Init

app/modules/Admin/Sign/SignPresenter.php

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+<?php declare(strict_types = 1);
+
+namespace App\Modules\Admin\Sign;
+
+use App\Model\App;
+use App\Model\Exception\Runtime\AuthenticationException;
+use App\Modules\Admin\BaseAdminPresenter;
+use App\UI\Form\BaseForm;
+use App\UI\Form\FormFactory;
+use Nette\Application\UI\ComponentReflection;
+
+final class SignPresenter extends BaseAdminPresenter
+{
+
+	/** @var string @persistent */
+	public $backlink;
+
+	/** @var FormFactory @inject */
+	public $formFactory;
+
+	/**
+	 * @param ComponentReflection|mixed $element
+	 * @phpcsSuppress SlevomatCodingStandard.TypeHints.TypeHintDeclaration.MissingParameterTypeHint
+	 */
+	public function checkRequirements($element): void
+	{
+	}
+
+	public function actionIn(): void
+	{
+		if ($this->user->isLoggedIn()) {
+			$this->redirect(App::DESTINATION_AFTER_SIGN_IN);
+		}
+	}
+
+	public function actionOut(): void
+	{
+		if ($this->user->isLoggedIn()) {
+			$this->user->logout();
+			$this->flashSuccess('_front.sign.out.success');
+		}
+
+		$this->redirect(App::DESTINATION_AFTER_SIGN_OUT);
+	}
+
+	protected function createComponentLoginForm(): BaseForm
+	{
+		$form = $this->formFactory->forBackend();
+		$form->addEmail('email')
+			->setRequired(true);
+		$form->addPassword('password')
+			->setRequired(true);
+		$form->addCheckbox('remember')
+			->setDefaultValue(true);
+		$form->addSubmit('submit');
+		$form->onSuccess[] = [$this, 'processLoginForm'];
+
+		return $form;
+	}
+
+	public function processLoginForm(BaseForm $form): void
+	{
+		try {
+			$this->user->setExpiration($form->values->remember ? '14 days' : '20 minutes');
+			$this->user->login($form->values->email, $form->values->password);
+		} catch (AuthenticationException $e) {
+			$form->addError('Invalid username or password');
+
+			return;
+		}
+
+		$this->redirect(App::DESTINATION_AFTER_SIGN_IN);
+	}
+
+}

app/modules/Admin/Sign/templates/in.latte

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+{block #content}
+<form n:name="loginForm" class="form-signin">
+	<div class="text-center mb-4">
+		<img class="mb-4" src="https://avatars0.githubusercontent.com/u/99965?s=200&v=4" alt="" width="72" height="72">
+		<h1 class="h3 mb-3 font-weight-normal">Webapp Skeleton Admin</h1>
+	</div>
+
+	<div n:foreach="$form->errors as $error" class="alert alert-danger" role="alert">
+		{$error}
+	</div>
+
+	<div class="form-label-group">
+		<input type="email" n:name="email" class="form-control" placeholder="Email address" required autofocus>
+		<label n:name="email">Email address</label>
+	</div>
+
+	<div class="form-label-group">
+		<input type="password" n:name="password" class="form-control" placeholder="Password" required>
+		<label n:name="password">Password</label>
+	</div>
+
+	<div class="checkbox mb-3">
+		<label>
+			<input n:name="remember" type="checkbox"> Remember me
+		</label>
+	</div>
+	<button n:name="submit" class="btn btn-lg btn-primary btn-block">Sign in</button>
+	<p class="mt-5 mb-3 text-muted text-center">&copy; {=date('Y')}</p>
+</form>