在django中添加两个数

我是新来的Django，我需要添加两个数字x和y。

x和y是来自用户的输入。

这里是我的views.py

from django.http import HttpResponseRedirect 
from django.http import HttpResponse 
from django.shortcuts import render 
from .forms import InputForm 

def add(request): 
    if request.method == 'POST':  # If the form has been submitted... 
    form = InputForm(request.POST)  # A form bound to the POST data 
    if form.is_valid():    # All validation rules pass 
     cd = form.cleaned_data  # Process the data in form.cleaned_data 
     input1 = cd['x'] 
     input2 = cd['y'] 
     output = input1 + input2 
     return HttpResponseRedirect(request,'/thanks/')# Redirect to new url 
    else: 
     form = InputForm() # An unbound form 


    return render(request, 'scraper/base.html', {'form': form })  


def thanks(request,output): 
return render(request, 'scraper/base.html', output)

这里是我的forms.py

from django import forms 

class InputForm(forms.Form): 
    x = forms.IntegerField(label='Value of x') 
    y = forms.IntegerField(label='Value of y')

这里是我的urls.py

from django.conf.urls import url 
from . import views 

urlpatterns = [ 
url(r'^$', views.add, name='add'), 
url(r'^/', views.thanks , name='thanks'), 
]

这里是output.html

<html> 
    <head> 
    <title>Thanks</title> 
    </head> 
    <body> 
    <h1>Thanks</h1> 
    <h1> Output = {{output}} </h1> 
    </body> 
    </html>

用户输入x和y值，然后点击添加按钮输出应该显示在一个新的页面，如output.html那么该怎么做？

我知道在views.py中有一些错误，我正在学习Django。请指出并告诉我实施这种方法的正确方法

我挣扎了5个小时。

来源

2015-12-17 Sanjay Ortiz

请问你的urls.py是什么样子？根据错误信息有错误 – fodma1

请分享您的urls.py – utkbansal

尝试：'HttpResponse（'Result：{}'.format（output））''而不是'HttpResponseRedirect（...）' – ahmed

我认为你正在使用的重定向错误，你不能在HttpResponseRedirect发送参数，这里检查的修改，并采取看在documentation更多的解释：

views.py

def add(request): 
    if request.method == 'POST':  # If the form has been submitted... 
    form = InputForm(request.POST)  # A form bound to the POST data 
    if form.is_valid():    # All validation rules pass 
     cd = form.cleaned_data  # Process the data in form.cleaned_data 
     input1 = cd['x'] 
     input2 = cd['y'] 
     output = input1 + input2 
     return HttpResponseRedirect('/thanks/{output}/'.format(output=output)) # Redirect to new url 
    else: 
     form = InputForm() # An unbound form 
    return render(request, 'scraper/base.html', {'form': form })

urls.py

url(r'^thanks/(?P<output>\d+)/$', thanks),

来源

2015-12-17 13:36:03 DhiaTN

再次感谢:) –

您可以使用会话来存储输出，然后在下一个视图中检索它。会话框架允许您以每个站点访问者为基础存储和检索任意数据。

编辑您的views.py如下 -

def add(request): 
    if request.method == 'POST':   
     form = InputForm(request.POST)  
     if form.is_valid():     
      cd = form.cleaned_data  
      input1 = cd['x'] 
      input2 = cd['y'] 
      output = input1 + input2 
      # Save the result in the session 
      request.session['output'] = output 
      return HttpResponseRedirect('/thanks/') 
    else: 
     form = InputForm() 
    return render(request, 'scraper/base.html', {'form': form }) 


def thanks(request): 
    # Get the result from the session 
    output = request.session.pop('output', None) 
    return render(request, 'scraper/output.html', {'output':output})

你urls.py应该是 -

urlpatterns = [ 
    url(r'^$', views.add, name='add'), 
    url(r'^thanks/$', views.thanks , name='thanks'), 
]

来源

2015-12-17 17:30:34 utkbansal

您在'thanks'函数的最后一行有一个缩进错误。 – utkbansal

@SanjayOrtiz尝试复制完全相同的代码。 – utkbansal

更正了它，现在https://dpaste.de/34U2：/ –

在django中添加两个数

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