Как дать пользователю возможность загрузить файл на сайт?

class Articles(models.Model):
    name=models.CharField("Название статьи",max_length=200)
    text=models.TextField(verbose_name="Текст")
class FILES(models.Model):
    aticleff=models.ForeignKey(Article,on_delete=models.CASCADE)
    namesfile=models.TextField('Имя Файла')
    #sfile= это сам файл

from django.contrib import admin
from django.urls import path
from core import views
app_name='core'
urlpatterns = [
    path('detail/<int:id>', views.detail_page, name='detail_page'),
    path('detail/<int:id>/leave_file/',views.leave_file,name='leave_file'),
    path('articles/', views.HomeListView.as_view(), name='home'),
]

from django.shortcuts import render,redirect, get_object_or_404
from .models import *
from django.views.generic import ListView,DetailView
from django.views.generic.edit import FormMixin
from .forms import *
from django.urls import reverse,reverse_lazy
from django.http import HttpResponseRedirect
class HomeListView(ListView):
    model=Articles
    template_name='index.html'
    context_object_name='list_articles'
def detail_page(request,id):
    get_article = Articles.objects.get(id=id)
    context = {
         'get_article':get_article,
         'form':FileForm,
     }     
    template = 'detail.html'     
    return render(request,template,context)
def leave_file(request,id,*args,**kwargs):
    form = FileForm(request.POST)
    artic = get_object_or_404(Articles, id=id)
    a=Articles.objects.get(id=id)
    if request.method=='POST':
        if form.is_valid():
            file = FILES()
            file.aticleff = artic
            file.namesfile = form.cleaned_data['namesfile']
            file.save()
    return HttpResponseRedirect(reverse('core:detail_page',args=(a.id,)))

from django import forms
from .models import *
class FileForm(forms.ModelForm):
    class Meta:
        model=FILES
        fields=('namesfile',)

class FILES(models.Model):
    aticleff=models.ForeignKey(Article,on_delete=models.CASCADE)
    namesfile=models.TextField('Имя Файла')
    sfile=models.ImageField()

fields=('namesfile','sfile')

sfile=models.ImageField(upload_to='media/files')

def leave_file(request,id,*args,**kwargs):
    form = FileForm(request.POST)
    artic = get_object_or_404(Articles, id=id)
    a=Articles.objects.get(id=id)
    if request.method=='POST':
        if form.is_valid():
            file = FILES()
            file.aticleff = artic
            file.namesfile = form.cleaned_data['namesfile']
            file.sfile= form.cleaned_data['sfile']
            file.save()
        else:
            print('111')

class FileForm(forms.ModelForm):
    class Meta:
        model=FILES
        fields=('namesfile','sfile')

def detail_page(request,id):
    get_article = Articles.objects.get(id=id)
    context = {
         'get_article':get_article,
         'form':CommentForm,
         'form2':FileForm(request.POST, request.FILES),
     }     
    template = 'detail.html'     
    return render(request,template,context)