适合学生党赚钱的app软件

書名： Yii2 By Example
作者名： Fabrizio Caldarelli
本章字數： 457字
更新時間： 2021-07-16 19:38:56

Creating static pages

All websites contain static pages, whose content is static.

To create a static page in a common way, we need to:

Create a function (action) to execute action in Controller
Create a view for static content

Append the following action to Controller:

public function actionInfo()
{
    return $this->render('info');
}

Then, create a view in views/controller/action-name.php. This procedure is simple but too long and redundant.

Yii2 provides a quick alternative, adding static pages to the actions() method of Controller as follows:

public function actions()
{
  return [
    'pages' => [
    'class' => 'yii\web\ViewAction',
    ],
  ];
}

With this simple declaration, we can put all static content under views/controllerName/pages.

Finally, we can point to the URL with route controller_name/page and the view parameter with the name of a view file such as http://hostname/basic/web/index.php?r=controllerName/pages&view=name_of_view.

Example – add a contact page

After we have learned how to create a static page, it is time to write a contact page.

Let's put a short static content in views/site/pages/contact.php as follows:

To contact us, please write to info@example.com

Then, let's add a page attribute in the return array from the actions() method of Controller. To simplify, we will use SiteController that has this default implementation of the actions() method:

  public function actions()
  {
    return [
    'error' => [
       'class' => 'yii\web\ErrorAction',
    ],
    'captcha' => [
      'class' => 'yii\captcha\CaptchaAction',
      'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
    ],
  ];
  }

After the last attribute, we will append the page attribute, and the following will be the result:

  public function actions()
  {
    return [
    'error' => [
      'class' => 'yii\web\ErrorAction',
    ],
    'captcha' => [
      'class' => 'yii\captcha\CaptchaAction',
      'fixedVerifyCode' => YII_ENV_TEST ? 'testme' : null,
    ],
    'pages' => [
      'class' => 'yii\web\ViewAction',
    ],
  ];
  }

Now, every request to site/pages/ is routed using the ViewAction class, which handles it simply by rendering static content of relative view.

Test it by clicking on http://hostname/basic/web/index.php?r=site/pages&view=contact, and we should see this:

We can customize the last part of the route with these changes:

The attribute name of array returned from the actions() method of Controller
Set the viewPrefix attribute of the ViewAction class declaration with the first part of the URL that we want to use to reach the pages
Change the name of the subfolder under views/controllerName

For example, we want to use static as the last part of the URL to reach static pages in SiteController.

We want to point to http://hostname/basic/web/index.php?r=site/static&view=contact to display the contact view.

This will be the ViewAction node in the array from the actions() method of SiteController:

    'static' => [
    'class' => 'yii\web\ViewAction',
    'viewPrefix' => 'static'
    ],

We must also change the name of the static pages subfolder, renaming it from views/site/pages to views/site/static, and we can point to http://hostname/basic/web/index.php?r=site/static&view=contact.

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Yii2 By Example

Creating static pages

Example – add a contact page