I've got this in my Laravel webapp:
@foreach($mentors as $mentor)
@foreach($mentor->intern as $intern)
<tr class="table-row-link" data-href="/werknemer/{!! $intern->employee->EmployeeId !!}">
<td>{{ $intern->employee->FirstName }}</td>
<td>{{ $intern->employee->LastName }}</td>
</tr>
@endforeach
@endforeach
How could I check if there are any $mentors->intern->employee
?
When I do :
@if(count($mentors))
It does not check for that.
This question is related to
php
laravel
laravel-5.2
Starting from Laravel 5.3 you can simply use :
if ($mentor->isNotEmpty()) {
//do something.
}
Documentation https://laravel.com/docs/5.5/collections#method-isnotempty
I prefer
(!$mentor)
Is more effective and accurate
From php7
you can use Null Coalesce Opperator:
$employee = $mentors->intern ?? $mentors->intern->employee
This will return Null
or the employee.
To determine if there are any results you can do any of the following:
if ($mentor->first()) { }
if (!$mentor->isEmpty()) { }
if ($mentor->count()) { }
if (count($mentor)) { }
if ($mentor->isNotEmpty()) { }
Notes / References
->first()
https://laravel.com/api/5.7/Illuminate/Database/Eloquent/Collection.html#method_first
isEmpty()
https://laravel.com/api/5.7/Illuminate/Database/Eloquent/Collection.html#method_isEmpty
->count()
https://laravel.com/api/5.7/Illuminate/Database/Eloquent/Collection.html#method_count
count($mentors)
works because the Collection implements Countable and an internal count() method:
https://laravel.com/api/5.7/Illuminate/Database/Eloquent/Collection.html#method_count
isNotEmpty()
https://laravel.com/docs/5.7/collections#method-isnotempty
So what you can do is :
if (!$mentors->intern->employee->isEmpty()) { }
This is the fastest way:
if ($coll->isEmpty()) {...}
Other solutions like count
do a bit more than you need which costs slightly more time.
Plus, the isEmpty()
name quite precisely describes what you want to check there so your code will be more readable.
This is the best solution I found so far.
in blade
@if($mentors->count() == 0)
<td colspan="5" class="text-center">
Nothing Found
</td>
@endif
in controller
if ($mentors->count() == 0) {
return "Nothing Found";
}
Source: Stackoverflow.com