Several functions in YAF framework controller

Recently in use yaf Write a demo, One scenario is to automatically jump to the login page when the user is not logged in .( Found behind yaf The Chinese manual also takes this as an example ,)

First look forward Usage of ：

		if(!$login)
		{
			$this->forward(null,'login','index');
			return false;
		}

The first parameter is to jump moduel name , The following are controller and action The name of . In addition to these three parameters ,forward The fourth parameter is also supported （ Array ）.

It should be noted that there must be return false End the current execution process . Otherwise, the frame will render the current view first , Then render the forwarding destination view . And the contents of the two views are stacked in one page .

Look again redirect：

		if(!$login)
		{
			$this->redirect("/Login/index");
		}

One parameter function , The program redirects directly after the call . There is no need to manually end the current process .

The functions of the two functions are very similar , Guess the difference is redirect No data can be attached . and forward The fourth argument to is an array , Can forward key value pair data . Available for purpose controller Zhongyou $this->getRequest()->getParam() obtain .

Let's look at render and display：

render Is the default behavior of the framework . Its function is to just pre render , Does not immediately show .

and display Is a direct display view . But pay attention to one problem ： Use up display after , Still need to be in the present action Return to one false, Otherwise, the framework will perform the default action （ That's it action Default rendered content ）. It will cause the contents of two views to accumulate in one page .