为foreach（）提供了无效的参数

Question

Newbie here. I've been working on a one to many relationship in Laravel 5.4. I'm working on reading the relationship between User and State. I keep getting this error. I have data in the tables. Here is the view:

@foreach ($user->states as $note)

  <li>{{ $note->name }}</li>

@endforeach

Here is the User model:

class User extends Model
{

    use SoftDeletes;

    public function state(){

      return $this->belongsTo(State::class);

    }

    public function role(){

      return $this->belongsTo(Role::class);

    }

    public function district(){

      return $this->belongsTo(District::class);

    }

Here is the State model:

class State extends Model
{
    protected $fillable = [
      'name'
    ];

    public function users(){

      return $this->hasMany(User::class);
    }
}

Answer 1

Check array or object count before applying foreach loop. It is really a bad practice of using loop without checking the array count.

@if(isset($user->states) && count($user->states) > 0)
  @foreach ($user->states as $state)
     <li>{{ $state->name }}</li>
   @endforeach
@else
   No Records Found 
@endif

Answer 2

Check get results is not a blank $results != FALSE You can convert this snippet in laravel way

<?php
    if($user->states != FALSE){
        foreach ($user->states as $note){
            echo '<li>'.$note->name.'</li>';
        }
    }else{
        echo 'No Results Found!';
    }
?>