Laravel/Eloquent 建议覆盖特征属性？

Question

我在 Laravel 5.4 中使用 Eloquent 个模型在文档中，我看到：

You may also use the create method to save a new model in a single line. The inserted model instance will be returned to you from the method. However, before doing so, you will need to specify either a fillable or guarded attribute on the model, as all Eloquent models protect against mass-assignment by default.

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

class Flight extends Model
{
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = ['name'];
}

但是，$fillable 属性已经在所有模型使用的特征中定义：

trait GuardsAttributes
{
    /**
     * The attributes that are mass assignable.
     *
     * @var array
     */
    protected $fillable = [];

...

PHP 文档清楚说明了 Traits 属性：

If a trait defines a property then a class can not define a property with the same name, otherwise an error is issued. It is an E_STRICT if the class definition is compatible (same visibility and initial value) or fatal error otherwise.

Laravel 文档中有关建议实施的错误吗？

Answer 1

您不能像 PHP 文档所建议的那样在 class 中覆盖特征属性。

然而，

Laravel 要求您在 child class（您的模型 class 扩展了 Eloquent 模型 class 并且特征包含在 Eloquent 模型 class 中，而不是您的模型 class）。这是一件完全正确的事情！

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