from django.views.generic import View

from django.http import JsonResponse

from cards_api.models import Card

class CardsListJsonView(View):

DEFAULT_CARDS_AMOUNT = '100'

def get(self, request):

first_element = int(request.GET.get('from', '0'))

last_element = int(request.GET.get('to', self.DEFAULT_CARDS_AMOUNT))

cards = self.fetch_cards(first_element, last_element)

return JsonResponse({

'data': [c.to_dict() for c in cards],

'meta': {

'from': first_element,

'to': last_element

},

})

def fetch_cards(self, first_element, last_element):

return Card.objects.all()[first_element:last_element]