Controller-Method with type hinting give empty eloquent object

Hi all. I think the title says it all:

routes.php

Route::group([ 'middleware' => 'web' ], function () { Route::resource('offertype', 'OfferTypeController'); });

php artisan route:list

+--------+-----------+----------------------------+-------------------+-----------------------------------------------------------------+------------+ | Domain | Method | URI | Name | Action | Middleware | +--------+-----------+----------------------------+-------------------+-----------------------------------------------------------------+------------+ | | GET|HEAD | / | | Closure | | | | GET|HEAD | offertype | offertype.index | App\Http\Controllers\OfferTypeController@index | web | | | POST | offertype | offertype.store | App\Http\Controllers\OfferTypeController@store | web | | | GET|HEAD | offertype/create | offertype.create | App\Http\Controllers\OfferTypeController@create | web | | | GET|HEAD | offertype/{offertype} | offertype.show | App\Http\Controllers\OfferTypeController@show | web | | | PUT|PATCH | offertype/{offertype} | offertype.update | App\Http\Controllers\OfferTypeController@update | web | | | DELETE | offertype/{offertype} | offertype.destroy | App\Http\Controllers\OfferTypeController@destroy | web | | | GET|HEAD | offertype/{offertype}/edit | offertype.edit | App\Http\Controllers\OfferTypeController@edit | web | +--------+-----------+----------------------------+-------------------+-----------------------------------------------------------------+------------+

OfferTypeController (example 1)

/**
* Show the form for editing the specified resource.
*
* @param  OfferType $offerType
* @return \Illuminate\Http\Response
*/
public function edit(OfferType $offerType)
{ 
    dd($offerType);
    return view('offertype.edit', compact('offerType'));
}

= Wrong - empty eloquent object:

OfferType {#234 ▼

#fillable: array:1 [▼ 0 => "name" ]

#connection: null

#table: null

#primaryKey: "id"

#perPage: 15

+incrementing: true

+timestamps: true

#attributes: []

#original: []

#relations: []

#hidden: []

#visible: []

#appends: []

#guarded: array:1 [▼ 0 => "*" ]

#dates: []

#dateFormat: null

#casts: []

#touches: []

#observables: []

#with: []

#morphClass: null

+exists: false

+wasRecentlyCreated: false

}

OfferTypeController (example 2)

/**
* Show the form for editing the specified resource.
*
* @param  int $offerType
* @return \Illuminate\Http\Response
*/
public function edit($offerType)
{
    dd(OfferType::find($offerType));

    return view('offertype.edit', compact('offerType'));
}

= Correct - filled eloquent object:

OfferType {#239 ▼ #fillable: array:1 [▼ 0 => "name" ] #connection: null

#table: null

#primaryKey: "id"

#perPage: 15

+incrementing: true

+timestamps: true

**#attributes: array:4 [▼

"id" => 1

"created_at" => "2016-03-27 16:08:28"

"updated_at" => "2016-03-27 16:08:28"

"name" => "First Type"

] #original: array:4 [▼

"id" => 1

"created_at" => "2016-03-27 16:08:28"

"updated_at" => "2016-03-27 16:08:28"

"name" => "First Type"

]** #relations: []

#hidden: []

#visible: []

#appends: []

#guarded: array:1 [▼ 0 => "*" ]

#dates: []

#dateFormat: null

#casts: []

#touches: []

#observables: []

#with: []

#morphClass: null

+exists: true

+wasRecentlyCreated: false

}

OfferType.php

<?php

namespace App;

use Illuminate\Database\Eloquent\Model;

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

    public function offers()
    {
        $this->hasMany(Offer::class);
    }
}

Other things

Out of desperation, I have already done the following:

• php artisan clear-compiled
• php artisan optimize
• composer dump-autoload -o
• php artisan cache:clear
• php artisan view:clear
• php artisan route:clear
• restart the server

I don't have a plan where I can find the problem. Please, help me.*