Malformed url of uploaded files; uploaded_to parameter is ignored

[Laisvas]

1)If your model has a FileField - field with upload_to parameter, the parameter is ignored.
2)File.url method on files attached to objects returns MEDIA_URL + full absolute file path, not the url of the uploaded file.

How to reproduce:

1. Fresh Django install, the project name: mysite, the app name: app

#models.py:
from django.db import models

class InputFile(models.Model):
      name = models.CharField(max_length=255)
      upload = models.FileField(upload_to='uploads/%Y/%m/%d/' )

#views.py:

from django.shortcuts import render
from django.http import HttpResponse
from models import InputFile
from django.core.files import File

def index(request):
    tmp_file=open('/home/test/mysite/app/media_files/a.txt')
    django_file = File(tmp_file)
    file_name = django_file.name
    file_size = django_file.size
    saved = InputFile(name='a', upload=django_file)
    saved.save()
    ## Let's check does the file is saved:
    file_pk = saved.pk
    file_url = saved.upload.url
    upload_path = saved.upload.path
    output = 'File name: {0}, file size: {1}, file_pk: {2}, url: {3}, path: {4} '.format(file_name, file_size, file_pk, file_url, upload_path)
    return HttpResponse(output)

# settings.py:

MEDIA_URL = '/media/'
MEDIA_ROOT = "/home/test/mysite/app/media_files/"

# urls.py
from django.conf.urls import url
from django.contrib import admin
from app import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^file/', views.index),

]

3. Put a test file in your MEDIA_ROOT (i.e. '/home/test/app/media_files/a.txt'
4. The output:

File name: /home/test/mysite/app/media_files/a.txt,
file size: 3,
file_pk: 1,
url: /media/home/test/mysite/ap/media_files/a_55k5fIW.txt,
path: /home/test/mysite/file/media_files/a_55k5fIW.txt

5. The file was saved to /home/test/mysite/file/media_files/a_55k5fIW.txt

Expected result

Django v. 1.9.8 returns on the same code:
...
url: /media/uploads/2016/08/11/a.txt,
path: /home/test/mysite/app/media_files/uploads/2016/08/11/a.txt
...
The file was saved to /home/test/mysite/app/media_files/uploads/2016/08/11/a.txt

NB

The same problem is on Django version 1.11.dev20160811204658

[Tim Graham]

You need to use FieldFile when interacting with FileField if you want upload_to to be respected. Please take a look at the ​file topic guide for an example. If you need help, take a look at TicketClosingReasons/UseSupportChannels for ways to get help. Thanks!