Split up views into separate modules

todo/views/add_list.py

@@ -0,0 +1,42 @@
+from django.contrib import messages
+from django.contrib.auth.decorators import login_required
+from django.db import IntegrityError
+from django.http import HttpResponse
+from django.shortcuts import redirect, render
+from django.utils.text import slugify
+
+from todo.forms import AddTaskListForm
+from todo.utils import staff_only
+
+
+@staff_only
+@login_required
+def add_list(request) -> HttpResponse:
+    """Allow users to add a new todo list to the group they're in.
+    """
+
+    if request.POST:
+        form = AddTaskListForm(request.user, request.POST)
+        if form.is_valid():
+            try:
+                newlist = form.save(commit=False)
+                newlist.slug = slugify(newlist.name)
+                newlist.save()
+                messages.success(request, "A new list has been added.")
+                return redirect("todo:lists")
+
+            except IntegrityError:
+                messages.warning(
+                    request,
+                    "There was a problem saving the new list. "
+                    "Most likely a list with the same name in the same group already exists.",
+                )
+    else:
+        if request.user.groups.all().count() == 1:
+            form = AddTaskListForm(request.user, initial={"group": request.user.groups.all()[0]})
+        else:
+            form = AddTaskListForm(request.user)
+
+    context = {"form": form}
+
+    return render(request, "todo/add_list.html", context)