Laravel中的User模型

分析在laravel中的User Model，会发现一些很有意思的事情

• User模型

use Illuminate\Auth\Authenticatable;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Auth\Passwords\CanResetPassword;
use Illuminate\Contracts\Auth\Authenticatable as AuthenticatableContract;
use Illuminate\Contracts\Auth\CanResetPassword as CanResetPasswordContract;

// 实现了AuthenticatableContract，CanResetPasswordContract
// 但是在模型类中不实现，只是
// 通过trait class = (Authenticatable,CanResetPassword)实现。

class User extends Model 
     implements AuthenticatableContract, CanResetPasswordContract 
{

    use Authenticatable, CanResetPassword;

    /**
     * The database table used by the model.
     *
     * @var string
     */
    protected $table = 'users';

    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = ['name', 'email', 'password'];

    /**
     * The attributes excluded from the model's JSON form.
     *
     * @var array
     */
    protected $hidden = ['password', 'remember_token'];

}

• AuthenticatableContract接口定义

namespace Illuminate\Contracts\Auth;

// 约定，namespace带有Contracts的，表示接口

interface Authenticatable {

    /**
     * Get the unique identifier for the user.
     *
     * @return mixed
     */
    public function getAuthIdentifier();

    /**
     * Get the password for the user.
     *
     * @return string
     */
    public function getAuthPassword();

    /**
     * Get the token value for the "remember me" session.
     *
     * @return string
     */
    public function getRememberToken();

    /**
     * Set the token value for the "remember me" session.
     *
     * @param  string  $value
     * @return void
     */
    public function setRememberToken($value);

    /**
     * Get the column name for the "remember me" token.
     *
     * @return string
     */
    public function getRememberTokenName();

}

• Authenticatable的实现

namespace Illuminate\Auth;

trait Authenticatable {

    /**
     * Get the unique identifier for the user.
     *
     * @return mixed
     */
    public function getAuthIdentifier()
    {
        return $this->getKey();
    }

    /**
     * Get the password for the user.
     *
     * @return string
     */
    public function getAuthPassword()
    {
        return $this->password;
    }

    /**
     * Get the token value for the "remember me" session.
     *
     * @return string
     */
    public function getRememberToken()
    {
        return $this->{$this->getRememberTokenName()};
    }

    /**
     * Set the token value for the "remember me" session.
     *
     * @param  string  $value
     * @return void
     */
    public function setRememberToken($value)
    {
        // 用这样的方式很灵活....
        $this->{$this->getRememberTokenName()} = $value;
    }

    /**
     * Get the column name for the "remember me" token.
     *
     * @return string
     */
    public function getRememberTokenName()
    {
        return 'remember_token';
    }

}