有没有办法在没有数据的情况下连续数月返回0

Question

我使用Chart.js来显示每个月的事务总数(count(。

$dataTotal = ModelName::select(DB::raw('count(id) as count'), DB::raw("MONTH(created_at)  as month")) 
->where('org_id', auth()->user()->org_id)
->where('result_code', 200)
->groupBy('month')
->orderBy('month')
->get()
->toArray();

查询本身很好，只是如果一个月中没有记录，那么它不会返回该月的0。这会导致图形无法正确渲染。

有人对我如何实现它以便获得完整的结果集有什么建议吗？

所需格式为：

array (
0 => 
array (
'count' => 0,
'month' => 1,
),
1 => 
array (
'count' => 5,
'month' => 2,
),
2 => 
array (
'count' => 0,
'month' => 3,
),
3 => 
array (
'count' => 4,
'month' => 4,
),
4 => 
array (
'count' => 0,
'month' => 5,
),
5 => 
array (
'count' => 4,
'month' => 6,
),
6 => 
array (
'count' => 51225,
'month' => 7,
),
7 => 
array (
'count' => 4,
'month' => 8,
),
8 => 
array (
'count' => 0,
'month' => 9,
),
9 => 
array (
'count' => 0,
'month' => 10,
),
10 => 
array (
'count' => 0,
'month' => 11,
),
11 => 
array (
'count' => 0,
'month' => 12,
),
)  

Answer 1

$monthlyArray = array();
$emptyMonth = array('count' => 0, 'month' => 0);
for($i = 1; $i <= 12; $i++){//generate an array with default values
$emptyMonth['month'] = $i;
$monthlyArray[$i-1] = $emptyMonth;
}
$dataTotal = ModelName::select(DB::raw('count(id) as count'), DB::raw("MONTH(created_at)  as month")) 
->where('org_id', auth()->user()->org_id)
->where('result_code', 200)
->groupBy('month')
->orderBy('month')// you don't really need this one 
->get()
->toArray();//fetch the results
foreach($dataTotal as $key => $array){//add the results to the default array
$monthlyArray[$array['month']-1] = $array;
}
//monthlyArray contains the data