Upload and manipulate xml and image file in django - django

Question

This code return a TypeError as expected str, bytes or os.PathLike object, not InMemoryUploadedFile
I don't know how to pass user data in the form of file and image to my code.py file for making changes to the original.
views.py
def home(request):
new_image = None
file = None
form = ScanForm()
if request.method == 'POST':
form = ScanForm(request.POST, request.FILES)
if form.is_valid():
image = request.FILES['image']
xml_file = request.FILES['xml_file']
new_image = code.create(image, code.search(
xml_file)[0], code.search(xml_file)[1])
form.save()
return render(request, 'app/home.html', {'form': form, 'new_image': new_image})
else:
form = ScanForm()
return render(request, 'app/home.html', {'form': form, 'new_image': new_image})
printing image and xml_file successfully prints out their names
forms.py
class ScanForm(forms.ModelForm):
class Meta:
model = Scan
fields = '__all__'
models.py
class Scan(models.Model):
image = models.ImageField(upload_to='images')
xml_file = models.FileField(upload_to='files')
processed_at = models.DateTimeField(auto_now_add=True)
description = models.CharField(max_length=500, null=True)
class Meta:
ordering = ['-processed_at']
def __str__(self):
return self.description
Here is the code for manipulation of image according to the data in the xml
code.py
def search(path):
new = []
object_names = []
object_values = []
txt = Path(path).read_text()
txt.strip()
names = et.fromstring(txt).findall('object')
for i in names:
object_names.append(i[0].text)
values = et.fromstring(txt).findall('object/bndbox')
for i in values:
for j in i:
object_values.append(int(j.text))
return object_names, object_values
def create(image, object_names, object_values):
img = cv.imread(image)
on = len(object_names)
ov = len(object_values)
for i in list(range(0, ov, on)):
cv.rectangle(img, (object_values[i], object_values[i+1]),
(object_values[i+2], object_values[i+3]), (0, 0, 255), thickness=5)
return img
This code.py works fine if tested by passing data manually using local folder.
Here is the Traceback:
Traceback image

Answer 1

pathlib.Path() handles file paths, not memory objects. request.FILES are the data attached to the POST request. During your handling of a POST request, you can validate this data and decide to save it to the server disk.
If you would like your image processing to read the file from the server disk, you have to save the new model instance first. You can then access the file's path on disk through the name attribute of the model's ImageField, see Using files in models.
If you want to handle the uploaded data before saving it to disk, you can read it as follows:
txt = request.FILES["xml_file"].read()
See UploadedFile.read()