How to delete data in thinkphp5

In the process of developing web applications, deleting data is an essential operation. Whether it is deleting users, deleting articles, deleting comments, etc., deletion operations are required. Of course, to achieve this operation, you need to use appropriate technology and tools. This article will introduce in detail the use of ThinkPHP5 framework to implement deletion of data operations.

1. Introduction

ThinkPHP5 is a fast, safe and simple PHP development framework. It provides many out-of-the-box features such as routing, template engine, database operations, and more. Using the ThinkPHP5 framework, developers can develop web applications more conveniently.

2. Database preparation

Before using the ThinkPHP5 framework to delete data, we need to prepare the appropriate database. In this example, we will create a database named "test" and create a data table named "users" in it. This table will contain user data and we will perform delete operations in this table.

The following is the structure of the "users" table:

CREATE TABLE users (
id int(11) NOT NULL AUTO_INCREMENT,
name varchar(255) NOT NULL,
email varchar(255) NOT NULL,
password varchar(255) NOT NULL,
PRIMARY KEY (id)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

3. Delete data

When using the ThinkPHP5 framework Before deleting data, some preparations are required. First, we need to introduce the model in our controller. A model is an object that gets data from the database, and we can use the model to perform database operations.

Here we will create a model called "Users" and define the delete method in it. The following is a sample model code:

namespace app\index\model;

use think\Model;

class Users extends Model
{

protected $table = 'users'; // 数据表名
protected $pk = 'id'; // 主键名

public function deleteUser($id)
{
    return $this->where('id', $id)->delete();
}

}

In the above code, we define a method named "deleteUser", which accepts an id parameter and uses this parameter to perform the delete operation. We use the where method to set the deletion condition, and then use the delete method to perform the deletion operation. If the deletion is successful, the delete method will return the number of affected rows.

4. Controller

After the model is ready, we need to use the model's method in the controller to perform the delete operation. The following is a sample controller code that deletes user data:

namespace app\index\controller;

use app\index\model\Users; // Introduce the Users model

class UserController
{

public function delete()
{
    $id = input('id'); // 获取传递的id参数

    $userModel = new Users(); // 实例化Users模型
    $res = $userModel->deleteUser($id); // 调用deleteUser方法

    if ($res) {
        return '删除成功';
    } else {
        return '删除失败';
    }
}

}

In this controller, we first get the passed id parameter from the input. We then instantiate the Users model and call the deleteUser method with the id parameter. If the deletion is successful, we will return "Deletion Successful", otherwise we will return "Deletion Failed".

5. Conclusion

In this article, we demonstrated how to implement the delete operation using the ThinkPHP5 framework. We created a user data table in the database and defined a method named "deleteUser" to perform the delete operation. We then use this method on the controller and use it to delete the user data. I hope this article can help you better understand and use the ThinkPHP5 framework.

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