如何修复 "Call to a member function get() on array" ：Laravel 5.4

Question

我使用 maatwebsite/laravel-excel 从数据库下载我生成数据的文件时遇到问题。错误：调用数组的成员函数 get()。

以前，当我只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查询时 "as" 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);
}

Answer 1

$temp = DB::select(DB::raw("select regionalid,
    nvl(sum(case when lastactiontype='0' then totalcharge end),0) as creditlimit_usage, 
    count(case when lastactiontype='0' then msisdn end) as creditlimit_rec,
    from alarms_v2
    where alarmdate = '$today'
    -- fatal error exception :Call to a member function get() on array --
    group by regionalid order by regionalid"))->get();

这里不需要调用get()方法。因为 select() 方法已经执行了查询和 return 结果数组。所以，只需按照以下步骤操作：

$temp = DB::select(DB::raw("select regionalid,
        nvl(sum(case when lastactiontype='0' then totalcharge end),0) as creditlimit_usage, 
        count(case when lastactiontype='0' then msisdn end) as creditlimit_rec,
        from alarms_v2
        where alarmdate = '$today'
        group by regionalid order by regionalid"));

如何修复 "Call to a member function get() on array" ：Laravel 5.4

How to fix "Call to a member function get() on array" : Laravel 5.4

php

csv

report

laravel

maatwebsite-excel