Laravel 控制器中的 foreach
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foreach in laravel controller
提问by Just User
I try to loop over foreach in my Registration Controller as the following
我尝试在我的注册控制器中循环 foreach，如下所示
$subjectStartID = Input::get('substID');
$subjectStart = SubjectStart::find($subjectStartID);
//To get division_ids by the relationships using SubjectStartID
$divisionIDs =$subjectStart->teachersubject->subject->divisions ;
// loop over $divisionIDs to get div_ids
foreach ($divisionID as $div)
{
$div->id ;
}
return var_dump($div->id);
OR
或者
return var_dump([$div->id]);
The isuue that the result of the loop get the last id only ,
for example
if the div_ids (1,2) the result is (2)
循环的结果只得到最后一个id的问题，
例如如果div_ids(1,2)结果是(2)
i need foreach to get the div_ids to use it in the following joinQuery
我需要 foreach 来获取 div_ids 以在以下 joinQuery 中使用它
$check = Registration::join('student', 'student.id' ,'=' , 'registration.student_id')
->join('division', 'division.id' ,'=' , 'student.division_id')
->where('student.id' , $registerID->student_id)
->whereIn('student.division_id',[$div->id])->get();
Any Suggestions ?
有什么建议 ？
回答by Mohd Abdul Mujib
I can't say about laravel, but from a phpstandpoint, you should use a container array to store all the ids returned in the foreach loop.
我不能说 laravel，但从一个php角度来看，您应该使用容器数组来存储在 foreach 循环中返回的所有 id。
imho, so your code should look like the following...
恕我直言，所以你的代码应该如下所示......
$subjectStartID = Input::get('substID');
$subjectStart = SubjectStart::find($subjectStartID);
//To get division_ids by the relationships using SubjectStartID
$divisionIDs =$subjectStart->teachersubject->subject->divisions ;
$studivs = array();
// loop over $divisionIDs to get div_ids
foreach ($divisionID as $div)
{
$studivs[] = $div->id ;
}
So now the variable $studivshas all the ids that you need.
所以现在该变量$studivs具有您需要的所有 ID。
