ErrorException thrown with message "Trying to get property 'subo_name' of non-object - laravel

Question

ErrorException thrown with message
"Trying to get property 'subo_name' of non-object (View:
C:\xampp\htdocs\org\resources\views\users\index.blade.php)"
Main model
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Maino extends Model
{
protected $fillable = [
'maino_name'
];
public function subo()
{
return $this->hasMany('App\Subo');
}
}
Sub model
<?php
namespace App;
use Illuminate\Database\Eloquent\Model;
class Subo extends Model
{
protected $fillable = [
'subo_name','maino_id'
];
public function maino()
{
return $this->belongsTo('App\Maino');
}
public function users()
{
return $this->hasMany('App\User');
}
}
user model
<?php
namespace App;
use Illuminate\Notifications\Notifiable;
use Illuminate\Contracts\Auth\MustVerifyEmail;
use Illuminate\Foundation\Auth\User as Authenticatable;
class User extends Authenticatable
{
use Notifiable;
/**
* The attributes that are mass assignable.
*
* #var array
*/
protected $fillable = [
'name', 'email', 'password','role_id'
];
/**
* The attributes that should be hidden for arrays.
*
* #var array
*/
protected $hidden = [
'password', 'remember_token',
];
/**
* The attributes that should be cast to native types.
*
* #var array
*/
protected $casts = [
'email_verified_at' => 'datetime',
];
public function role()
{
return $this->belongsTo('App\Role');
}
public function profile()
{
return $this->hasMany('App\Profileinfo');
}
public function suborg()
{
return $this->belongsTo('App\Subo');
}
}
UserController code
public function index()
{
// $user=User::all();
$users=User::all();
return view('users.index',compact('users'));
}
index.blade.php
#extends('mainorg.main')
#section('title','Users')
#section('content')
<!-- DataTables Example -->
#if(Session::has('status'))
<div class="alert alert-success">
<button type="button" class="close" data-dismiss="alert" aria-label="Close">
<span aria-hidden="true">×</span></button>
{{ Session::get('status') }}
</div>
#endif
<div class="card mb-3">
<div class="card-header">
<!-- <i class="fas fa-table"></i>
MainOrg --><div class="container"><button class="btn btn-primary float-right">Add SubOrg</button></div></div>
<div class="card-body">
<div class="table-responsive">
<table class="table table-bordered" id="dataTable" width="100%" cellspacing="0">
<thead>
<tr>
<th>id</th>
<th>name</th>
<th>user</th>
<th>main org</th>
<th>suborg</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</thead>
<tfoot>
<tr>
<th>id</th>
<th>name</th>
<th>user</th>
<th>main org</th>
<th>suborg</th>
<th>Edit</th>
<th>Delete</th>
</tr>
</tfoot>
#foreach($users as $user)
<tr>
<td>{{$user->id}}</td>
<td>{{$user->name}}</td>
<td>{{$user->role->role_name}}</td>
<td>{{$user->suborg->subo_name}}</td>
<td>Edit</td>
<td><form action="{{route('users.destroy',$user->id)}}" method="post">
#method('DELETE')
#csrf
<input type="submit" name="" value="DELETE" class="btn btn-danger">
</form></td>
</tr>
#endforeach
<tbody>
</tbody>
</table>
</div>
</div>
</div>
</div>
#endsection
I am facing problem regarding to this code so please help me solve this problem ......................

Answer 1

The error means that one of your $users doesn't have a suborg while looping. So {{ $user->suborg }} is null, and you can't access ->name of null. To handle this, restrict your users to only those that have a suborg, or check while looping:
public function index() {
$users=User::with('suborg')->has('suborg')->get();
return view('users.index',compact('users'));
}
Note: You can use both with and has in a single query; they do different things.
Or, while looping your users, check existence:
#foreach($users as $user)
<tr>
<td>
#if($user->suborg)
{{ $user->suborg->subo_name }}
#else
No Suborg
#endif
</td>
</tr>
#endforeach

Answer 2

When you creating relation between two or more models then you should use relational method during model use using with in your eloquent call, you can also write when you want to pass multiple like - with(['suborg', 'example']). In index method, bellow $users variable make dd($users) and check is there have any relational data. If found I think, it should work.
public function index()
{
// $user=User::all();
$users=User::with('suborg')->get();
return view('users.index',compact('users'));
}
And your index.blade.php
#foreach($users as $user)
<tr>
<td>{{$user->id}}</td>
<td>{{$user->name}}</td>
<td>{{$user->role->role_name}}</td>
<td>{{$user->suborg->subo_name || 'Not Found'}}</td>
......
#endforeach