扩展雄辩的类的构造函数 [英] Constructors on classes extending Eloquent

问题描述

我刚开始一个新的网站，我想利用雄辩。在播放我的数据库的过程中，我注意到，如果我在扩展雄辩的模型中包含了任何类型的构造函数，我将添加空行。例如，运行此播种器：

I just started a new website and I wanted to make use of Eloquent. In the process of seeding my database, I noticed that I would get empty rows added if I had included any kind of constructor on the model that extends eloquent. For example, running this seeder:

<?php

class TeamTableSeeder extends Seeder {

    public function run()
    {
        DB::table('tm_team')->delete();

        Team::create(array(
            'city' => 'Minneapolis',
            'state' => 'MN',
            'country' => 'USA',
            'name' => 'Twins'
            )
        );

        Team::create(array(
            'city' => 'Detroit',
            'state' => 'MI',
            'country' => 'USA',
            'name' => 'Tigers'
            )
        );
    }

}

将此作为我的团队类：

With this as my Team class:

<?php

class Team extends Eloquent {

    protected $table = 'tm_team';
    protected $primaryKey = 'team_id';

    public function Team(){
        // null
    }
}

收益：

team_id | city  | state | country   | name  | created_at            | updated_at            | deleted_at
1       |       |       |           |       | 2013-06-02 00:29:31   | 2013-06-02 00:29:31   | NULL
2       |       |       |           |       | 2013-06-02 00:29:31   | 2013-06-02 00:29:31   | NULL

只需将构造函数一起移除即可使播种机按预期方式工作。我正在做什么错误的构造函数？

Simply removing the constructor all together allows the seeder to work as expected. What exactly am I doing wrong with the constructor?

推荐答案

你必须调用 parent :: __ construct 使事情在这里工作，如果你看看 Eloquent 类的构造函数：

You have to call parent::__construct to make things work here, if you look at the constructor of the Eloquent class:

public function __construct(array $attributes = array())
{
    if ( ! isset(static::$booted[get_class($this)]))
    {
        static::boot();

        static::$booted[get_class($this)] = true;
    }

    $this->fill($attributes);
}

启动被调用，并且启动属性被设置。我真的不知道这是做什么，但根据你的问题似乎相关：P

The boot method is called and the booted property is set. I don't really know what this is doing but depending on your problem it seems relevant :P

重构你的构造函数以获取属性 array并将其放在父构造函数中。

Refactor your constructor to get the attributes array and put it to the parent constructor.

更新

这是需要的代码：

class MyModel extends Eloquent {
    public function __construct($attributes = array())  {
        parent::__construct($attributes); // Eloquent
        // Your construct code.
    }
}

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