How to encapsulate methods in thinkphp

ThinkPHP is a very excellent PHP framework, which is very suitable for small and medium-sized enterprises and individual developers. When developing using the ThinkPHP framework, we often encounter functional modules that need to be reused, such as adding, deleting, modifying, and checking a certain model. At this time, we need to encapsulate some common methods to reduce code redundancy and improve Code reusability and maintainability. So, this article will introduce how to encapsulate methods in the ThinkPHP framework.

1. What is method encapsulation?

Method encapsulation refers to encapsulating some frequently used code logic into a method. This method can be called repeatedly in different places to save code. to improve code readability and maintainability. In the ThinkPHP framework, the encapsulation method is also one of the commonly used technical means.

2. Encapsulation of methods in ThinkPHP

To encapsulate methods in the ThinkPHP framework, we mainly implement it by defining controllers or models. Let's take the controller as an example to briefly introduce how to encapsulate it.

1. Define controller

In the ThinkPHP framework, each controller is a class, and we implement method encapsulation by defining a controller class. First, we can add the namespace and code referencing the class library to the head of the controller class, as shown below:

namespace Home\Controller;
use Think\Controller;

2. Define the encapsulation method

Then, We define an encapsulation method in the controller class, for example, define a method to query the data of a certain model. The code is as follows:

protected function getModelData($model){
    //实例化模型
    $m = M($model);
    //查询数据并返回
    return $m->select();
}

In this example, we define a protected method getModelData, It accepts a string parameter $model, which represents the name of the model to query data. In the method, we first instantiate the model through the M function, then use the model to query the data and return the query results.

It should be noted that since this method is protected, it can only be accessed in this controller. If you need to reuse the method in other controllers, you need to define it as a public method.

3. Calling the encapsulation method

In the controller, we can implement some common functions by calling the encapsulation method, such as calling the getModelData defined above in the Index controller Method, the code is as follows:

class IndexController extends Controller {
    public function index(){
        //调用封装方法获取模型数据
        $data = $this->getModelData('User');
        //渲染视图
        $this->assign('data',$data);
        $this->display();
    }
}

In this example, we call the getModelData method in the index method of the Index controller, thereby obtaining all the data of the User model and assigning it to the view.

The above is an introduction to the encapsulation implementation method of methods in the ThinkPHP framework. Through the encapsulation method, we can effectively reduce code redundancy and improve code reusability and maintainability.

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