Laravel checkbox implementation for updating database - laravel

Question

I've been trying to make an attendance management system in Laravel.
In the attendance view,when a checkbox is checked ,the controller function is supposed to increment the appropriate database column.
I've been having some issues.Here's my code:
views:
<div class="container">
<!--<div class="row">-->
<div class="col-md-8 col-md-offset-2">
<div class="panel panel-default">
<div class="panel-heading">Take Attendance</div>
<h4><center>Teacher: {{ auth()->user()->name}}</center></h4>
<div class="form-inline">
#foreach ($second as $sec)
<br>
<div class = "form-group">
{{$sec->Roll }}
&nbsp&nbsp&nbsp&nbsp
{{ $sec->Name}}
</div>
<div class = "form-group">
<!--{{Form::checkbox('agree') }}-->
<input tabindex="1" type="checkbox" value="{{$sec->Roll}}" name="" />
</div>
#endforeach
</div>
<br>
<form action ="report_generate&<?php echo $name ?>" method = "post" enctype = "multipart/form-data" >
<!--<input type = "hidden" name = "_token" value = "{{{ csrf_token() }}}"/>-->
<div class = "form-group">
<input type="submit" value= "Submit">
<center>Report</center>
</div>
</form>
</div>
</div>
</div>
Controller(for submit button):
public function report_generate($tabu)
{
$year = DB::table('sub')->select('Year')-
>where('sub.Subject_Name','=',$tabu)->get();
$sub_id = DB::table('sub')->select('Subject_Id')-
>where('sub.Subject_Name','=',$tabu)->get();
ob_start();
echo $year;
$output=ob_get_contents();
ob_end_clean();
if ( $output=='[{"Year":1}]')
{
$req = "first";
}
elseif ( $output=='[{"Year":2}]')
{
$req = "second";
}
elseif ( $output=='[{"Year":3}]')
{
$req = "third";
}
elseif ( $output=='[{"Year":4}]')
{
$req = "fourth";
}
$final = DB::table($req)->get();
//dd($final);
//$columns = Schema::getColumnListing($req);
//dd($sub_id);
ob_start();
echo $sub_id;
//dd($sub_id);
$va=ob_get_clean();
$va = stripslashes($va);
$txt = rtrim($va,"}]");
$txt = ltrim($txt,"[{Subject_Id:");
$txt = ltrim($txt,"Subject_Id:");
$txt = explode(":",$txt);
$txt = str_replace('"','', $txt);
//dd($txt[1]);
$columns = Schema::getColumnListing($req);
//dd($columns);
//dd($txt);
foreach ($columns as $col)
{
//dd("Y");
if($col == $txt[1])
{
$got=DB::table($req)->select($col)->get();
//dd($got);
foreach($got as $g)
{
//want to increment that cell value
}
}
}
}

Answer 1

Looks like your checkboxs are outside of the form divs which is an issue. You also seem to be skipping over the Laravel features, for example having a Sub Model you can call on, or using the Request facade. Also not sure why you're using ob for those string comparisons (might actually want to look at Switch for that long elseif block) Lastly, you might want to to use a raw DB statement to do the increments within a SQL query
DB::statement("UPDATE " . $table . " set " . $column . " to " . $column . " + 1 WHERE id IN (" implode(', ', $ids) . ')")