Yii implementation does not load the layout file

The Yii framework will render the layout by default when rendering the template. The newly created project also contains 3 default layouts: main.php, column1 .php, column2.php, and a public controller Controller.php (in the components directory) is created by default, and the default SiteController.php is the inherited Controller.php. This controller specifies the layout file as column1.php.

First let us look at the steps required to render a template:

1. Pass $this->render('index' in the controller ) to start rendering the index.php view file;

2. When rendering index, first parse the php script in index.php, and then save the parsed result. Go to the $content variable;

3. The system checks whether the layout file is specified. First look for the $this->layout attribute of the controller. If this value is not If it is empty, then render()renders the layout file and uses the $content value as a variable in the layout file, that is, using <? in the layout file. php echo $content;?> can output the parsed content in index.php, and this layout is designated as column1.php by default in Controller, in this In the layout, the project's default layout file main.php is nested.

4. If the controller does not specify the layout attribute, it will look for the layout attribute in the project configuration, which is the layout attribute in main.php, and this attribute does not need to be manually specified. , the default is the views/layouts/main.php file. Parse this layout file through render, and pass the content of index.php into the $content variable.

That is to say, according to the default situation, we need to render three files to render a view, namely index.php, column1.php, main .php.

For people who are not used to layout mode, this will undoubtedly increase the trouble.

Close method:

But turning off layout mode is very simple. You can set the layout property in Controller to false is enough.

Examples are as follows:

SiteController extends Controller{
 public $layout=false; //重写这个属性就可以了
//其他方法
}

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