Django Academy · 课时

CreateView 与 UpdateView

根据模型构建添加和编辑页面

CreateView 与 UpdateView 是 CoddyKit 上的免费 Django Academy 课时。这是第 2 节课，共 4 节。你可以在下方免费阅读本课时的完整内容 — 然后在浏览器中使用内置代码编辑器和全天候 AI 导师进行实践。这是 Django Academy 学习路径的一部分，你的进度在网页和 CoddyKit 应用中同步。 Django Academy 课程共包含 4 节课。

本课时的部分内容尚未翻译，以英文显示。

Pages That Write Data

Showing data is half the job. To add and edit records you reach for CreateView and UpdateView.

Meet CreateView

CreateView builds an add page: it renders a form, validates input, and saves a new record for you.

A Form from Fields

Tell CreateView the fields you want, and it generates a matching form straight from your model.

from django.views.generic import CreateView

class PostCreate(CreateView):
    model = Post
    fields = ["title", "body"]

The Form Template Name

CreateView and UpdateView both look for app/model_form.html, like post_form.html, by default.

Rendering the Form

Inside the template the generated form arrives as form, so you render its fields and a submit button.

<form method="post">{% csrf_token %}
  {{ form.as_p }}
  <button>Save</button>
</form>

Meet UpdateView

UpdateView works just like CreateView, but it loads an existing record first so the form starts pre-filled.

Editing an Existing Record

UpdateView reads a pk from the URL, fetches that object, and saves your changes back to it.

from django.views.generic import UpdateView

class PostUpdate(UpdateView):
    model = Post
    fields = ["title", "body"]

Where to Go After Saving

After a successful save, the view redirects. Set success_url to control exactly where users land next.

from django.urls import reverse_lazy

class PostCreate(CreateView):
    success_url = reverse_lazy("post_list")

Or Let the Model Decide

Skip success_url by giving your model a get_absolute_url; the view will redirect there automatically.

def get_absolute_url(self):
    return reverse("post_detail", args=[self.pk])

Wiring the Edit URLs

Create needs no pk, but update does, so its URL captures one with as_view() like the others.

path("new/", PostCreate.as_view()),
path("<int:pk>/edit/", PostUpdate.as_view()),

Shared Form Power

Because both reuse the same form and template, add and edit pages stay consistent with almost no extra code. 💪

Quick Check

What is the main difference between CreateView and UpdateView?

Recap: Create and Update

You used CreateView to add records and UpdateView to edit them, shared one form template, and steered redirects with success_url. 🎉

常见问题解答

「CreateView 与 UpdateView」课时是免费的吗？

是的 — 「CreateView 与 UpdateView」的完整文本可在网页上免费阅读。要进行交互式练习（内置代码编辑器和全天候 AI 导师）并解锁 Django Academy 课程的其余内容，请升级到 CoddyKit PRO。 Django Academy 课程共包含 4 节课。

「CreateView 与 UpdateView」这节课中我会学到什么？

根据模型构建添加和编辑页面你通过在浏览器中直接运行的动手代码来练习 Django Academy，全天候 AI 导师会在你学习这节课的过程中回答你的问题。

学习 Django Academy 需要有经验吗？

无需任何先前经验。CoddyKit 上的 Django Academy 课程适合初学者到高级学习者，你可以从这里开始或从头开始，按照自己的节奏学习。这是第 2 节课，共 4 节。

「CreateView 与 UpdateView」课时需要多长时间？

大多数 CoddyKit 课程大约需要 5–10 分钟。每节课都很精短且互动，所以你能稳步进步，并在网页和应用中从离开的地方继续。

我能在这节 Django Academy 课中编写并运行代码吗？

能。每节 Django Academy 课都包含内置代码编辑器，你可以在浏览器中直接编写并运行真实代码，并获得即时 AI 反馈 — 无需本地设置。

此课程中的所有课时

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