如何在withCount()上运行子查询?
我有一个查询要运行多个计数,每个计数都有自己的子查询。
以下是我正在寻找的示例:
$date_from = Carbon::parse('1/1/2018');
$date_to = Carbon::parse('1/2/2018');
$models = Model::query()
->withCount('relation1', function (Builder $query) use ($date_from, $date_to) {
$query->whereBetween('relation1.date1', [$date_from, $date_to])
->where('value1', true);
})
->withCount('relation2', function (Builder $query) use ($date_from, $date_to) {
$query->whereBetween('relation2.date2', [$date_from, $date_to])
->where('value2', false);
})
->withCount('relation3', function (Builder $query) use ($date_from, $date_to) {
$query->whereBetween('relation3.date3', [$date_from, $date_to]);
});
我该怎么做,这样才能根据每个关系的子查询正确获取模型计数?
答案 0 :(得分:1)
我认为您需要将子查询作为关联数组值传递:
https://laravel.com/docs/5.7/eloquent-relationships#counting-related-models
例如
$date_from = Carbon::parse('1/1/2018');
$date_to = Carbon::parse('1/2/2018');
$models = Model::withCount([
'relation1' => function (Builder $query) use ($date_from, $date_to) {
$query->whereBetween('relation1.date1', [$date_from, $date_to])
->where('value1', true);
},
'relation2' => function (Builder $query) use ($date_from, $date_to) {
$query->whereBetween('relation2.date2', [$date_from, $date_to])
->where('value2', false);
},
'relation3' => function (Builder $query) use ($date_from, $date_to) {
$query->whereBetween('relation3.date3', [$date_from, $date_to]);
}
])->get();