A QR code generator in Django

from django.shortcuts import render
from django.core.validators import URLValidator
from django.core.exceptions import ValidationError
import qrcode
from PIL import Image
import base64
from io import BytesIO

def home(request):
    """The view function handling QR code generation."""

    url = request.GET.get('url')
    if not url:
        # The user hasn't entered a URL yet: render an empty form.
        return render(request, 'make_qr/make_qr.html', {})

    c = {'url': url}

    # Validate the URL to make sure it's well-formed. NB this means it
    # must include the protocol identifier prefix, e.g. 'https://', etc.
    val = URLValidator()
    try:
        val(url)
    except ValidationError:
        # Not a valid URL: render the page with an error message.
        c['status'] = 1
        return render(request, 'make_qr/make_qr.html', c)

    # Make the QR code image
    qr_img = qrcode.make(url)

    # Now convert the image into a base 64 encoded string so it can
    # be rendered directly in the HTML page without us having to save
    # an intermediate PNG file.
    output = BytesIO()
    qr_img.save(output, format='PNG')
    output.seek(0)
    output_s = output.read()
    b64 = base64.b64encode(output_s)
    # We have to decode to remove the b prefix and quotes.
    c['qr_b64'] = b64.decode()

    return render(request, 'make_qr/make_qr.html', c)