Level 102
If you have () you point to the method not the relation. It should be
dd($activity->contact->id)
Feb 24, 2020
10
Level 2
Can't Get Attribute Of Related Model
Hey All - I'm running Laravel 6.2 and am getting an error trying to get any attribute of a model through a "belongsTo" relationship. I'm using a "hasmanythrough" relationship to get activities from a user model - maybe that has something to do with it?
Also I noticed if I dump and die dd($activity->contact()) I can see the contact model but when I try dd($activity->contact()->id) it will fail. Very perplexing!
Controller:
public function index() {
$user = Auth::user();
$activities = $user->activities();
return view( 'activity.index', [ 'activities' => $activities ] );
}
Activity Model
public function contact() {
return $this->belongsTo( 'App\Contact' )->first();
}
Blade template
@if ( $activities->count() )
@foreach ( $activities as $activity )
<div class="contact route" data-url="/outreach/list?q={{ $activity->id }}">
@php dump($activity->contact()->id) @endphp
</div>
@endforeach
@endif
Level 2
That's good to know - thanks for the heads up. I remove ->first() from the relationship and tried dump($activity->contact->id) but still getting an error Trying to get property 'id' of non-object.
Level 102
Well the same issue here it seems
$user = Auth::user();
$activities = $user->activities;
Level 2
Unfortunately still not working - I've removed the User model all together and am just using $activities = \App\Activity::get() but still have the same problem.
Level 102
Also be sure that all activities have a contact
Or do
$activity->contact->id ?? ''
Level 102
Just noticed. This is also wrong. It should not have first
public function contact() {
return $this->belongsTo( 'App\Contact' );
}
Level 2
Ah! That was it! I accidentally seeded my DB with some user_id values set at 0 facepalm. Thanks so much for troubleshooting this with me - I super appreciate it!
Level 102
Happy to help. Last point. Make sure to eagerload your relations
$activities = \App\Activity::with('contact')->get()
Level 2
Does eager loading help with performance?
Level 102
Exactly. It populates the data from the start.
Without it, laravel queries the data (from the database) for each record one at the time
You can Google "laravel n+1"
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