Conditional (ternary) operator in Laravel blade

Question

I am trying to add conditional (ternary) operator in the blade to Laravel like:

<select name="staff" id="staff" class="form-control placeholder>
  <option value="0">{{ __('messages.Select Staff') }}</option>
  @if($staff != "Empty Staff")
   @foreach ($staff as $item)
    <option value="{{ $item->id}}" {{$item->stafftime->states == 'open' ? 'disabled' : ''}}>{{$item->name}}</option>
   @endforeach
   @else
   <option value='0'> __('messages.Empty Staff')</option>
@endif
</select>

in my model staff and stafftime like blow:

    protected $table = "stafftimes";

    protected $fillable = [
        'id', 'starttime', 'endtime', 'states', 'staff_id', 'created_at', 'updated_at'
    ];

    protected $hidden = [];  // Hide The Variable from select

    public function staff()
    {
        return $this->belongsTo('App\Models\Staff', 'staff_id', 'id');
    }

and in my staff model like:

    protected $table = "staffs";

    protected $fillable = [
        'id', 'name', 'mobile'
    ];

    protected $hidden = [];  // Hide The Variable from select


    public $timestamps = false;

    public function stafftime()
    {
        return $this->hasMany('App\Models\Stafftime', 'staff_id', 'id');
    }

I have an error

Property [states] does not exist on this collection instance

Answer 1

You are accessing a Collection that could potentially contain many Model instances when you access the dynamic property stafftime on a Staff model. If you want to know if any of those StaffTime instances has the attribute 'states' set to 'open' you could use the contains method of the Collection class:

$item->stafftime->toBase()->contains('states', 'open')

This would give you a boolean to use for your ternary condition.

The reason toBase() is called there is because an Eloquent Collection (which the realtionship uses) overrides the contains method to have different functionality, so we want to convert the Eloquent Collection to a regular Collection to be able to use the normal contains functionality.

Laravel 8.x Docs - Collections - Available Methods - contains