Django无法处理html表单数据

Question

I have a simple Django site and I want to pass data from the first box, and return that value plus 5 to the second form box on the page. 我有一个简单的Django网站，我想从第一个框传递数据，然后将该值加5返回到页面上的第二个表单框。 I later plan on doing math with that first value but this will get me started. 我后来计划使用第一个值进行数学运算，但这将使我入门。 I am having a lot of trouble retrieving the form data. 我在检索表单数据时遇到很多麻烦。 I know I need to create a function in my views.py file to process the form, and I need to put something in URLs.py to retrieve the form data. 我知道我需要在views.py文件中创建一个函数来处理表单，并且需要在URLs.py放入一些URLs.py以检索表单数据。 I have tried everything in tutorials, etc, but can't figure it out. 我已经尝试了教程等中的所有内容，但无法弄清楚。

My html template is a simple page that has a form with two fields and a submit button. 我的html模板是一个简单的页面，具有一个包含两个字段的表单和一个提交按钮。 Django runserver pulls up the html page just fine. Django runserver拉起html页面就好了。 Here is my code: 这是我的代码：

Views.py Views.py

from django.shortcuts import render
from django.http import HttpResponse
from django.template import loader
from django import forms

def index(request):
    return render(request, 'brew/index.html')

 #Here I want a function that will return my form field name="input", 
 #and return that value plus 5 to the form laveled name="output". 
 #I will later us my model to do math on this, but I cant get 
 #this first part working

urls.py urls.py

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

urlpatterns = [
    url(r'^$', views.index, name='index'),    
]

Here is my html template, index.html: 这是我的html模板index.html：

<html>
<head>
<title>Gravity Calculator</title>
</head>
<body>
<h1>Gravity Calculator</h1>
<p>Enter the gravity below:</p>
<form action="/sendform/" method = "post">
    Enter Input: <br>
    <input type="text" name="input"><br>
    <br>
    Your gravity is: <br>
    <input type="text" name="output" readonly><br>
    <br>
    <input type="submit" name="submit" >        
</form>
</body>
</html>

Answer 1

You will need to populate the result to context variable which the template can access. 您将需要将结果填充到模板可以访问的上下文变量中。

view: 视图：

def index(request):
    ctx = {}
    if request.method == 'POST' and 'input' in request.POST:
        ctx['result'] = int(request.POST.get('input', 0)) + 5
    return render(request, 'brew/index.html', ctx)

then in your template: 然后在您的模板中：

<html>
<head>
<title>Gravity Calculator</title>
</head>
<body>
<h1>Gravity Calculator</h1>
<p>Enter the gravity below:</p>
<form action="/sendform/" method = "post">
    Enter Input: <br>
    <input type="text" name="input"><br>
    <br>
    Your gravity is: <br>
    <input type="text" name="output" value="{{ result }}" readonly><br>
    <br>
    <input type="submit" name="submit" >        
</form>
</body>
</html>

Looks like you are quite new at Django, I recommend: 看来您是Django的新手，我建议：

use method based views, until you are comfortable with it, then 使用基于方法的视图，直到您满意为止，然后
start using class based views, advantage being code reusability, but ultimately class based views spits out view methods, a good reference site is ccbv.co.uk 开始使用基于类的视图，其优势是代码可重用性，但最终基于类的视图会吐出视图方法，ccbv.co.uk是一个很好的参考站点
using form class 使用表单类

Django无法处理html表单数据

问题描述

1 个解决方案

解决方案1
1 已采纳 2016-03-01 22:43:40

Django无法处理html表单数据

问题描述

1 个解决方案

解决方案1 1 已采纳 2016-03-01 22:43:40

解决方案1
1 已采纳 2016-03-01 22:43:40