Nette\Forms\Form::initialize() before the headers are sent to initialize CSRF protection.'
+					. ($file ? " (output started at $file:$line)" : '') . '. '
+				);
+			}
+			Nette\Http\Helpers::initCookie(self::$defaultHttpRequest, new Nette\Http\Response);
+		}
+	}
+
+
 	/** @internal */
 	public function setHttpRequest(Nette\Http\IRequest $request)
 	{
@@ -676,9 +705,8 @@ public function setHttpRequest(Nette\Http\IRequest $request)
 	private function getHttpRequest(): Nette\Http\IRequest
 	{
 		if (!$this->httpRequest) {
-			$factory = new Nette\Http\RequestFactory;
-			$this->httpRequest = $factory->createHttpRequest();
-			Nette\Http\Helpers::initCookie($this->httpRequest, new Nette\Http\Response);
+			self::initialize();
+			$this->httpRequest = self::$defaultHttpRequest;
 		}
 		return $this->httpRequest;
 	}

tests/Forms/Container.values.ArrayHash.phpt

@@ -24,6 +24,8 @@ $_POST = [
 
 function createForm(): Form
 {
+	Form::initialize(true);
+
 	$form = new Form;
 	$form->addText('title');
 

tests/Forms/Container.values.array.phpt

@@ -24,6 +24,8 @@ $_POST = [
 
 function createForm(): Form
 {
+	Form::initialize(true);
+
 	$form = new Form;
 	$form->addText('title');
 

tests/Forms/Container.values.mapping.phpt

@@ -64,6 +64,8 @@ $_POST = [
 
 function createForm(): Form
 {
+	Form::initialize(true);
+
 	$form = new Form;
 	$form->addText('title');
 

tests/Forms/Controls.BaseControl.phpt

@@ -14,6 +14,11 @@ use Tester\Assert;
 require __DIR__ . '/../bootstrap.php';
 
 
+before(function () {
+	Form::initialize(true);
+});
+
+
 test('error handling', function () {
 	$form = new Form;
 	$input = $form->addText('text')

tests/Forms/Controls.Button.loadData.phpt

@@ -17,6 +17,7 @@ before(function () {
 	$_SERVER['REQUEST_METHOD'] = 'POST';
 	$_POST = $_FILES = [];
 	$_COOKIE[Nette\Http\Helpers::STRICT_COOKIE_NAME] = '1';
+	Form::initialize(true);
 });
 
 

tests/Forms/Controls.Checkbox.loadData.phpt

@@ -17,6 +17,7 @@ before(function () {
 	$_SERVER['REQUEST_METHOD'] = 'POST';
 	$_POST = $_FILES = [];
 	$_COOKIE[Nette\Http\Helpers::STRICT_COOKIE_NAME] = '1';
+	Form::initialize(true);
 });
 
 

tests/Forms/Controls.CheckboxList.loadData.phpt

@@ -19,6 +19,7 @@ before(function () {
 	$_SERVER['REQUEST_METHOD'] = 'POST';
 	$_POST = $_FILES = [];
 	$_COOKIE[Nette\Http\Helpers::STRICT_COOKIE_NAME] = '1';
+	Form::initialize(true);
 });
 
 

tests/Forms/Controls.ChoiceControl.loadData.phpt

@@ -23,6 +23,7 @@ before(function () {
 	$_SERVER['REQUEST_METHOD'] = 'POST';
 	$_POST = $_FILES = [];
 	$_COOKIE[Nette\Http\Helpers::STRICT_COOKIE_NAME] = '1';
+	Form::initialize(true);
 });
 
 

tests/Forms/Controls.HiddenField.loadData.phpt

@@ -17,6 +17,7 @@ before(function () {
 	$_SERVER['REQUEST_METHOD'] = 'POST';
 	$_POST = $_FILES = [];
 	$_COOKIE[Nette\Http\Helpers::STRICT_COOKIE_NAME] = '1';
+	Form::initialize(true);
 });