PHP Laravel - Nested blade loop requiring SQL query - php

Question

I am trying to return a loop to my blade template file with below result:
Main Name
Sub name #1
Sub name #2
Main Name
Sub name #1
Sub name #2
etc..
I have created a controller for this:
MergerController.php
public function index()
{
$MainOrganisations = DB::table('test')
->select('address', 'code', DB::raw('count(*) as amount'))
->where('code', 'LIKE', '64%')
->groupBy('address')
->orderBy('amount', 'desc')
->get();
foreach($MainOrganisations as $value){
$SubOrganisations = DB::table('test')
->select('name', 'code')
->where('address', $value->address)
->where('code', 'NOT LIKE', '64%')
->get();
}
$data = [
'MainOrganisations' => $MainOrganisations,
'SubOrganisations' => $SubOrganisations,
];
#Return data to our view
return view('merger.list')->with($data);
}
Then, inside my view file, I try to show this data:
list.blade.php
<table>
#foreach ($MainOrganisations as $Main)
<thead>
<th colspan="2">{{ $Main->address }}</th>
</thead>
<thead>
<th>Name</th>
<th>Code</th>
</thead>
<tbody>
#foreach($SubOrganisations as $Sub)
<tr>
<td>{{ $Sub->name }}</td>
</tr>
#endforeach
</tbody>
#endforeach
</table>
However, above only return the first result from $SubOrganisations, and then loops ONLY that result in my nested foreach:
#foreach($SubOrganisations as $Sub)
<tr>
<td>{{ $Sub->name }}</td>
</tr>
#endforeach
Returns:
Sub name #1
Sub name #1
Sub name #1

Answer 1

The way you are looping through each data for sub organization is wrong. Its better yo use eloquent relationship with eager loading for better performance.
Change your controller code:
public function index()
{
$MainOrganisations = DB::table('test')
->select('address', 'code', DB::raw('count(*) as amount'))
->where('code', 'LIKE', '64%')
->groupBy('address')
->orderBy('amount', 'desc')
->get();
foreach($MainOrganisations as $key => $MainOrganisation){
$SubOrganisations = DB::table('test')
->select('name', 'code')
->where('address', $MainOrganisation->address)
->where('code', 'NOT LIKE', '64%')
->get();
$MainOrganisation->subOrganisations = $SubOrganisations;
}
$data = [
'MainOrganisations' => $MainOrganisations
];
#Return data to our view
return view('merger.list')->with($data);
}
In you view:
<table>
#foreach ($MainOrganisations as $Main)
<thead>
<th colspan="2">{{ $Main->address }}</th>
</thead>
<thead>
<th>Name</th>
<th>Code</th>
</thead>
<tbody>
#foreach($Main->subOrganisations as $Sub)
<tr>
<td>{{ $Sub->name }}</td>
</tr>
#endforeach
</tbody>
#endforeach
</table>