如何在Laravel中将数据库字段值增加1 [英] How to increment database field values by 1 in Laravel
本文介绍了如何在Laravel中将数据库字段值增加1的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我的餐桌学生出勤率.
字段/数据示例
id | studid | cls_id | smonth | syear | total_p | total_a
1 | 20 | 2 | 08 | 2015 | 2 | 1
2 | 21 | 2 | 08 | 2015 | 1 | 0
3 | 22 | 2 | 08 | 2015 | 2 | 1
我想检查最后一次更新中每个学生的total_p
和total_a
值是多少,然后递增1.
I want, to check what is the total_p
and total_a
value of each students in last update and then increment 1.
如果我输入的两个学生都是present = 1
,那么我要total_p value 20=3, 21=2, 22=3
If I am enter the both students are present = 1
so I want total_p value 20=3, 21=2, 22=3
如何获取数据库字段值并递增1.?
How to get database field values and increment 1's.?
我的控制器
$present = Input::get($student->id);
if ($checkatt)
{
if ($present == 1)
{
DB::table($wys_total_attend_table)->where('studid', $student->id)
->where('smonth', $date_exploded[1])
->where('syear', $date_exploded[2])
->where('stotal_p', 1)
->update(array(
'stotal_p' => 1 + 1,
));
DB::table($wys_total_attend_table)->where('studid', $student->id)
->where('smonth', $date_exploded[1])
->where('syear', $date_exploded[2])
->where('stotal_p', 0)
->update(array(
'stotal_p' => 1,
'stotal_a' => 0,
));
} elseif ($present == 0)
{
DB::table($wys_total_attend_table)->where('studid', $student->id)
->where('smonth', $date_exploded[1])
->where('syear', $date_exploded[2])
->where('stotal_a', 1)
->update(array(
'stotal_a' => 1 + 1,
));
DB::table($wys_total_attend_table)->where('studid', $student->id)
->where('smonth', $date_exploded[1])
->where('syear', $date_exploded[2])
->where('stotal_a', 0)
->update(array(
'stotal_a' => 1,
));
DB::table($wys_total_attend_table)->where('studid', $student->id)
->where('smonth', $date_exploded[1])
->where('syear', $date_exploded[2])
->where('stotal_p', 1)
->where('stotal_a', 0)
->update(array(
'stotal_a' => 0 + 1,
));
}
}
推荐答案
我认为您只是想更新total_p和total_a列的每条记录,只需使其简单即可:
I think u just want to update each record of total_p and total_a column just make it simple:
//get the id of student
$student_id = Input::get('student_id');
$present = Input::get('status'); //dropdown value 0,1
//You need a model for your table let say:
#Student.php
<?php
class Student extends Eloquent{
protected $table = 'students'; //table name
}
//Your Controller codes
public function findStudent($id, $status){
$query=Student::find($id);
if($query->count() && $status==1 ){ //status 1 = present
$query->total_p += 1; //plus one value in the total_p column in the tbl.
$query->save();
}else{
$query->total_a +=1;
$query->save();
}
}
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