Passing checkbox value from view to controller - laravel

Question

How to pass checkbox value from views to controller so that I can compare the checked/unchecked values (for database update)?
Views:
#foreach ($second as $sec)
<br>
<div class = "form-group">
{{$sec->Roll }}
&nbsp&nbsp&nbsp&nbsp
{{ $sec->Name}}
</div>
<div class = "form-group">
<input tabindex="1" type="checkbox" value="{{$sec->Roll}}" name="1" />
</div>
#endforeach
Controller:
foreach ($columns as $col) {
//dd("Y");
if($col == $txt[1]) {
$got=DB::table($req)->select($col)->get();
//dd($got);
//COMPARE CHECKBOX VALUE "CHECKED/UNCHECKED" WITH ITS DEFAULT VALUE
DB::statement("UPDATE " . $req . " set " . $got . " to " . $got . " + 1 WHERE" .$req->Roll . " IN ".( implode(',', $req)));
}
}

Answer 1

Ps: This might be applicable only if my description matches what you are trying to do, because your question seems so.
One of the ways I have done it is not to put any value in the checkbox element. Then inspect if the value returned is string with is_string($the_variable) or not. That is, instead of:
<input tabindex="1" type="checkbox" value="{{$sec->Roll}}" name="checkbox_1" />
I'll have:
<input tabindex="1" type="checkbox" name="checkbox_1" />
This might not be an ideal solution, but a bit curious if you have tried it.
So in the controller, any checked checkbox would have 'on' as the value, while unchecked one would have null:
so if I do in my controller:
return request()->all();
I should get the values of the checked as 'on' and the values of the unchecked as null
So i'll do for example in controller:
if(is_string(request()->get('checkbox_1))) {
//checked
else {
// unchecked
}
Hope this is clear now.
Just for an update:
One other way to do this is to pass the key of the column you are trying to update when making the foreach, so you will have something like this:
#foreach ($second as $key=> $sec)
then on the checkbox it will serve as different names:
<input tabindex="1" type="checkbox" name="{{ $key }}" />
This way if you do return request()->all(); at the first in your controller, you can then tell if something else is wrong or not.
Please make sure you note the $key in that foreach() so to be sure you are doing the right thing.