我试图在Laravel中对分页查询结果进行排序。我需要做一个排序,在每件事情的末尾降到我的分页变量上。
例子:

//get some data attach to variable
$variable = DB::table('exampletable')
->where('id',$somevariable)
->select('id','name')
->paginate(10);

//this function will send the variable and attach **total** on each object
$variable = $this->aFunction($variable);

//What I am trying to do, THIS is where I have to sort in the data flow
$variable->sortBy('total', 'desc');

//return data in json format
return response()->json($variable);

我已经尝试过像上面所说的那样对它进行排序,但最终得到的变量只是在每个段/对象上都有名称。我试过了,这就是我一直得到的结果:
{
"0":{
      "id": "1",
      "name": "somename",
      "total": "15",
    },
"1":{
      "id": "2",
      "name": "somename2",
      "total": "100",
    },
"2":{
      "id": "3",
      "name": "somename5",
      "total": "26",
    },
}

我要达到的是这样一个结果:
"current_page": 1,
"data": [
  {
      "id": "2",
      "name": "somename2",
      "total": "100",
    },
 {
      "id": "3",
      "name": "somename5",
      "total": "26",
    },
 {
      "id": "1",
      "name": "somename",
      "total": "15",
    },
]

最佳答案

一般来说
$paginatedUsers是这里记录的LengthAwarePaginator的一个实例:
https://laravel.com/api/5.7/Illuminate/Pagination/LengthAwarePaginator.html#method_presenter
我们可以使用setCollection来更改基础集合。和items()只提取当前页上的对象。收集后,我们可以随意分类。

$paginatedUsers = User::paginate(3)

$paginatedUsers->setCollection(
    collect(
        collect($paginatedUsers->items())->sortBy('name')
    )->values()
);

完整的解决方案(假设aFunction仍然返回一个Paginator对象)
//get some data attach to variable
$variable = DB::table('exampletable')
->where('id',$somevariable)
->select('id','name')
->paginate(10);

//this function will send the variable and attach **total** on each object
$variable = $this->aFunction($variable);

$variable->setCollection(
    collect(
        collect($variable->items())->sortByDesc('total')
    )->values()
);

//return data in json format
return response()->json($variable);

关于mysql - 在Laravel中对分页变量进行排序,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/53474652/

10-14 13:54
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