DropDown list for foreign key - php

Question

I would like to learn to create a dropdown list with a foreign key on Laravel.
For information, I have a table named series with 3 fields id, name, fk_mark.
Then, I have another table named marks with 2 fields id, name_mark.
My create works correctly, here is the proof.
I am stuck about the dropdownlist, what is the syntax please for my foreign key ?
<fieldset class="form-group">
<label for="form-group-input-1">Name serie</label>
<input type="text" name="name" class="form-control" id="form-group-input-1">
</fieldset>
<fieldset class="form-group">
<label for="form-group-input-1">FK Mark</label>
<input type="text" name="fk_mark" class="form-control" id="form-group-input-1">
</fieldset>
I have tried this but without result...
<div class="form-group">
<label for="company-content">Select compagny</label>
<select name="fk_mark" class="form-control">
#foreach($series as $serie)
<option value="{{$serie->id}}"> {{$serie->name}} </option>
#endforeach
</select>
</div>
Here is my Models
Model Mark
class Mark extends Model
{
protected $fillable = ['name_mark'];
public function series(){
return $this->hasMany('App\Serie', 'fk_mark');
}
}
Model Serie
class Serie extends Model
{
protected $fillable = ['name', 'fk_mark'];
public function marks(){
return $this->belongsTo('App\Mark', 'fk_mark');
}
}
SerieController
public function index()
{
$series = Serie::oldest()->paginate(5);
return view('admin.series.index', compact('series'))
->with('i', (request()->input('page', 1)-1)*5);
}
public function create()
{
return view('admin.series.create');
}
public function store(Request $request)
{
$request->validate([
'name' => 'required',
'fk_mark' => 'required'
]);
Serie::create($request->all());
return redirect()->route('series.index')
->with('success', 'save');
}
Thank you very much for your help.