Post data along with photo to django rest with requests package - django

Question

I wrote an api with django rest and I want to post data and photo with requests package.
When I want to send data like this ->
data = {
'name':'data',
'price':'123',
'category':1 }
everything works correctly and the data is saved in the database, but when I want to send a photo along with the data, I get this error->
Traceback (most recent call last):
File "F:\New folder (6)\PyQt5\app.py", line 58, in <module>
window = MainWindow()
File "F:\New folder (6)\PyQt5\app.py", line 48, in __init__
r = requests.post(url, data=json.dumps(data) , headers=headers)
File "C:\Users\PC\AppData\Local\Programs\Python\Python39\lib\json\__init__.py", line 231, in dumps
return _default_encoder.encode(obj)
File "C:\Users\PC\AppData\Local\Programs\Python\Python39\lib\json\encoder.py", line 199, in encode
chunks = self.iterencode(o, _one_shot=True)
File "C:\Users\PC\AppData\Local\Programs\Python\Python39\lib\json\encoder.py", line 257, in iterencode
return _iterencode(o, 0)
File "C:\Users\PC\AppData\Local\Programs\Python\Python39\lib\json\encoder.py", line 179, in default
raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type BufferedReader is not JSON serializable
this is my django rest:
models.py
class Menu(models.Model):
image = models.ImageField(upload_to="img", blank=True, null=True)
name = models.CharField(max_length=100)
price = models.IntegerField()
category = models.IntegerField()
availability = models.BooleanField(default=False)
serializers.py
class MenuSerializer(serializers.ModelSerializer):
class Meta:
model = Menu
fields = ('id', 'image', 'name', 'price',
'category','availability')
views.py
class MenuViewset(ListCreateAPIView):
queryset = Menu.objects.all()
serializer_class = MenuSerializer
and this is my post request with the requests package that I wrote in PyQt:
class MainWindow(QMainWindow):
def __init__(self, *args, **kwargs):
super(MainWindow, self).__init__()
url = 'http://127.0.0.1:8000/api/upload/'
headers = {'Content-Type': 'multipart/form-data'}
data = {'image':('chat2.png', open('chat2.png','rb'),"multipart/form-data"),
'name':'data',
'price':'123',
'category':1 }
r = requests.post(url, data=json.dumps(data) , headers=headers)
if __name__ == '__main__':
app = QApplication([])
window = MainWindow()
app.exec_()

Answer 1

you are blocking the eventloop on requests.post use QNetworkAccessManager or something (open is also blocking).
You haven't called read() on open
open is intended to use as a context-manager
so if you want to use open do it like this:
with open("chat2.png", "rb") as image_fh:
data = {
"image": ("chat2.png", image_fh.read(), "multipart/form-data"),
"name": "data",
"price": "123",
"category": 1,
}