def upload_and_convert_image_file(request):
"""
The main view which accepts a file via an 'ImageConverterForm', converts it to a JPEG file and returns it ready for
download as an attachment.
"""
if request.method == 'POST':
form = ImageConverterForm(request.POST, request.FILES)
if form.is_valid():
f = request.FILES['file']
context = {
'file': f,
}
try:
converted_img = convert_image_to_jpeg(f)
name = get_filename_without_extension(f.name)
response = HttpResponse(converted_img.getvalue(),
content_type='image/jpeg')
response['Content-Disposition'] = 'attachment; filename={0}.jpg'.format(name)
return response
except IOError:
return render(request,'unsupported_image_file_error.html',
context)
except Exception as e:
return render(request,'generic_error.html',
context)
else:
form = ImageConverterForm()
return render(request,
'upload.html',
{'form': form})
def test_image_conversion_for_image_file(self):
"""
Tests converting the 'self.image_file_path' to PNG.
"""
# Given
with open(self.image_file_path) as f:
# When
result = convert_image_to_jpeg(f)
img = Image.open(result)
# Then
self.assertEqual(JpegImageFile.format, img.format)
self.assertEqual(self._convert_file(self.image_file_path, JpegImageFile.format).getvalue(),
result.getvalue())
def test_upload_post_with_image_file(self):
"""
Tests POSTing a form which contains a file where the file is an image.
"""
# Given
c = Client()
# When
with open(self.image_file_path) as fp:
response = c.post('/', {'file': fp})
converted_image = convert_image_to_jpeg(fp)
# Then
self.assertEqual(response.status_code, 200)
self.assertEqual(response['Content-Disposition'], 'attachment; filename={0}.jpg'.format(self.image_file_name))
self.assertEqual(response.content, converted_image.getvalue())