将SQL查询转换为Laravel 4雄辩

Question

有人能帮我把下面的SQL查询转换成雄辩的吗？

select * 
from products, categories 
where products.productID=categories.productID and categories.categoryID = 5;

这就是我尝试过的：

$products = DB::table('products') ->join('categories', function($join) {
    $join->on('products.productID', '=', 'categories.productID')
         ->where('categories.categoryID',$categoryID)
} ->get();

Answer 1

问题可能是，$categoryID在闭包中不可用(也称为匿名函数)。要使用“从外部”变量，必须添加use

$products = DB::table('products')->join('categories', function($join) use ($categoryID){
$join->on('products.productID', '=', 'categories.productID')
     ->where('categories.categoryID', '=', $categoryID);
})->get();