我在下载我生成的数据的文件时遇到问题,使用 maatwebsite/laravel-excel 从数据库中下载。错误:调用数组上的成员函数 get((。
以前,当我仅使用一个字段从数据库中选择数据时,文件可以生成(.csv(。但是当我尝试使用别名"as"进行查询时,无法获取数据。
public function getdoc($type)
{
-- with this query : success --
//$temp = AlarmV2::select('msisdn')->get();
$today = "20181008";
-- with this query : error --
$temp = DB::select(DB::raw("select regionalid,
nvl(sum(case when lastactiontype='0' then totalcharge end),0) as creditlimit_usage,
count(case when lastactiontype='0' then msisdn end) as creditlimit_rec,
from alarms_v2
where alarmdate = '$today'
-- fatal error exception :Call to a member function get() on array --
group by regionalid order by regionalid"))->get();
return Excel::create('datadoc', function ($excel) use ($temp) {
$excel->sheet('mySheet', function ($sheet) use ($temp) {
$sheet->fromArray($temp);
});
})->download($type);
}
$temp = DB::select(DB::raw("select regionalid,
nvl(sum(case when lastactiontype='0' then totalcharge end),0) as creditlimit_usage,
count(case when lastactiontype='0' then msisdn end) as creditlimit_rec,
from alarms_v2
where alarmdate = '$today'
-- fatal error exception :Call to a member function get() on array --
group by regionalid order by regionalid"))->get();
在这里,您无需调用 get()
方法。因为 select(( 方法已经执行了查询并返回结果数组。所以,就像下面一样:
$temp = DB::select(DB::raw("select regionalid,
nvl(sum(case when lastactiontype='0' then totalcharge end),0) as creditlimit_usage,
count(case when lastactiontype='0' then msisdn end) as creditlimit_rec,
from alarms_v2
where alarmdate = '$today'
group by regionalid order by regionalid"));