django - Many to many - proper usage -

i have models this:

user:     #somefields     apps = models.manytomanyfield(app) 

here, user created during registration. links apps using many many in separate page user selects(multiple) apps, no other fields.

what best way populate apps in django ?

for example, if can create user also, can use modelform .save(commit=false) create user , .save_m2m() link apps. here dont need create user. having user already, need add apps. how ?

newly added details: know how normal "form" , normal web way. want write quality code want know. if there nothing wrong in using normal form fine.

there multiple ways it, example:

class userappform(modelform):   class meta:       model = user       fields = ['apps'] 

and in view, configure routing can:

• get id of user select
• raise error if not find id (instead of creating new one)
• initialize form user

for example:

def user_add_app(request, pk):   user = get_object_or_404(user, pk=pk)    if request.method == "post":     form = userappform(request.post, instance=user)      if form.is_valid():       user = form.save()       return httpresponseredirect(<some redirect>)    else:     form = employeeform(instance=user)    return render(request, "<some html file>", {'form': form})