newmediamonitoring/polls/views/download.py

import os
from django.conf import settings
from django.http import Http404, HttpResponse, JsonResponse
from django.shortcuts import render
from polls.models import AppVersion


def app_intro(request):
    return render(request, 'polls/app.html')


def download(request):
    app = AppVersion.objects.first()
    filename = 'app-%s.apk' % (app.version,)
    file_path = os.path.join(settings.MEDIA_ROOT, filename)
    if os.path.exists(file_path):
        with open(file_path, 'rb') as fh:
            response = HttpResponse(
                fh.read(), content_type="application/vnd.android.package-archive")
            response['Content-Disposition'] = 'inline; filename=' + \
                os.path.basename(file_path)
            return response
    raise Http404


def has_update(request):
    version = request.GET.get('version', '1')
    last = AppVersion.objects.first()
    return JsonResponse({'status': 'success', 'message': str(last.version) != version})