ThinkPHP6.0 study notes-controller

Controller

Mirror Wang Yuyang
recommends to refer to the official documentation

Controller definition

Controller (controller), controller files are stored in the app/controllerdirectory, you can change the default controller directory through config/route.phpconfiguration controller_layer.

Create a controller Test.php:app/controller/Test.php

namespace app\controller;
class Test
{
    public function index()
    {
        return "控制器：Test.php";
    }
}

Two-word (capital) controller: HelloWorld, you can access the same effect through two access structures

http://thinkphp6.0/index.php/helloworld
http://thinkphp6.0/index.php/hello_world

Introduce controller suffix

To avoid the introduction of conflicts with model classes of the same name, the route.phpconfiguration controller_suffixis truesuch that all controller class names need to be changed TestController, and the file name also changes.TestController.php

Render output

• return direct output

  Direct returnsyntax output is used in Thinkphp

• JSON output: Introduce jsonfunctions to output array data

  $data = array ('a'=>1 , 'b'=>2 , 'c'=>3);
  return json($data);
  

• Render template output

  return view();
  

Use the halthelper function provided by thinkphp system to perform interrupt output test

halt('中断测试');

Basic controller

After creating a controller file, get app\BaseControllermore methods by inheriting the "basic controller class" (default application file)

The basic controller provides the verification function of the controller; injected thinkphp\app, thinkphp\requestright, you can directly use the basic controller class app, requestproperty call thinkphp\app, thinkphp\requestobject instance

use app\BaseController;

class Test = extentds BaseController
{
    public function index()
    {
        //返回当前方法名
        return $this->request->action();
        //返回实际路径
        return $this->app->getBasePath();
    }
}

At the same time, the BaseControllerclass contains controller verification function, batch verification and initialization initializemethod

Empty controller

The definition of empty controller means that when the system cannot find the specified controller name, the system will try to locate the empty controller Errorclass in the application ; this mechanism is used to customize error pages and URL optimization

class Error
{
    public function index()
    {
        return "当前访问控制器不存在"
    }
}

Multi-level controller

Definition: controllerCreate a directory and create a controller in the controller directory; create a app\controller\group\Blog.phpdirectory and file (controller)

class Blog
{
	    public function index()
        {
        	return 'index';
        }
    public function read()
        {
        	return 'read';
        }
}

URL access:http://thinkphp/group.blog/read

This is by group.blogaccessing the blog file in the group directory in the controller directory; this method can also be iterated in multiple levels, such as creating Klii.php in the klii directory in the group to construct group.klii.Kliiaccess.