python-tdd/src/apps/dashboard/views.py

from django.core.exceptions import ValidationError
from django.shortcuts import redirect, render
from .models import Item, List

def home_page(request):
    return render(request, 'apps/dashboard/home.html')

def new_list(request):
    nulist = List.objects.create()
    item = Item(text=request.POST['item_text'], list=nulist)
    try:
        item.full_clean()
        item.save()
    except ValidationError:
        nulist.delete()
        error = "You can't have an empty list item"
        return render(request, "apps/dashboard/home.html", {"error": error})
    return redirect(f'/apps/dashboard/{nulist.id}/')

def view_list(request, list_id):
    our_list = List.objects.get(id=list_id)
    if request.method == "POST":
        Item.objects.create(text=request.POST['item_text'], list=our_list)
        return redirect(f'/apps/dashboard/{our_list.id}/')
    return render(request, 'apps/dashboard/list.html', {'list': our_list})