How to get data from database without looping? - laravel

Question

In my controller function there is a foreach loop having query builder to get data from the database and after ending foreach loop, data is passed into views. This is looping more than 90 times.
class HomeController extends Controller {
public $menu;
public $msg;
public function __construct() {
$this->isEditor();
$this->menu = Config::get('constants.news.menu');
$this->msg = Config::get('constants.news');
}
public function index(Request $request) {
ini_set('max_execution_time', 300); //300 seconds = 5 minutes
//dd(session()->all());
$sessval = session()->all();
$uroles = DB::table('users_roles')
->where('id', Auth::user()->id)
->where('role_id','4')
//->toSql();
->get();
foreach($uroles as $key => $value)
{
$urole[]=$value->col-name;
$companiesid[]=$value->col-name2;
$rpending=DB::table('')
->select('')
->where('')
->where('')
->whereRaw("")
->count();
$abc+=$rpending;
$cactivities=DB::table('')
->select('')
->where('','=','')
->where('','=',$value->)
->where('','=',$value->)
->count();
$def+=$cactivities;
$pactivities=DB::table('')
->select('')
->where('','=','0')
->where('','=',$value->)
->where('','=',$value->)
->count();
$mno+=$pactivities;
$uactivities=DB::table('')
->select('')
->where('','=','0')
->where('','=',$value->)
->where('','=',$value->)
->whereBetween('due_date', [$tfrom, $to])
->count();
$ghi+=$uactivities;
$delayed=DB::table('')
->select('')
->where('','=','1')
->where('','=',$value->)
->where('','=',$value->)
->whereRaw('`actual_date`>`due_date` ')
//->toSql();
->count();
$jkl+=$delayed;
}
return view('view.name', compact('abc', 'def', 'ghi', 'jkl', 'mno'));
}
Any possible way to fetching the data in the background and when user loggedin it will render the view faster. Also i need to pass more data to the same view and that data is also getting from the database using forloop. How to reduce the loading time?. Please suggest any alternative way.
In view-
<div class="row">
<div class="col-lg-3 col-xs-6">
<!-- small box -->
<div class="small-box bg-green" style="background:green !important">
<div class="inner">
<h3>{{ $abc}}</h3>
<p>Comp</p>
</div>
<div class="icon">
<i class="fa fa-thumbs-up"></i>
</div>
More info <i class="fa fa-arrow-circle-right"></i>
</div>
</div>
<!-- ./col -->
<div class="col-lg-3 col-xs-6">
<!-- small box -->
<div class="small-box bg-orange" style="background: darkorange !important">
<div class="inner">
<h3>{{ $def}}</h3>
<p>Delayed</p>
</div>
<div class="icon">
<i class="fa fa-book"></i>
</div>
<a href="#" class="small-box-footer">More info <i class="fa fa-
arrow-circle-right"></i></a>
</div>
</div>
<!-- ./col -->
<div class="col-lg-3 col-xs-6">
<!-- small box -->
<div class="small-box bg-red"style="background: red !important">
<div class="inner">
<h3>{{ $ghi}}</h3>
<p>Pen</p>
</div>
<div class="icon">
<i class="fa fa-clock-o"></i>
</div>
More info <i class="fa fa-arrow-circle-right"></i>
</div>
</div>
<!-- ./col -->
<div class="col-lg-3 col-xs-6">
<!-- small box -->
<div class="small-box bg-aqua">
<div class="inner">
<h3>{{ $jkl}}</h3>
<p>Pending</p>
</div>
<div class="icon">
<i class="fa fa-user-plus"></i>
</div>
<a href="#" class="small-box-footer">More info <i class="fa fa-
arrow-circle-right"></i></a>
</div>
</div>
<!-- ./col -->
</div>

Answer 1

The issue here is with inefficient database queries. Querying within a loop usually results in poor performance.
A better approach would be to fetch all related data to user roles using SQL Joins or Eloquent Relationships.