我有一张桌子＆＃39; student_attendence＆＃39;
我想要这样
RollNo StudentName 02 13 14 15 16 17 20 Total Presents Total Absents
28 Gokul p p p p a p p 6 1
31 Goku p p p a p p p 6 1
32 Gok p p p p p a a 5 2
我想要了解每个学生的现在（p）和缺席（a）的总数。
我的控制器代码是：
$attendence_tbl = WysAttendancename::where('cls_id',$id)->first();
$wys_attendence_table = $attendence_tbl->attendance_name;
$attendance = DB::table($wys_attendence_table)
->where('amonth',$amonth)
->where('ayear',$ayear)
->groupBy('adate')
->get();
$stud_attend = DB::table($wys_attendence_table)
->where('amonth',$amonth)
->where('ayear',$ayear)
->get();
和我的view.blade php是
@foreach($students as $student)
@if($student->studcls == $id)
<tr>
<td>{{$student->id}}</td>
<td>{{$student->studname}}</td>
@foreach($stud_attend as $stud_attends)
@if($student->id == $stud_attends->studid)
@if($stud_attends->attendence == 1)
<td><font color="green" size="3">p</font></td>
@elseif($stud_attends->attendence == 0)
<td><font color="red" size="3">a</font></td>
@endif
@endif
@endforeach
<td>{{$presentsCountQuery}}</td>
<td>{{$absentsCountQuery}}</td>
</tr>
@endif
@endforeach
我也在添加此代码
foreach($students as $student){
$cunt = DB::table($wys_attendence_table)
->where('studid',$student->id)
->where('amonth',$amonth)
->where('ayear',$ayear)
->where('attendence','=',1)
->count();
var_dump($cunt);
}
进入我的控制器页面，检查礼物和缺席的总数。
我拿var_dump得到他回答int（6）int（6）int（5）
但我无法在视图页面上显示
如何在我的控制器页面中检查每个学生的当前总数（出勤率= 1）和缺席总数（出勤率= 0），以及如何显示值以查看页面？
这是我的表wys_attendence：
id studid adate amonth ayear acls_id attendence
1 28 02 07 2015 10 1
2 31 02 07 2015 10 0
4 32 02 07 2015 10 1
5 28 30 07 2015 10 0
6 31 30 07 2015 10 1
7 32 30 07 2015 10 1
9 28 31 07 2015 10 1
10 31 31 07 2015 10 1
11 32 31 07 2015 10 1
13 28 06 08 2015 10 1
14 31 06 08 2015 10 0
15 32 06 08 2015 10 1
17 28 07 08 2015 10 0
18 31 07 08 2015 10 1
19 32 07 08 2015 10 1
21 28 08 08 2015 10 1
22 31 08 08 2015 10 1
23 32 08 08 2015 10 0
24 28 12 08 2015 10 1
25 31 12 08 2015 10 1
26 32 12 08 2015 10 0
答案 0 :(得分：0)
试试这个@cnbwd：
{
"images" : [
{
"extent" : "full-screen",
"idiom" : "iphone",
"subtype" : "736h",
"filename" : "LaunchImage-800-Portrait-736h@3x.png",
"minimum-system-version" : "8.0",
"orientation" : "portrait",
"scale" : "3x"
},
{
"extent" : "full-screen",
"idiom" : "iphone",
"subtype" : "667h",
"filename" : "LaunchImage-800-667h@2x.png",
"minimum-system-version" : "8.0",
"orientation" : "portrait",
"scale" : "2x"
},
{
"orientation" : "portrait",
"idiom" : "iphone",
"extent" : "full-screen",
"minimum-system-version" : "7.0",
"filename" : "LaunchImage-700@2x.png",
"scale" : "2x"
},
{
"extent" : "full-screen",
"idiom" : "iphone",
"subtype" : "retina4",
"filename" : "LaunchImage-700-568h@2x.png",
"minimum-system-version" : "7.0",
"orientation" : "portrait",
"scale" : "2x"
},
{
"orientation" : "portrait",
"idiom" : "ipad",
"extent" : "full-screen",
"minimum-system-version" : "7.0",
"filename" : "LaunchImage-700-Portrait~ipad.png",
"scale" : "1x"
},
{
"orientation" : "landscape",
"idiom" : "ipad",
"extent" : "full-screen",
"minimum-system-version" : "7.0",
"filename" : "LaunchImage-700-Landscape~ipad.png",
"scale" : "1x"
},
{
"orientation" : "portrait",
"idiom" : "ipad",
"extent" : "full-screen",
"minimum-system-version" : "7.0",
"filename" : "LaunchImage-700-Portrait@2x~ipad.png",
"scale" : "2x"
},
{
"orientation" : "landscape",
"idiom" : "ipad",
"extent" : "full-screen",
"minimum-system-version" : "7.0",
"filename" : "LaunchImage-700-Landscape@2x~ipad.png",
"scale" : "2x"
},
{
"orientation" : "portrait",
"idiom" : "iphone",
"extent" : "full-screen",
"filename" : "LaunchImage-700.png",
"scale" : "1x"
},
{
"orientation" : "portrait",
"idiom" : "iphone",
"extent" : "full-screen",
"filename" : "LaunchImage-700@2x.png",
"scale" : "2x"
},
{
"orientation" : "portrait",
"idiom" : "iphone",
"extent" : "full-screen",
"filename" : "LaunchImage-700-568h@2x.png",
"subtype" : "retina4",
"scale" : "2x"
},
{
"orientation" : "portrait",
"idiom" : "ipad",
"extent" : "full-screen",
"filename" : "LaunchImage-700-Portrait~ipad.png",
"scale" : "1x"
},
{
"orientation" : "landscape",
"idiom" : "ipad",
"extent" : "full-screen",
"filename" : "LaunchImage-700-Landscape~ipad.png",
"scale" : "1x"
},
{
"orientation" : "portrait",
"idiom" : "ipad",
"extent" : "full-screen",
"filename" : "LaunchImage-700-Portrait@2x~ipad.png",
"scale" : "2x"
},
{
"orientation" : "landscape",
"idiom" : "ipad",
"extent" : "full-screen",
"filename" : "LaunchImage-700-Landscape@2x~ipad.png",
"scale" : "2x"
}
],
"info" : {
"version" : 1,
"author" : "xcode"
}
}
答案 1 :(得分：0)
试试这个
$attendance = DB::table($wys_attendence_table)
->select(DB::raw('count(attendence) as count_attendance'))
->where('amonth',$amonth)
->where('ayear',$ayear)
->groupBy('adate')
->get();
修改
您可以从两个查询中进行一次查询，并在一个foreach中使用它。 像这样：
$countQuery = DB::table($wys_attendence_table)
->select(DB::raw('studid, COUNT(*) AS counter'))
->groupBy('studid')
->toSql();
$stud_attend = DB::table($wys_attendence_table . ' AS table')
->leftJoin(DB::raw('(' . $countQuery . ') AS counter_table'), 'table.studid', '=', 'counter_table.studid')
->where('amonth',$amonth)
->where('ayear',$ayear)
->groupBy('adate')
->get();
EDIT2：
$presentsCountQuery = DB::table($wys_attendence_table)
->select(DB::raw('studid, COUNT(*) AS presents_counter'))
->whereRaw('attendence = 1')
->groupBy('studid')
->toSql();
$absentsCountQuery = DB::table($wys_attendence_table)
->select(DB::raw('studid, COUNT(*) AS absents_counter'))
->whereRaw('attendence = 0')
->groupBy('studid')
->toSql();
$stud_attend = DB::table($wys_attendence_table . ' AS table')
->leftJoin(DB::raw('(' . $presentsCountQuery . ') AS presents_counter_table'), 'table.studid', '=', 'presents_counter_table.studid')
->leftJoin(DB::raw('(' . $absentsCountQuery . ') AS absents_counter_table'), 'table.studid', '=', 'absents_counter_table.studid')
->where('amonth',$amonth)
->where('ayear',$ayear)
->groupBy('adate')
->get();
EDIT3：
完整代码：
$attendance = DB::table($wys_attendence_table)
->whereRaw('amonth = "'.$amonth.'"')
->whereRaw('ayear = "'.$ayear.'"')
->groupBy('adate')
->get();
$presentsCountQuery = DB::table($wys_attendence_table)
->select(DB::raw('studid, COUNT(*) AS presents_counter'))
->whereRaw('amonth = "'.$amonth.'"')
->whereRaw('ayear = "'.$ayear.'"')
->whereRaw('attendence = 1')
->groupBy('studid')
->toSql();
$absentsCountQuery = DB::table($wys_attendence_table)
->select(DB::raw('studid, COUNT(*) AS absents_counter'))
->whereRaw('amonth = "'.$amonth.'"')
->whereRaw('ayear = "'.$ayear.'"')
->whereRaw('attendence = 0')
->groupBy('studid')
->toSql();
$stud_attend = DB::table($wys_attendence_table . ' as table')
->leftJoin(DB::raw('(' . $presentsCountQuery . ') AS presents_counter_table'), 'table.studid', '=', 'presents_counter_table.studid')
->leftJoin(DB::raw('(' . $absentsCountQuery . ') AS absents_counter_table'), 'table.studid', '=', 'absents_counter_table.studid')
->where('table.amonth',$amonth)
->where('table.ayear',$ayear)
->groupBy('table.studid')
->get();
var_dump($stud_attend);