structure-controllers.md


namespace app\controllers;

use Yii;
use app\models\Post;
use yii\web\Controller;
use yii\web\NotFoundHttpException;

class PostController extends Controller
{
    public function actionView($id)
    {
        $model = Post::findOne($id);
        if ($model === null) {
            throw new NotFoundHttpException;
        }

        return $this->render('view', [
            'model' => $model,
        ]);
    }

    public function actionCreate()
    {
        $model = new Post;

        if ($model->load(Yii::$app->request->post()) && $model->save()) {
            return $this->redirect(['view', 'id' => $model->id]);
        } else {
            return $this->render('create', [
                'model' => $model,
            ]);
        }
    }
}
ControllerID/ActionID
ModuleID/ControllerID/ActionID
namespace app\controllers;

use yii\web\Controller;

class SiteController extends Controller
{
}
[
    'controllerMap' => [
        // クラス名を使って "account" コントローラを宣言する
        'account' => 'app\controllers\UserController',

        // 構成情報配列を使って "article" コントローラを宣言する
        'article' => [
            'class' => 'app\controllers\PostController',
            'enableCsrfValidation' => false,
        ],
    ],
]
[
    'defaultRoute' => 'main',
]
namespace app\controllers;

use yii\web\Controller;

class SiteController extends Controller
{
    public function actionIndex()
    {
        return $this->render('index');
    }

    public function actionHelloWorld()
    {
        return 'Hello World';
    }
}
public function actions()
{
    return [
        // クラス名を使って "error" アクションを宣言する
        'error' => 'yii\web\ErrorAction',

        // 構成情報配列を使って "view" アクションを宣言する
        'view' => [
            'class' => 'yii\web\ViewAction',
            'viewPrefix' => '',
        ],
    ];
}
<?php
namespace app\components;

use yii\base\Action;

class HelloWorldAction extends Action
{
    public function run()
    {
        return "Hello World";
    }
}
public function actionForward()
{
    // ユーザのブラウザを http://example.com にリダイレクトする
    return $this->redirect('http://example.com');
}
namespace app\controllers;

use yii\web\Controller;

class PostController extends Controller
{
    public function actionView($id, $version = null)
    {
        // ...
    }
}
public function actionView(array $id, $version = null)
{
    // ...
}
namespace app\controllers;

use yii\web\Controller;

class SiteController extends Controller
{
    public $defaultAction = 'home';

    public function actionHome()
    {
        return $this->render('home');
    }
}