Question

我想在计算模板后从视图显示数据。视图从Django表单收集数据，然后执行简单的计算。但是，该功能不会重定向到模板。

 views.py

    from . import forms
    from django.http import HttpResponseRedirect
    from django.shortcuts import render,redirect

    def index(request):
        form = forms.InputForm()
        return render(request, 'index.html', {'form': form})


    def addition(a,b):
        c = a + b
        return c


    def input_form_Addition(request):
        if request.method == 'post':
           form = forms.InputForm(request.POST)
           if form.is_valid():
              input1 = form.cleaned_data['input1']
              input2 = form.cleaned_data['input2']
              total = addition(input1,input2)

              return render(request, 'output.html', {'total': total})
        else:
             form = forms.InputForm()

模板（output.html）如下：

    <!DOCTYPE html>
    <html lang="en">
    <head>
       <meta charset="UTF-8">
       <title>Forms</title>

    </head>
    <body>

      <p>The Sum is {{ total }}</p>

    </body>
    </html>

我的网址路由如下：

    from django.urls import path
    from .views import index
    from simple_addition import views

      urlpatterns = [
           path('', views.index, name='index'),
           path('output/', views.input_form_Addition, name='output')
             ]

我的Django表单显示良好，外观如下。

forms.py 从Django导入表格中

    class InputForm(forms.Form):
       input1 = forms.FloatField()
       input2 = forms.FloatField()

并显示在：

    <!DOCTYPE html>
    <html lang="en">
    <head>
      <meta charset="UTF-8">
      <title>Forms</title>

   </head>
   <body>
      <h2>Addition Page</h2>
      <p>Fill in two numbers to get their sum</p>

      <form method="post">
           {% csrf_token %}
           {{ form.as_p }}
      <input type="submit" value="Add" >
      </form>
    </body>
    </html>

Answer 1

您可以输入表格代码吗？（模板和forms.py）

编辑：

好的，我找到了你的问题：

<form method="post">
       {% csrf_token %}
       {{ form.as_p }}
  <input type="submit" value="Add" >

您错过了张贴表格的操作：

表单模板：

<form method="post" action="/output/">
    {% csrf_token %}
    {{ form.as_p }}
    <input type="submit" value="Add" >
</form>

urls.py

path('output/', views.input_form_Addition, name='output')

views.py

from . import forms
from django.http import HttpResponseRedirect
from django.shortcuts import render,redirect

def index(request):
    form = forms.InputForm()
    return render(request, 'index.html', {'form': form})


def addition(a,b):
    c = a + b
    return c


def input_form_Addition(request):
form = forms.InputForm(request.POST)
if form.is_valid():
    input1 = form.cleaned_data['input1']
    input2 = form.cleaned_data['input2']
    total = addition(input1, input2)

    return render(request, 'output.html', {'total': total})

Answer 2

只需替换函数 input_form_Addition（request）：

中的行

if request.method == 'post':

使用

if request.method == 'POST':

将数据从Django视图传递到模板

2 个答案: