Laravel创建一个JSON数组

Question

尝试为Morris.js环形图创建一个JSON数组，但不能想出任何方法来获取正确的格式。有小费吗？

我的控制器：

$user = User::find((Auth::user()->id)); 
    $budget = $user->budget()->get(); 
    $labels = ['rent', 'heating', 'utilities', 'internet_tv', 'phone', 'food', 'sweets', 'alcohol_cigs', 'insurance'  , 'loans', 'finance_other', 'cosmetics' 
       , 'medicine', 'clothes_shoes', 'accessories', 'electronics', 'school', 'entertainment', 'food_out', 'holidays', 'books', 'pets', 'gifts', 'car', 'other']; 
    $data2 = []; 
    foreach ($labels as $label) 
    { 
     $data2['label'][] = $label; 
     $data2['value'][] = $budget->sum($label); 
    } 
    $data2 = json_encode($data2); 

什么我得到：

'{"label":["rent","heating","utilities","internet_tv" ...],"value":[435,30,0,0 ...]}' 

我想：

'[{"label":"rent","value":"435"},{"label":"heating","value":"30"},{"label":"utilities","value":"0"},{"label":"internet_tv","value":"0"} ...]' 

Answer 1

您的代码创建两个子阵的$data2阵列，一个label和一个value。然后，数据被一次又一次地推送到这两个数组中。

相反，你要创建一个新的阵列，推动一个到$data2阵列，像这样：

$data2 = []; 
foreach ($labels as $label) 
{ 
    $data2[] = [ 
     'label' => $label, 
     'value' => $budget->sum($label) 
    ]; 
}