（（地点和地点）或（地点和地点））Laravel 5.2

Question

我正在尝试创建 ( (Where and Where) OR (Where and Where) ) 经过大量搜索后，我发现了这个

    $sender = \App\User::where('username','=',$username)->firstOrFail();
    $receiver = Auth::user();
    $messages = \App\Message::Where(function($query)
                              {
                                  $query->where("sender",$sender->id)
                                        ->where("receiver",$receiver->id);
                              })
                              ->orWhere(function($query)
                              {
                                  $query->Where("sender",$receiver->id)
                                        ->Where("receiver",$sender->id);
                              })
                              ->get();

但它告诉我 $sender 和 $receiver 变量未定义，请帮忙，我正在尝试显示两个用户的消息，我还想我可以单独获取第一个（where and where）然后获取第二个然后我将它们合并。

Answer 1

要在 Closure 中使用 $send 和 $receiver，请执行以下操作；

function ($query) use($sender, $receiver){

}

允许您访问该函数范围内的变量。

所以你的解决方案变成了；

$messages = \App\Message::Where(function($query) use ($sender, $receiver)
                          {
                              $query->where("sender",$sender->id)
                                    ->where("receiver",$receiver->id);
                          })
                          ->orWhere(function($query) use ($sender, $receiver)
                          {
                              $query->Where("sender",$receiver->id)
                                    ->Where("receiver",$sender->id);
                          })
                          ->get();

Answer 2

您需要通过 use:

传递变量

$messages = \App\Message::Where(function($query) use ($sender, $receiver)
                          {
                              $query->where("sender",$sender->id)
                                    ->where("receiver",$receiver->id);
                          })
                          ->orWhere(function($query) use ($sender, $receiver)
                          {
                              $query->Where("sender",$receiver->id)
                                    ->Where("receiver",$sender->id);
                          })
                          ->get();

（（地点和地点）或（地点和地点））Laravel 5.2

( (Where and Where) OR (Where and Where) ) Laravel 5.2

php

where-clause

eloquent

laravel-5.2