Laravel 5.2 - How to echo a field from a relationship - php

Question

Im trying to echo the categoryid field from the with('categorys').
My appserviceprovider:
view()->composer('welcome' , function($view){
$view->with('homerings', Ring::where('homepage', '=', 1)->with('categorys')->get()->all());
});
Where i'm trying to echo it in welcome.blade.php.
#foreach($homerings as $ring)
{{ dd($ring->categorys) }}
<div class="col-md-3 col-sm-6 col-xs-6">
<a href="">
<img class="img-responsive homepage-ring" src="{{url($ring->image)}}" alt="{{$ring->title}}">
</a>
</div>
<?php
$i++;
?>
#if($i == 4)
</div>
<div class="row">
#endif
#endforeach
Normal i think it should work like:
{{ dd($ring->categorys->categoryid) }}
But this is not working.
the error:
Undefined property: Illuminate\Database\Eloquent\Collection::$categoryid (View: /resources/views/welcome.blade.php)

Answer 1

As your error tells you "Undefined property ...Collection::$categoryid". It means you are trying to access the categoryid property of a Collection object instead of a Category object.
When you defined a relationship where many can be returned (like hasMany()), Eloquent will return a Collection (more than one) of results. When you define an one-to-one relation, eloquent will return only one result and therefore the Model it is related to.
To retrieve the first model in you collection you could do something like:
$category = $ring->categorys()->first(); // Get first
echo $category->categoryid;
However since your relation will return many I think you would like to have something like:
$categories = $ring->categorys; // Get all categories
#foreach ($categories as $category) // Loop
{{ $category->categoryid }} // Echo categoryid
#endforeach
Hope this helps :)
Ps: the plural form of category is categories