def post_save_urlqrcode(sender, instance, **kwargs):
"""
根据模型创建QRCode
"""
#logger.info(u"%spost_save signal arrived..." % (instance))
if instance._QRCODE:
instance._QRCODE = False
if instance.qr_image:
instance.qr_image.delete()
qr = qrcode.QRCode(4, qrcode.ERROR_CORRECT_L)
qr.add_data(instance.url)
#print 'data added..'
qr.make()
#print 'image made..'
image = qr.make_image()
#print 'image madelll'
#Save image to string buffer
image_buffer = StringIO()
image.save(image_buffer)
image_buffer.seek(0)
#Here we use django file storage system to save the image.
file_name = 'UrlQR_%s.jpg' % instance.id
file_object = File(image_buffer, file_name)
content_file = ContentFile(file_object.read())
instance.qr_image.save(file_name, content_file, save=True)
def test_fit(self):
qr = qrcode.QRCode()
qr.add_data('a')
qr.make()
self.assertEqual(qr.version, 1)
qr.add_data('bcdefghijklmno')
qr.make()
self.assertEqual(qr.version, 2)
def test_render_svg(self):
qr = qrcode.QRCode()
qr.add_data(UNICODE_TEXT)
qr.make_image(image_factory=svg.SvgImage)
def test_mode_8bit(self):
qr = qrcode.QRCode()
qr.add_data(u'abcABC' + UNICODE_TEXT)
qr.make()
self.assertEqual(qr.version, 1)
self.assertEqual(qr.data_list[0].mode, MODE_8BIT_BYTE)
def test_mode_alpha(self):
qr = qrcode.QRCode()
qr.add_data('ABCDEFGHIJ1234567890')
qr.make()
self.assertEqual(qr.version, 1)
self.assertEqual(qr.data_list[0].mode, MODE_ALPHA_NUM)
def test_mode_number(self):
qr = qrcode.QRCode()
qr.add_data('1234567890123456789012345678901234')
qr.make()
self.assertEqual(qr.version, 1)
self.assertEqual(qr.data_list[0].mode, MODE_NUMBER)
def test_overflow(self):
qr = qrcode.QRCode(version=1)
qr.add_data('abcdefghijklmno')
self.assertRaises(DataOverflowError, qr.make, fit=False)
def test_basic(self):
qr = qrcode.QRCode(version=1)
qr.add_data('a')
qr.make(fit=False)