A Public Link

Part of the Users and Accounts section of Coddy's Django journey. Lesson 16 of 16.

A shared note needs an address anyone can open, signed in or not, that shows the note and nothing else. The owner's page has Edit and Delete; this page must not.

You have used every piece already. The page must decide three things: who may open it, which notes it may find, and which template it uses.

Test it as three people: the owner, another user, and a visitor who is logged out.

Challenge

Medium

Give shared notes a public page.

In notes/urls.py, add shared/<int:pk>/ named shared for shared_note.
In notes/views.py, write shared_note with @login_not_required. It finds only shared notes; any other note responds with 404.
Render notes/shared_note.html: title, body and owner, no Edit or Delete links.
In note_detail.html, in the shared part, link Share link to notes:shared.

Log out and open /shared/2/: Pancakes shows, and /shared/1/ gives 404.

Try it yourself

from django.contrib.auth import login
from django.contrib.auth.decorators import login_not_required, permission_required
from django.contrib.auth.forms import UserCreationForm
from django.contrib.auth.models import User
from django.core.exceptions import PermissionDenied
from django.shortcuts import get_object_or_404, redirect, render

from .forms import NoteForm
from .models import Note


def note_list(request):
    notes = Note.objects.filter(owner=request.user)
    return render(request, "notes/note_list.html", {"notes": notes})


def note_detail(request, pk):
    note = get_object_or_404(Note, pk=pk, owner=request.user)
    return render(request, "notes/note_detail.html", {"note": note})


def note_create(request):
    if request.method == "POST":
        form = NoteForm(request.POST)
        if form.is_valid():
            note = form.save(commit=False)
            note.owner = request.user
            note.save()
            return redirect("notes:detail", pk=note.pk)
    else:
        form = NoteForm()
    return render(request, "notes/note_form.html", {"form": form})


def note_edit(request, pk):
    note = get_object_or_404(Note, pk=pk, owner=request.user)
    if request.method == "POST":
        form = NoteForm(request.POST, instance=note)
        if form.is_valid():
            form.save()
            return redirect("notes:detail", pk=note.pk)
    else:
        form = NoteForm(instance=note)
    return render(request, "notes/note_form.html", {"form": form, "note": note})


def note_delete(request, pk):
    note = get_object_or_404(Note, pk=pk, owner=request.user)
    if request.method == "POST":
        note.delete()
        return redirect("notes:list")
    return render(request, "notes/note_confirm_delete.html", {"note": note})


@login_not_required
def signup(request):
    if request.method == "POST":
        form = UserCreationForm(request.POST)
        if form.is_valid():
            user = form.save()
            login(request, user)
            return redirect("notes:list")
    else:
        form = UserCreationForm()
    return render(request, "notes/signup.html", {"form": form})


def stats(request):
    if not request.user.is_staff:
        raise PermissionDenied
    context = {"user_count": User.objects.count(), "note_count": Note.objects.count()}
    return render(request, "notes/stats.html", context)


@permission_required("notes.view_note", raise_exception=True)
def all_notes(request):
    notes = Note.objects.select_related("owner")
    return render(request, "notes/all_notes.html", {"notes": notes})


def profile(request):
    note_count = request.user.notes.count()
    return render(request, "notes/profile.html", {"note_count": note_count})