Laravel 搜索过滤不能单过滤

Question

我有多个下拉搜索过滤器。只要我选择每个下拉列表，我就可以过滤表的所有列。如果我只选择其中一个或两个，它不会返回任何结果。有什么要补充的还是我做错了？

口才

$query = Table::when($id, function($q) use ($id){
                return $q->where('id', $id);
            })
            ->when($state, function($q) use ($state){
                return $q->where('state', $state);
            })
            ->when($country, function($q) use ($country){
                return $q->where('country', $country);
            })
            ->when($name, function($q) use ($name){
                return $q->where('name', $name);
            })
            ->when($city, function($q) use ($city){
                return $q->where('city', $city);
            })
            ->when($status, function($q) use ($status){
                return $q->where('status', $status);
            })
        ->paginate(10);

return $query;

控制器

if ($request->id || $request->state || $request->country|| $request->name || $request->city || $request->name || $request->status){
      $filter = $eloquent->getTable($request->id, $request->state, //all request);
}
else{
     $filter = $eloquent->all();
}

或者还有其他方法可以做到吗？指导和帮助将不胜感激。

Answer 1

试试这个：

$query = Model::query();

if(isset($id))
 $query->where('id', $id);
if(isset($state))
 $query->where('state', $state);
if(isset($country))
 $query->where('country', $country);
if(isset($name))
 $query->where('name', $name);
if(isset($city))
 $query->where('city', $city);
if(isset($status))
 $query->where('status', $status);
return $query->paginate(10);
 

Answer 2

首先声明您的查询，然后您可以从下拉选择中的最低值爬上条件树；

$query = Table::when($status, function($q) use ($status){
            return $q->where('status', $status);
        });

if(isset($city)) {
    $query = $query->when($city, function($q) use ($city) {
                 return $q->where('city', $city);
             });
}

if(isset($name)) {
    $query = $query->when($name, function($q) use ($name) {
                 return $q->where('name', $name);
             });
}
// climb up the condition tree you want to check from least dependent variable to most dependent variable
...
...
// return filtered results
return $query->paginate(10);