PHP 将 MySql 查询与类分离

Question

我创建的所有 classes 似乎都充满了包含 MySql 查询的方法。我决定尝试一下脱钩。下面是我的基础 class Customer 和我的存储库 class CustomerRepository，如果需要，它们会传递给构造函数。方法很基础，customer中的save方法例如在 CustomerRepository 中调用 create 方法。客户 class 现在可读性更强了，但代价是什么？我编写了一个完整的其他 class 只是为了执行 MySql 查询，我本可以在 Customer class 中的 create 方法中开始查询。我正在努力寻找一个现实世界中的解耦示例，它适用于这种情况，因为它与工作项目有关。我在这里找到的示例 Proper Repository Pattern Design in PHP?（虽然很棒）似乎过于复杂。我的问题是：我是否正确解耦？当现实世界需要快速且有点脏的代码来尽快实现业务目标时，甚至有必要进行解耦吗？

<?php

/*
 CRUD
 create, read, update, delete
*/

class Customer {

    public $CustomerRepository;

    public $id;
    public $first_name;
    public $last_name
    public $email;
    public $phone;

    public function __construct( CustomerRepository $CustomerRepository = null ) {
        if( !is_null( $CustomerRepository ) {
            $this->CustomerRepository = $CustomerRepository;
        }
    }

    public function save() {

        return $this->CustomerRepository->create( 
            $this->first_name, 
            $this->last_name, 
            $this->email, 
            $this->phone 
        );

    }

    public function find() {

        return $this->CustomerRepository->read( $this->id );

    }

    public function edit() {

        return $this->CustomerRepository->update( 
            $this->first_name, 
            $this->last_name, 
            $this->email, 
            $this->phone,
            $this->id
        );

    }

    public function remove() {

        return $this->CustomerRepostitory->delete( $this->id );

    }

    public function populate( $id ) {

        $customer = $this->find( $id );
        $this->id         = $customer['id'];
        $this->first_name = $customer['first_name'];
        $this->last_name  = $customer['last_name'];
        $this->email      = $customer['email'];
        $this->phone      = $customer['phone'];

    }

}

class CustomerRepository {

    private $Database;

    public function __construct() {
        if( is_null( $this->Database ) {
            $this->Database = new Database();
        }
    }

    public function create( $first_name, $last_name, $email, $phone ) {

        $this->Database->query( 'INSERT INTO customers( first_name, last_name, email, phone ) 
            VALUES( :first_name, :last_name, :email, :phone )' );
        $this->Database->bind( ':first_name', $first_name );
        $this->Database->bind( ':last_name', $last_name );
        $this->Database->bind( ':email', $email );
        $this->Database->bind( ':phone', $phone );

        return $this->Database->getLastID();
    }

    public function read( $id ) {

        $this->Database->query( 'SELECT * FROM customers WHERE id = :id LIMIT 1' );
        $this->Database->bind( ':id', $id ):

        return $this->Database->single();

    }

    public function update( $first_name, $last_name, $email, $phone, $id ) {

        $this->Database->query( 'UPDATE customer SET 
            first_name = :first_name,
            last_name  = :last_name,
            email      = :email,
            phone      = :phone WHERE id = :id' );
        $this->Database->bind( ':first_name', $first_name );
        $this->Database->bind( ':last_name', $last_name );
        $this->Database->bind( ':email', $email );
        $this->Database->bind( ':phone', $phone );
        $this->Database->bind( ':id', $id );

        return $this->Database->execute();
    }

    public function delete( $id ) {

        $this->Database->query( 'DELETE FROM customers WHERE id = :id LIMIT 1' );
        $this->Database->bind( ':id', $id ):

        return $this->Database->execute();

    }

}

Answer 1

正如大家已经在此处建议的那样，您需要实施 ORM。看这题选择：Good PHP ORM Library?

如果您仍然不想使用 ORM，您将需要自己实现同样的事情，这将比使用 ready-to-go ORM 花费更多的时间。您可以实施工作单元（http://martinfowler.com/eaaCatalog/unitOfWork.html ) 和 Repository (http://martinfowler.com/eaaCatalog/repository.html) 模式来构建您自己的 ORM。

PHP 将 MySql 查询与类分离

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PHP 将 MySql 查询与类分离