Fetching a single table data in nested style in Laravel - laravel

Question

I am asked to load data from a single table like the following:
=================================
|id |dept | response | created_at |
=================================
|1 |FO | GOOD | 2018-05-20 |
|2 |FO | GOOD | 2018-05-20 |
|3 |IT | GOOD | 2018-05-20 |
|4 |FO | BAD | 2018-05-20 |
|5 |IT | GOOD | 2018-05-20 |
|6 |LO | BAD | 2018-05-20 |
|7 |IT | GOOD | 2018-05-20 |
|8 |IT | GOOD | 2018-05-21 |
|9 |LO | GOOD | 2018-05-21 |
=================================
they want me to display only records created_at 2018-05-20. and the desired output display in blade is like this:
FO
GOOD 2
BAD 1
IT
GOOD 3
BAD 0
LO
GOOD 0
BAD 1
when I use select distinct, it displays only one row of response data (only GOOD). The same thing happens when I use groupBy
here are my current codes:
Controller:
$date = new Carbon('2018-05-20');
$result = Result::select('dept', 'response')->where('created_at', '=', $date->toDateString())->groupby('dept')->get();
blade:
#foreach($result as $result)
{{$result->dept}}</BR>
{{$result->response}}</br></br>
#endforeach
The output I get:
FO
GOOD
IT
GOOD
LO
GOOD
I don't do the count yet because I still get this undesired result.
Is there a way to achieve the desired request with that single table?
EDIT I:
Based on Yrv16's answer, my controller goes like this:
namespace App\Http\Controllers;
use App\Result;
use Carbon\Carbon;
use Illuminate\Support\Facades\DB;
use Illuminate\Http\Request;
public function index()
{
$date = new Carbon('2018-05-20');
$results = Result::select('dept', 'response', \DB::raw('COUNT(*) as count'))
->where('created_at', '=',$date->toDateString())
->groupby('dept','response')
->get();
$results = $results->groupBy('dept');
return view('result.index', compact ('results'));
}
and my blade:
#foreach($results as $result)
{{$result->dept}}</BR>
{{$result->response}}</br></br>
#endforeach
this gives me an empty page. but when i change this where('created_at', '=', $date->toDateString()) to where('created_at', '>=', $date->toDateString()) i get this error Property [dept] does not exist on this collection instance.

Answer 1

Use groupBy for two columns dept, response:
$date = new Carbon('2018-05-20');
$results = Result::select('dept', 'response', \DB::raw('COUNT(*) as count'))
->where('created_at', '=',$date->toDateString())
->groupby('dept','response')
->get();
Also result collection you can groupBy('dept') in order to display it like you want:
$results = $results->groupBy('dept');
Blade:
#foreach($results as $dept => $result)
{{$dept}}</BR>
#foreach($result as $item)
{{$item->response}} {{ $item->count }}
#endforeach
#endforeach

Answer 2

You can use collection manipulation for that:
$results = Result::where('created_at', '2018-05-20')
->get()
->groupBy('dept')
->map(function ($item) {
return $item->groupBy('response')->map(function ($responses) {
return $responses->count();
});
});
It will give you the following results:
print_r($results->toArray());
Array (
[FO] => Array (
[GOOD] => 2
[BAD] => 1
)
[IT] => Array (
[GOOD] => 3
)
[LO] => Array (
[BAD] => 1
)
)