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python - Django表单返回空白到下一个模板

问题描述

我的表单似乎永远不会将输入从一个模板返回到另一个模板，我很难理解为什么。

表格.py：

class textForm(forms.Form):
    message = forms.CharField(widget=forms.Textarea)

视图.py：

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

# The nbar statement is used to show which one is active


def index(Request):
    return render (Request, 'index/home.html')

def article(Request):
    if Request.method == 'POST':
        form = textForm(Request.POST)
        if form.is_valid():
            message = form.cleaned_data['message']
            form = textForm()
            context = {'message': message, 'form': form}
            #if request is valid and post, send info to next template
            return render(Request, 'index/article.html', context)
    else:
        form = textForm()
    #else return to the template where user fills out input
    return render(Request, 'index/translate.html', {'form': form})


def translate(Request):
    return render (Request, 'index/translate.html', {'nbar': 'translate'})

def most_popular(Request):
    return render (Request, 'index/most_popular.html', {'nbar': 'most_popular'})

def the_news(Request):
    return render (Request, 'index/news.html', {'nbar': 'news'})

def sports(Request):
    return render (Request, 'index/sports.html', {'nbar': 'sports'})

def science(Request):
    return render (Request, 'index/science.html', {'nbar': 'science'})

def politics(Request):
    return render (Request, 'index/politics.html', {'nbar': 'politics'})

def funny(Request):
    return render (Request, 'index/funny.html', {'nbar': 'funny'})

index/translate.html 表单所在的位置，用户输入文本的位置：

{% extends "index/header.html" %}
{% block content %}
<div class="container">
   <h5 style="padding-top: 20px; padding-bottom: 40px;"><strong>welcome!</strong></h5>

   <form action="/article" method="post">
       {% csrf_token %}
       {{ form  }}
       <input type="submit" value="Submit" />
   </form>

</div>
{% endblock %}

index/article.html 我想从表单中返回值：

{% extends "index/header.html" %}
{% block content %}

<!-- the first div functionality will be created later -->
<div>
    <h2 style="font-size:45px; margin-top: 35px; margin-bottom: -15px;"> article title </h2>
</div>

<div class="card border border-dark" style = "padding-left: 0px;">
    <div class="card-body" style="margin-top: -10px; margin-bottom: -10px; margin-left: -10px;">
        <p class="card-title"><strong> result:</strong> </p>
        <p class="card-text">  {{ message }} </p>
    </div>
</div>
{% endblock %}

我得到的结果是第二个 HTML 文件中的 {{message}} 始终为空白 - 它不返回任何内容

标签： pythondjangoforms

解决方案

您的模板中有错误。它应该是：

<form action="/article" method="post">
    {% csrf_token %}
    {{ form }}
    <input type="submit" value="Submit" />
</form>

并像这样编辑您的视图：

def article(request):
    if request.method == 'POST':
        form = TextForm(request.POST)
        if form.is_valid():
            message = form.cleaned_data['message']
            form = TextForm()
            context = {'message': message, 'form': form}
            return render(request, 'index/article.html', context)
    else:
        form = TextForm()
    return render(request, 'index/article.html', {'form': form})

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