我如何在Laravel的“ whereIn”中使用“ if”条件

Question

以下是我使用的查询，对我来说很好用。

    if($t_requested['category_id'])
    {
        $t_query_condition['p.category_id'] = $t_requested['category_id'];
    }
    if($t_requested['brand_id'])
    {
        $t_query_condition['p.brand_id'] = $t_requested['brand_id'];
    }

    $browseData = DB::table('products as p')
        ->leftjoin('categories as cp', 'p.category_id', '=', 'cp.id')
        ->leftjoin('brands as bp', 'p.brand_id', '=', 'bp.id')
        ->select('p.id as product_id','p.name as product_name','cp.title as category_name','bp.name as brand_name','p.product_weight',
               'p.short_description','p.product_price','p.special_price','p.stock_quantity')
        ->orderBy('p.created_by', "desc")
        ->offset(0)
        ->limit(10)
        ->where($t_query_condition)
        ->get();

但是现在我在“ category_id”和“ brand_id”中有多个ID，我想使用whereIn但它与condition一起使用。 如果我得到category_id或brand_id为null，则跳过。

提前致谢。

Answer 1

试试这个查询，希望你能得到结果

        $browseData = DB::table('products as p')
       ->select('p.id as product_id','p.name as product_name','cp.title as category_name','bp.name as brand_name','p.product_weight',
               'p.short_description','p.product_price','p.special_price','p.stock_quantity')

        ->leftjoin('categories as cp', 'p.category_id', '=', 'cp.id')
        ->leftjoin('brands as bp', 'p.brand_id', '=', 'bp.id')
        ->orderBy('p.created_by', "desc");
       if($t_requested['category_id'])
         {
          $browseData->whereIn('p.category_id',$t_requested['category_id']);
         }
      if($t_requested['brand_id'])
         {
         $browseData->whereIn('p.brand_id',$t_requested['brand_id']);
         }

      $result=browseData->offset(0)->limit(10)->get();

Answer 2

我认为这很简单，您必须传递值数组而不是一个值

我已经尝试编写实现此目的的选项，您必须遵循适合您的选项

if($t_requested['category_id'])
{
   $t_query_condition['p.category_id'] = $t_requested['category_id']; // it should be array OR

   $t_query_condition['p.category_id'] = explode(",",$t_requested['category_id']); // if you get value comma saperated

$t_query_condition['p.category_id'] = explode(",",$t_requested['category_id']); // if you get value comma saperated

$t_query_condition['p.category_id'] = [$t_requested['category_id']]; // if you want to convert one value into array
        }