UpdateView

Part of the Class-Based Views section of Coddy's Django journey. Lesson 12 of 18.

Posters need to fix their jobs. Editing a row is creating one, except the form starts filled in and saving changes the row instead of adding one. UpdateView does both. A recipe site:

class RecipeUpdateView(UpdateView):
    model = Recipe
    fields = ["title", "cuisine", "minutes"]


# urls.py
path("recipes/<int:pk>/change/", views.RecipeUpdateView.as_view(), name="change")

It finds the row the way DetailView does, by the pk or slug in the URL, and answers 404 when there is none. After saving it goes where CreateView goes: success_url, or the row's get_absolute_url().

It shares recipes/recipe_form.html with CreateView and adds the row as object, so {% if object %} is true only when editing. fields is required: Django will not guess which fields a visitor may change.

Challenge

Easy

Job pages now have an Edit link. Make the page behind it:

A JobUpdateView, an UpdateView of Job with the same five fields as JobCreateView.
A route "jobs/<slug:slug>/edit/" named edit.

Press Run, open a job, press Edit and save: you land back on the job with your change.

Try it yourself

from django.views.generic import CreateView, DetailView, ListView, TemplateView

from .models import Job


class HomeView(TemplateView):
    template_name = "jobs/home.html"

    def get_context_data(self, **kwargs):
        context = super().get_context_data(**kwargs)
        context["count"] = Job.objects.count()
        context["latest"] = Job.objects.order_by("-posted").first()
        return context


class AboutView(TemplateView):
    template_name = "jobs/about.html"


class JobListView(ListView):
    model = Job
    context_object_name = "jobs"
    ordering = ["-posted"]
    paginate_by = 5

    def get_queryset(self):
        jobs = super().get_queryset()
        city = self.request.GET.get("city")
        if city:
            jobs = jobs.filter(city=city)
        return jobs


class JobDetailView(DetailView):
    model = Job


class JobCreateView(CreateView):
    model = Job
    fields = ["title", "company", "city", "salary", "description"]