如何在laravel 5.2中编写条件查询？

Question

如何在laravel 5.2 eloquent或query builder中编写此类查询？

$query = Customers::leftjoin('Query string');    
if(condition)
    {
        //This part added to query   
    }
    else
    {
        //This part added to query
    }
->get();

Answer 1

您必须在变量I.E中记住您的查询。像这样：

$query = Customers::leftjoin('Query string');   

if(condation){
    $query = $query->where('something', '=', 'something');
} else {
    $query = $query->where('somethingelse', '=', 'somethingelse');
}

$query = $query->get();

通常你会$query->where()-get();，这基本上是相同的，$query将保留->where()的结果，并允许你在$query进一步链接