MTV：模型、模板与视图
了解 Django 如何划分职责，以及 MTV 如何对应 MVC
MTV：模型、模板与视图 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。
Three Clear Jobs
Django splits an app into three roles so code stays tidy. This pattern is called MTV: Models, Templates, and Views, each with one clear job.
Models Hold Data
A Model describes your data, like a Post or a User. Django turns that Python class into a database table you can query without writing SQL.
class Post(models.Model):
title = models.CharField(max_length=120)
body = models.TextField()Templates Show Data
A Template is an HTML file with placeholders. It decides how data looks on the page, keeping design separate from your Python logic.
<h1>{{ post.title }}</h1>
<p>{{ post.body }}</p>Views Connect Both
A View is the brain: it takes a request, grabs data from models, and hands it to a template to render. It glues the pieces together.
def post_list(request):
posts = Post.objects.all()
return render(request, "list.html", {"posts": posts})The Flow in One Breath
Request comes in, a view fetches model data, then a template renders the result. That round trip is the heartbeat of every Django page.
MTV Meets MVC
You may know MVC from elsewhere. MTV is the same idea renamed: Model is Model, Template is the View, and Django's View plays the Controller.
Why the Names Differ
Django calls the page layer a Template because Django itself handles the controlling. The framework is the controller, so the word would just confuse you.
Separation of Concerns
Keeping data, logic, and design apart is called separation of concerns. Change a template's look without touching models, and your code stays calm. 🧩
Where Each Lives
Models sit in models.py, views in views.py, and templates in a templates folder. Knowing where things go is half of working confidently in Django.
URLs Point to Views
One missing link ties it together: a URL pattern maps a web address to the right view, so Django knows which code to run for each page.
urlpatterns = [
path("posts/", post_list),
]Why MTV Helps You
With clear roles, teams work in parallel and bugs are easier to find. You always know where a change belongs, even months later. 🙌
Quick Check
Which layer does the heavy lifting?
Recap
You now see Django's MTV: models hold data, templates show it, and views connect both. It is just MVC renamed, keeping concerns cleanly separate. ✨
常见问题解答
「MTV：模型、模板与视图」课时是免费的吗？
是的 — 「MTV：模型、模板与视图」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。
「MTV：模型、模板与视图」这节课中我会学到什么？
了解 Django 如何划分职责，以及 MTV 如何对应 MVC 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。
「MTV：模型、模板与视图」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。