Question

我在cakephp 3中使用选项分组。我正在使用这个发现：

$seasons = $this->Episodes->Seasons
            ->find('all')
            ->combine('id','season','show_id')
            ->toArray();

结果几乎我需要的东西：

[
    (int) 269 => [
        (int) 784 => (int) 1
    ],
    (int) 270 => [
        (int) 785 => (int) 1,
        (int) 786 => (int) 2,
        (int) 787 => (int) 3
    ]
]

但是不是按show_id进行分组，而是按照节目的名称进行分组，即访问show_id字段关联的表并从那里获取名称，从而产生

[
    'some show' => [
        (int) 784 => (int) 1
    ],
    'another show' => [
        (int) 785 => (int) 1,
        (int) 786 => (int) 2,
        (int) 787 => (int) 3
    ]
]

我试过了：

$seasons = $this->Episodes->Seasons
            ->find('all')
            ->contain('Shows')
            ->combine('id','season','Shows.name')
            ->toArray();

但这不起作用。（Shows.name似乎为空，导致根本没有分组。）如何实现所需的结果？

Answer 1

回答我自己的问题：可以通过闭包来完成。

    $seasons = $this->Episodes->Seasons
            ->find('all')
            ->contain('Shows')
            ->combine('id','season',function($season) {return $season->show->name;})
            ->toArray();

给出了期望的结果。

具有关联表的选项组

1 个答案: