为什么我们在 django 中这样写 form = StudentForm(request.POST)？

Question

这是我的观点功能，

def studentcreate(request):
    reg = StudentForm()
    string = "Give Information"

    if request.method == "POST":
        reg = StudentForm(request.POST)
        string = "Not Currect Information"

        if reg.is_valid():
            reg.save()
            return render('http://localhost:8000/accounts/login/')

    context = {
        'form':reg,
        'string': string,
    }

    return render(request, 'student.html', context)

这里我们首先将表格存储在 reg 变量中然后我们也写 reg = StudentForm(request.POST) 为什么？实际上我们为什么要写这个？

Answer 1

我不能告诉你为什么要写这篇文章。也许只有你自己知道。这没有多大意义。我建议阅读 https://docs.djangoproject.com/en/4.0/topics/forms/#the-view

上的 Django 文档

from django.http import HttpResponseRedirect
from django.shortcuts import render

from .forms import NameForm

def get_name(request):
    # if this is a POST request we need to process the form data
    if request.method == 'POST':
        # create a form instance and populate it with data from the request:
        form = NameForm(request.POST)
        # check whether it's valid:
        if form.is_valid():
            # process the data in form.cleaned_data as required
            # ...
            # redirect to a new URL:
            return HttpResponseRedirect('/thanks/')

    # if a GET (or any other method) we'll create a blank form
    else:
        form = NameForm()

    return render(request, 'name.html', {'form': form})

如果请求是 POST，则从数据中读取。否则，return 一个空表格。

Answer 2

您可以将“request.POST”视为传递到视图中的表单的参数。这告诉视图所提到的表单具有来自 name.html 中表单的 POST 数据。否则它只是一个空表格。

为什么我们在 django 中这样写 form = StudentForm(request.POST)？

Why we write this, form = StudentForm(request.POST) in django?

python

django

django-views