Question

在我目前被困的地方。我正在做多种方法，我正在对同一个表执行不同的查询：

public function totalOfA()
{
    return $a = Stocks::where('user_id','=', $this->employee->id)
        ->where('category','=','a')
        ->pluck('qty')
        ->sum();
}

public function totalOfB()
{
    return $a = Stocks::where('user_id','=', $this->employee->id)
        ->where('category','=','a')
        ->pluck('qty')
        ->sum();
}

我试图寻找一种方法来总结所有功能

public function totalStocks()
{
    $stocks = Stocks::where('user_id','=', $this->employee->id)
        ->get();

    $a = $stocks::where('category', '=', 'a')
        ->pluck('qty')
        ->sum();

    $b = $stocks::where('category', '=', 'b')
        ->pluck('qty')
        ->sum();

    return $a and $b
}

所以我可以从视图中调用它作为totalstocks（） - ＆gt; a或者totalstocks（） - ＆gt; b之类的东西。

Answer 1

你不能这样打电话。你可以创建一个aray，或者你可以单独传递来查看

# This class contains the x and y values for a grid
class MapTile:
    def __init__(self, x, y):
        self.x = x
        self.y = y

# basic char class containing position
class Character:
    def __init__(self, name, hp, x, y):
        self.name = name
        self.hp = hp
        self.x = x
        self.y = y

    # movement func
    def Move(self, Direction):
        if Direction.upper() == "UP":
            if self.y > 1:
                self.y -= 1
        elif Direction.upper() == "LEFT":
            if self.x > 1:
                self.x -= 1
        elif Direction.upper() == "RIGHT":
            if self.x < 10:
                self.x += 1
        elif Direction.upper() == "DOWN":
            if self.y < 10:
                self.y += 1

    def __str__(self):
        return "{}\n========\nHP = {}\nX = {}\nY = {}".format(self.name,
                                                              self.hp,
                                                              self.x,
                                                              self.y)

现在您可以在视图中访问$ a，$ b

public function totalStocks()
{
    $stocks = Stocks::where('user_id','=', $this->employee->id)
        ->get();

    $a = $stocks::where('category', '=', 'a')
        ->pluck('qty')
        ->sum();

    $b = $stocks::where('category', '=', 'b')
        ->pluck('qty')
        ->sum();

    return view('home',['stocks'=> $stocks,'a'=>$a,'b'=>$b]);

}

因此您可以访问public function totalStocks() { $data['stocks'] = Stocks::where('user_id','=', $this->employee->id) ->get(); $data['a'] = $stocks::where('category', '=', 'a') ->pluck('qty') ->sum(); $data['b'] = $stocks::where('category', '=', 'b') ->pluck('qty') ->sum(); return view('home',['data'=>$data]); }

等视图

Answer 2

试试这个：

 $x = array(
        'a' => $a,
        'b' => $b,
    );
return (object) $x

Answer 3

可能的解决方案是在类中定义私有/受保护变量为a和b，在方法totalStocks()中可以为它们设置值。

所以你的功能看起来像这样：

public function totalStocks()
{
    $stocks = Stocks::where('user_id','=', $this->employee->id)
        ->get();

    $this->a = $stocks::where('category', '=', 'a')
        ->pluck('qty')
        ->sum();

    $this->b = $stocks::where('category', '=', 'b')
        ->pluck('qty')
        ->sum();

    // Return optional
    return $this;
}

因此，无论何时使用类，您都可以访问$this->a和$this->b作为类的属性。

Answer 4

试试这个：

function totalStocks() {
   $a = 1;
   $b = 2;

   return  [$a, $b];
}

list($valueA, $valueB) = totalStocks();
echo $valueA; //1
echo $valueB; //2

Laravel - 在一个方法中返回多个值

4 个答案: