Laravel eloquent 为 hasMany 添加额外的模型

Question

我有一个user 模型，每个用户有多个licenses。有 2 个默认许可证适用于不在 licenses 表中的所有用户，它们需要使用 User 模型中包含的某些数据动态创建。

如何在每次获取用户许可证时创建 2 个许可证并将其添加到 licenses() 的输出中？

class User extends Model implements AuthenticatableContract, CanResetPasswordContract {

    use Authenticatable, CanResetPassword;

    protected $table = 'users';
    public $timestamps = false;

    protected $fillable = ['name', 'email', 'password'];

    protected $hidden = ['password', 'remember_token'];

    public function licenses()
    {
        return $this->hasMany('App\License', 'user_id', 'id')->where('deleted', '=', '0');
    }
}

Answer 1

您可以在调用许可证的模型中创建一个额外的函数并添加额外的许可证。

记得测试你使用这个功能的所有地方，这样就不会发生奇怪的事情了。

<?php

class User extends Model implements AuthenticatableContract, CanResetPasswordContract {

    use Authenticatable, CanResetPassword;

    protected $table = 'users';
    public $timestamps = false;

    protected $fillable = ['name', 'email', 'password'];

    protected $hidden = ['password', 'remember_token'];

    // HasMany function
    public function _licenses()
    {
        return $this->hasMany('App\License', 'user_id', 'id')->where('deleted', '=', '0');
    }

    // New licenses function
    public function licenses() 
    {
        // Get licenses from database
        $licenses = $this->_licenses;

        // Add  other lisences
        $licenses = $licenses->add(new License([ "user_id" => $this->id, "name" => "foo" ]));
        $licenses = $licenses->add(new License([ "user_id" => $this->id, "name" => "bar" ]));

        // Return the new collection
        return $licenses
    }
}