How to use Eloquent to simplify the business layer in ThinkPHP6

With the development of the Internet, the development of Web applications has become the core of modern software development. Due to the complexity of business logic, developers need many tools and technologies to simplify code and improve efficiency. In this regard, using Eloquent ORM can greatly simplify business layer code. In this article, we will introduce how to use Eloquent in ThinkPHP6 to simplify the business layer.

What is Eloquent?

Eloquent is a powerful ORM (Object Relational Mapping) tool developed by Laravel. It allows developers to operate the database through concise and intuitive syntax without having to write complex SQL statements. Eloquent automatically maps the data in the data table into corresponding PHP objects, allowing developers to process data in an object-oriented programming (OOP) manner.

Use of Eloquent in ThinkPHP6

In ThinkPHP6, Eloquent can be used by installing the ORM component of the Laravel framework. The following are the steps to use Eloquent:

1. Install the ORM component of the Laravel framework

Enter the following command in the terminal to install the ORM component of the Laravel framework:

composer require illuminate/database

2. Configure database connection

Set the database connection in the /config/database.php file, for example:

'connections' => [
    'mysql' => [
        'driver' => 'mysql',
        'url' => env('DATABASE_URL'),
        'host' => env('DB_HOST', '127.0.0.1'),
        'port' => env('DB_PORT', '3306'),
        'database' => env('DB_DATABASE', 'forge'),
        'username' => env('DB_USERNAME', 'forge'),
        'password' => env('DB_PASSWORD', ''),
        'unix_socket' => env('DB_SOCKET', ''),
        'charset' => 'utf8mb4',
        'collation' => 'utf8mb4_unicode_ci',
        'prefix' => '',
        'strict' => true,
        'engine' => null,
    ],
],

3. Create the corresponding model class

Create the corresponding model class in the /app/Models folder. For example, if we have a data table called "users", we can create a model class called "User" with the following code:

namespace appmodels;

use IlluminateDatabaseEloquentModel;

class User extends Model
{
    //指定表名
    protected $table = 'users';

    //指定主键
    protected $primaryKey = 'id';

    //是否使用自增主键
    public $incrementing = true;

    //是否需要自动维护时间戳
    public $timestamps = true;
}

In the above code, "$table" specifies the table corresponding to the model class name, "$primaryKey" specifies the name of the primary key, "$incrementing" specifies whether to use an auto-incrementing primary key, and "$timestamps" specifies whether automatic maintenance of timestamps is required.

4. Using Eloquent in the controller

In the controller, we can use Eloquent in the following ways:

...

use appmodelsUser;

class UserController extends Controller
{
    public function index()
    {
        $users = User::where('status', '=', 1)
                    ->orderBy('name')
                    ->get();

        return view('user.index', ['users' => $users]);
    }

    public function show($id)
    {
        $user = User::find($id);

        return view('user.show', ['user' => $user]);
    }

    ...
}

In the above code, The "where" method is used to add query conditions, the "orderBy" method is used to add sorting conditions, and the "get" method is used to execute queries. In addition, the "find" method is used to find the specified record according to the primary key.

Summary

In this article, we introduced how to use Eloquent in ThinkPHP6 to simplify business layer code. By using Eloquent, we can use an object-oriented approach to process data, avoid writing complex SQL statements, and improve the readability and maintainability of the code. If you want to learn more about Eloquent, you can refer to the official Laravel documentation (https://laravel.com/docs/8.x/eloquent).

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