Django. Загрузка файлов на сервер

from django.db import models
from django.conf import settings
from django.utils.html import format_html
 
 
class PersonModel(models.Model):
    first_name = models.CharField(max_length=25)
    last_name = models.CharField(max_length=25)
    date_of_birth = models.DateField()
 
    def file_location(self):
        return format_html('<a href="{}">{}</a>'.format(
            settings.MEDIA_URL+'{}-{}-{}.txt'.format(self.first_name, self.last_name, self.date_of_birth),
            'link')
        )

from django import forms
from .models import PersonModel
 
 
class PersonForm(forms.ModelForm):
    class Meta:
        model = PersonModel
        fields = '__all__'

from django.contrib import admin
from .models import PersonModel
 
 
@admin.register(PersonModel)
class PersonAdmin(admin.ModelAdmin):
    readonly_fields = ('person_file_location',)
    fields = ('first_name', 'last_name', 'date_of_birth', 'person_file_location')
    list_display = ('first_name', 'last_name', 'date_of_birth', 'file_location')
 
    def person_file_location(self, obj):
        return obj.file_location()

from django.shortcuts import render
from django.conf import settings
from .forms import PersonForm
from .models import PersonModel
 
 
def index(request):
    if request.method == 'POST':
        p = request.POST
        fn = p['first_name']
        ln = p['last_name']
        dob = p['date_of_birth']
 
        file_name = settings.MEDIA_ROOT+'{}-{}-{}.txt'.format(fn, ln, dob)
 
        with open(file_name, 'w') as f_in:
            f_in.write('{}\n{}\n{}'.format(fn, ln, dob))
 
        PersonModel(first_name=fn, last_name=ln, date_of_birth=dob).save()
        context = {'form': PersonForm(request.POST), 'msg': 'data saved'}
    else:
        context = {'form': PersonForm()}
 
    return render(request, 'generate_file/index.html', context)

urlpatterns = [
    url(r'^admin/', admin.site.urls),
] + static(settings.MEDIA_URL, document_root=settings.MEDIA_DIR)

BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
MEDIA_DIR = os.path.join(BASE_DIR, 'media')
...
MEDIA_URL = '/media/'