Laravel Eloquent 像对待 'deleted_at' 一样对待列 'archived_at'答案

【问题标题】：Laravel Eloquent to treat the column 'archived_at' like it does 'deleted_at'Laravel Eloquent 像对待 'deleted_at' 一样对待列 'archived_at'
【发布时间】：2014-08-15 22:40:57
【问题描述】：

我试图让 Laravel 以与处理“deleted_at”相同的方式处理新添加的名为“archived_at”的列。也就是说，当我运行查询时，我不希望它获取任何存档记录，除非我明确告诉它（即 Invoices::onlyArchived()->paginate()）。换句话说，archived_at 行为应该模仿 Laravel 内置的软删除行为。

我看到 Laravel 的 Builder 和 Model 类中内置了软删除功能。到目前为止，这是我所拥有的：

扩展 Model 类并在 new 中添加 archived_at 功能类。
更新app/config.php别名如下：

    // 'Eloquent'        => 'Illuminate\Database\Eloquent\Model',
    'Eloquent'        => 'CoreExtensions\Model',

我似乎无法弄清楚如何扩展 Builder 类并强制 Laravel 从扩展的 Builder 类中读取。如果我能做到这一点，我可能会弄清楚其余的。有什么建议么？提前致谢！

【问题讨论】：

标签： php class laravel-4

【解决方案1】：

您可能只需要扩展 Eloquent 并执行以下操作：

<?php

class BaseModel extends Eloquent {

    public static function withArchived()
    {
        return with(new static)->newQuery(true, true);
    }

    public static function onlyArchived()
    {
        return with(new static)->newQuery(false, false, true);
    }

    /**
     * Get a new query builder for the model's table.
     *
     * @param  bool  $excludeDeleted
     * @return \Illuminate\Database\Eloquent\Builder|static
     */
    public function newQuery($excludeDeleted = true, $excludeArchived = true, $onlyArchived = false)
    {
        $builder = $this->newEloquentBuilder($this->newBaseQueryBuilder());

        // Once we have the query builders, we will set the model instances so the
        // builder can easily access any information it may need from the model
        // while it is constructing and executing various queries against it.
        $builder->setModel($this)->with($this->with);

        if ( ! $onlyArchived)
        {
            if ($excludeDeleted && $this->softDelete)
            {
                $builder->whereNull($this->getQualifiedDeletedAtColumn());
            }

            if ($excludeArchived)
            {
                $builder->whereNull('archived_at');
            }
        }
        else
        {
            $builder->whereNotNull('archived_at');
        }

        return $builder;
    }

}

然后你可能能够：

Invoices::onlyArchived()->paginate();

Invoices::withArchived()->where('customer_id', $customer_id)->paginate();

【讨论】：

【解决方案2】：

如果你运行的是 Laravel 4.2，你可以查看这两个文件，我已经基于内置的 SoftDelete trait 创建了我自己的 trait。（这比上面的答案灵活得多。）

Illuminate/Database/Eloquent/SoftDeletingScope.php
Illuminate/Database/Eloquent/SoftDeletingTrait.php

http://laravel.io/forum/08-14-2014-add-filter-to-builder-on-a-custom-method-call

【讨论】：

您将自定义文件放在哪里？