Adding values of radio buttons to array - php

Question

I'm trying to make student skip form and adding values to array, but there is "Undefined offset: 3" error.
Here is the controller:
public function skip(Request $request, $data = array())
{
$students = Student::where('group_id', 1)->get();
$result=[];
if ($request->has('submit')) {
foreach($students as $student) {
array_push($result, $data[$student->id]);
}}
return view ('skip', compact('students', 'result'));
}
}
And view:
<form method="POST" action="">
#csrf
#foreach($students as $student)
<div class="radiobtns-group">
<div class="btn-group btn-group-toggle" data-toggle="buttons">
{{$student->id}}
<label class="btn btn-success">
<input type="radio" name="{{$student->id}}" value="1" autocomplete="off" checked>Yes
</label>
<label class="btn btn-danger">
<input type="radio" name="{{$student->id}}" value="0" autocomplete="off">No
</label>
</div>
</div>
#endforeach
</div>
<button name='submit' type="submit" class="btn btn-primary">
Add
</button>
</form>
{{print_r($result)}}
I know, it needs to be done in JS, but I don't know it yet. Maybe you can help or guide in other ways to solve it.
Thank You!

Answer 1

You don't need $data, you need to get it from $request object.
And you need to specify your radio inputs name and value correctly like this.
I will show how to achieve it below.
#foreach($students as $key => $student)
<div class="radiobtns-group">
<div class="btn-group btn-group-toggle" data-toggle="buttons">
{{$student->id}}
<label class="btn btn-success">
<input type="radio" name="student-{{$key}}" value="1"
autocomplete="off" checked>Yes
</label>
<label class="btn btn-danger">
<input type="radio" name="student-{{$key}}" value="0"
autocomplete="off">No
</label>
</div>
</div>
#endforeach
And now you can receive student-$key(it can be like student-0, student-1 etc.) property in your $request option.
Now you can iterate throw your database students and do like below.
public function skip(Request $request)
{
$students = Student::where('group_id', 1)->get();
$result = [];
if ($request->has('submit')) {
foreach($students as $key => $student) {
if(!$request->has("student-$key")) continue; // In case when none answered
$result[$student->id] = $request->get("student-$key");
}
}
return view ('skip', compact('students', 'result'));
}
So we have collected $result which key is student id and value is 1 or 0.