Copy file into another folder with django?

问题:

I need to upload profile images into diferent folders in Django. So, I have a folder for each account, and the profile image have to go to the specific folder. How can I do that?

Here is my uploadprofile.html

<form action="{% url 'uploadimage' %}" enctype="multipart/form-data" method="POST">
  {% csrf_token %}
  <input type="file" name="avatar" accept="image/gif, image/jpeg, image/png">
  <button type="submit">Upload</button>
</form>

And here is my view in views.py

def uploadimage(request):
    img = request.FILES['avatar'] #Here I get the file name, THIS WORKS

    #Here is where I create the folder to the specified profile using the user id, THIS WORKS TOO
    if not os.path.exists('static/profile/' + str(request.session['user_id'])):
        os.mkdir('static/profile/' + str(request.session['user_id']))


    #Here is where I create the name of the path to save as a VARCHAR field, THIS WORKS TOO
    avatar = "../../static/profile/" + str(request.session['user_id']) + "/" + str(img)

    #THEN I HAVE TO COPY THE FILE IN img TO THE CREATED FOLDER

    return redirect(request, 'myapp/upload.html')

回答1:

You can pass a callable to upload_to. Basically, what it means is whatever value that callable returns, the image will be uploaded in that path.

Example:

def get_upload_path(instance, filename):
    return "%s/%s" % (instance.user.id, filename)

class MyModel:
    user = ...
    image = models.FileField(upload_to=get_upload_path)

---

There's more information in the docs and an example too, though similar to what I posted above.

回答2:

By looking at Django docs what you get when you do img = request.FILES['avatar'] you get a file descriptor that points to an open file with your image.

Then you should to dump the contents in your actual avatar path, right?

#Here is where I create the name of the path to save as a VARCHAR field, THIS WORKS TOO
avatar = "../../static/profile/" + str(request.session['user_id']) + "/" + str(img)
# # # # # 
with open(avatar, 'wb') as actual_file:
    actual_file.write(img.read())
# # # # #    
return redirect(request, 'myapp/upload.html')

Beware: the code is untested.