Laravel 5查詢生成器，復雜的聯接（條件AND（條件OR條件））

Question

我需要在Laravel的查詢生成器中重現以下查詢：

select * from table LEFT JOIN table_b ON `condition` AND (`condition` OR `condition`)

我知道您可以where語句中執行復雜的操作：

Model::where(function ($query) {
  return $query->where("field","value")->orWhere("field","value");
})->where("field","value")->get();

而且我知道您可以on語句進行半復雜化：

->leftJoin('table', function ($join) {
  $join->on("field","=","field_b")
    ->on("field_a","=","field_c");
})

但是我需要on語句中包含condition AND (condition OR condition) 。 如果不執行DB::raw()或等效方法，這可能嗎？

Answer 1

用這個：

->leftJoin('table', function ($join) {
    $join->on("field","=","field_b")
        ->on(function($join) {
            $join->on("field_a","=","field_c")
                ->orOn("field_d","=","field_e");
        });
})