@if($availableCities = GetAvailableCities())
@php($citiesOfPostIds = ($post->id) ? $post->cities()->pluck('city_id')->toArray() : [])
@foreach($availableCities as $key=>$city)
id, $citiesOfPostIds)) name="cities[{{ $key }}]" class="form-check-input" type="checkbox" value="{{ $city->id }}" id="city_{{ $city->id }}">
@endforeach
@endif