Php OOP数据设置uu构造和SQL与多个类的连接问题

因此，情况如下：

我有两个类=用户和博客

Blogs类扩展了Users类

Users类构造看起来有点像这样：

public $users_id;
public $users_blogs_id;
public $users_first_name;
public $users_last_name;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }

}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

}

$sql = "SELECT * FROM users LEFT JOIN blogs ON users.users_blogs_id = blogs.blogs_id";
$data = Users::select_all($sql);

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*-----------------------From Users Class----------------------*/
if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }


}

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*--------------------Column that I wanna join----------------------*/
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }


}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    use ConstructFunctions;

}

Blogs类构造函数如下所示：

public $users_id;
public $users_blogs_id;
public $users_first_name;
public $users_last_name;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }

}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

}

$sql = "SELECT * FROM users LEFT JOIN blogs ON users.users_blogs_id = blogs.blogs_id";
$data = Users::select_all($sql);

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*-----------------------From Users Class----------------------*/
if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }


}

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*--------------------Column that I wanna join----------------------*/
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }


}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    use ConstructFunctions;

}

从中联接表的列是用户表中的“users\u blogs\u id”和blogs表中的“blogs\u id”

我的sql语句看起来有点像这样：

public $users_id;
public $users_blogs_id;
public $users_first_name;
public $users_last_name;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }

}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

}

$sql = "SELECT * FROM users LEFT JOIN blogs ON users.users_blogs_id = blogs.blogs_id";
$data = Users::select_all($sql);

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*-----------------------From Users Class----------------------*/
if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }


}

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*--------------------Column that I wanna join----------------------*/
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }


}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    use ConstructFunctions;

}

现在，“selectall”函数应该创建一个新对象，该对象将运行构造函数并将找到的值存储在其各自的属性中，然后返回结果

问题是，如果我调用Users类select，它将只运行Users构造函数，并只向我发送带有找到的结果的Users类属性。但是，如果我调用Blogs类select，它将返回Blogs属性以及users属性，但是，只有Blogs属性将包含找到的结果，users属性将为空，因为Blogs构造函数不包含使用找到的结果设置users属性所需的代码集

我尝试过的事情：

创建多个查询

例如，当我从Users类调用user select时，我获取“Users\u blogs\u id”列值，然后运行另一个查询，从blogs表中选择blog，其中“blogs\u id=：Users\u blogs\u id”

复制部分博客/用户构造函数代码

因此，由于Blogs类的构造函数中缺少部分构造函数代码，我只需从Users类的构造函数中复制该部分代码，并将其粘贴到Blogs类中，如下所示：

public $users_id;
public $users_blogs_id;
public $users_first_name;
public $users_last_name;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }

}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

}

$sql = "SELECT * FROM users LEFT JOIN blogs ON users.users_blogs_id = blogs.blogs_id";
$data = Users::select_all($sql);

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*-----------------------From Users Class----------------------*/
if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }


}

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*--------------------Column that I wanna join----------------------*/
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }


}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    use ConstructFunctions;

}

这将使用select函数中找到的结果设置users类和blogs类的属性，但最终我会重复代码，这也是我不想要的

仅添加要加入构造函数的列

在本例中，我想加入的列是users类中的“users\u blogs\u id”和blogs类中的“blogs\u id”

由于Blogs类是子类，我将users类中的“users\u Blogs\u id”构造代码添加到Blogs构造代码中，如下所示：

public $users_id;
public $users_blogs_id;
public $users_first_name;
public $users_last_name;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }

}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

}

$sql = "SELECT * FROM users LEFT JOIN blogs ON users.users_blogs_id = blogs.blogs_id";
$data = Users::select_all($sql);

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*-----------------------From Users Class----------------------*/
if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }


}

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*--------------------Column that I wanna join----------------------*/
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }


}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    use ConstructFunctions;

}

然而，这最终导致我创建了多个sql查询，这是我想要避免的

使用特征（错误的方式）

所以我所做的就是创建一个trait，它包含所有类的所有构造代码。下面是一个例子：

trait ConstructFunctions{
    
    
    
    public function __construct($data=array())
    {
     /*---------------Blogs Construct--------------------*/
      if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*-----------------------Users Construct------------------------*/

 if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }

    }

}

然后我简单地调用trait，比如Blogs类，如下所示：

public $users_id;
public $users_blogs_id;
public $users_first_name;
public $users_last_name;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }

}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

}

$sql = "SELECT * FROM users LEFT JOIN blogs ON users.users_blogs_id = blogs.blogs_id";
$data = Users::select_all($sql);

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*-----------------------From Users Class----------------------*/
if(isset($data['users_id']))
  {
   $this->users_id= $data['users_id'];
  }
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }
   if(isset($data['users_first_name']))
  {
   $this->users_first_name = $data['users_first_name'];
  }
   if(isset($data['users_last_name']))
  {
   $this->users_last_name = $data['users_last_name'];
  }


}

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

/*--------------------Column that I wanna join----------------------*/
if(isset($data['users_blogs_id']))
  {
   $this->users_blogs_id= $data['users_blogs_id'];
  }


}

public $blogs_id;
public $blogs_title;
public $blogs_author;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    use ConstructFunctions;

}

现在这种方法对我最有效。它消除了代码的重复，允许我传递一个sql查询。但问题是，据我的同事说，这是施工人员的错误做法，他们阻止我使用这种方法

我的目标

使用联接通过单个sql查询存储和获取所有类的属性值。停止构造函数中代码的重复或至少在一定程度上减少代码的重复。不违反施工人员的法律

---

感谢您的每一个意见。非常感谢。如果您对我的问题有任何疑问，请务必告诉我。

您可以致电父构造函数：

// blog class
public function __construct($data=array())
{
    /* your code to set properties in blog */

    parent::__construct($data);
}

但我建议您使用并重新考虑您的类设计，例如类->实体->表：

class User // <---------------+
{                          // |
    // some fields            |
}                          // |
                           // |
class Blog                 // |
{                          // |
    // some fields            |
                           // |
    User $user;   // ---------+
}

---

class User//谢谢@Cid解决了我的问题。我将发布我为任何需要它的人提出的解决方案：

Blogs类有两个简单的更改：一个附加属性和设置propertys值的代码

public $blogs_id;
public $blogs_title;
public $blogs_author;

//New Property
public $users;

/**
 * Sets the object's properties using the values in the supplied array
 *
 * @param assoc The property values
 */

public function __construct($data=array()){

    if(isset($data['blogs_id']))
  {
   $this->blogs_id= $data['blogs_id'];
  }
   if(isset($data['blogs_title']))
  {
   $this->blogs_title = $data['blogs_title'];
  }
   if(isset($data['blogs_author']))
  {
   $this->blogs_author = $data['blogs_author'];
  }

//New property setting code

   $this->users = new Users($data);
  

}

sql保持不变，但是现在从Blogs类调用select语句

$sql = "SELECT * FROM users LEFT JOIN blogs ON users.users_blogs_id = blogs.blogs_id";
$data = Blogs::select_all($sql);


它现在将使用其构造函数使用找到的值设置Blogs类的属性，并创建一个新的Users对象，该对象将使用Users类的构造函数使用找到的值设置Users类的属性，并将其存储在“$Users”中属性，然后将包含适当数据的所有博客和用户属性发送回“$data”变量