dow56114 2019-07-02 08:59
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有条件地将where子句添加到eloquent查询中

I have a products database. I allow users to enter a search term and I display products related to their search term. I'm wanting to add the ability for the user to further filter these results by "gender" using AJAX. If the user selects a gender from a select box this is sent to the URL query string.

here is my code responsible for detecting if "gender" is in the query string.

$searchTerm = request('s');
$gender = request('gender');

$productsQuery = DB::table('products')
                ->where('title', 'LIKE', "%$searchTerm%");
if ($gender != "") {
    $productsQuery->where('gender', '=', "%$gender%");
}

$productsQuery->get(); 

When this method is called. I receive an empty collection.

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  • douju1365 2019-07-02 09:48
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    Actually you can do this in one query. Just like that:

    $productsQuery = DB::table('products')
    ->where('title', 'LIKE', '%'.$searchTerm.'%')
    ->where(function($query) use ($gender){
         if($gender != ""){
            $query->where('gender', '=', $gender);
          }
    })
    ->get();
    
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