Django页面不能保存

时间:2013-03-04 04:07:39

标签: django

我正在开发一个类似维基百科的简单应用程序,使用showmedo中的“在20分钟内创建一个wiki”教程。

该应用程序通过您创建一个页面,例如狗,如果它不存在然后您添加有关狗的所有信息,它显示狗和狗的详细信息。enter image description here

当我尝试编辑同一页面时。页面未在主页面上更新,或者在我的管理页面上更新。 enter image description here

我认为问题在于我的save_page函数和edit_page函数。 所以当我创建一个页面时,它是有效的 但是当我尝试检索页面并保存它时。它没有保存。

唯一有效的方法是通过管理员编辑页面。

我认为问题出在这里

def save_page(request, page_name):
    content = request.POST.get('content', 'this is the default')
    try:
        page = Page.objects.get(pk=page_name)
        page.content = content

这是网站 http://tafe.pythonanywhere.com/wikicamp/Dogs/

我的views.py

from wiki.models import Page
from django.shortcuts import render_to_response 
from django.http import HttpResponseRedirect
from django.template import RequestContext
def view_page(request,page_name):
    try:
        page = Page.objects.get(pk=page_name)
    except Page.DoesNotExist:
        return render_to_response("create.html",{"page_name":page_name})
    content = page.content
    return render_to_response("view.html",{"page_name":page_name , "content":content}, context_instance=RequestContext(request))
def edit_page(request,page_name):
    try:
        page = Page.objects.get(pk=page_name)
        content = page.content
    except Page.DoesNotExist:
        content = ""
    return render_to_response("edit.html",{"page_name":page_name, "content":content}, context_instance=RequestContext(request))
def save_page(request, page_name):
     content = request.POST.get('content', 'this is the default')
     try:
         page = Page.objects.get(pk=page_name)
         page.content = content
     except Page.DoesNotExist:
         page = Page(name=page_name, content=content)
         page.save()
    return HttpResponseRedirect("/wikicamp/" + page_name + "/")

我的create.html

 <html>
    <head>
        <title>{{page.name}} - Create </title>
    </head>
    <body>
        <h1>{{page_name}} </h1>
        This page does not exist. <a href="{% url wiki:edit page_name %}">Create?     </a>
 </body>
 </html>

我的edit.html

     <html>
    <head>
        <title>{{page_name - Editing</title>
    </head>
    <body>
        <h1>Editing {{page_name}} </h1>
        <form method = "post" action="{% url wiki:save page_name %}"> {% csrf_token %}
                <textarea name="content" rows="20" cols="60">     {{content}}
      </textarea><br/>      
            <input type="submit" value="Save Page"/>
            </form>
        </body>
      </html>

我的view.html

<html>
    <head>
    <title>{{page_name}}</title>
        </head>
    <body>
        <h1>{{page_name}} </h1>
        {{content}}
        <hr/>
        <a href="{% url wiki:edit page_name %}">Edit this page ?</a>
    </body>
</html>

4 个答案:

答案 0 :(得分:1)

您不是在save_page中保存页面,只有当它不存在时才会保存。尝试类似:

def save_page(request, page_name):
     content = request.POST.get('content', 'this is the default')
     try:
         page = Page.objects.get(pk=page_name)
         page.content = content
         page.save()
     except Page.DoesNotExist:
         page = Page(name=page_name, content=content)
         page.save()
    return HttpResponseRedirect("/wikicamp/" + page_name + "/")

这是一个快速丑陋的修复,我建议您查看formsclass based views

答案 1 :(得分:1)

 try:
     page = Page.objects.get(pk=page_name)
     page.content = content
 except Page.DoesNotExist:
     page = Page(name=page_name, content=content)
     page.save()

我在这里看到两个问题。首先,当您应该搜索page_name属性时,尝试以name作为主键检索页面,其次,在您成功获取页面并更新其内容后,忘了保存它。

由于这是一种常见的模式,django get_or_create中有一个快捷方式,它的工作原理如下:

 page, created = Page.objects.get_or_create(name=page_name)
 if created:
    # new page was created
 else:
    # existing page was retrieved

在您的方案中,您只想获取并更新任一方案中的内容。所以我们不需要使用created变量:

 page, created = Page.objects.get_or_create(name=page_name)
 page.content = content
 page.save()

答案 2 :(得分:1)

我注意到的两件事:

 try:
     page = Page.objects.get(pk=page_name)
     page.content = content
 except Page.DoesNotExist:
     page = Page(name=page_name, content=content)
     page.save()

1)您要try阻止pk阻止exceptnametry正在设置 try: page = Page.objects.get(name=page_name) except Page.DoesNotExist: page = Page(name=page_name) page.content = content page.save()

2)您没有保存在{{1}}区块中。

试试这个:

{{1}}

答案 3 :(得分:1)

你忘了把save()

def save_page(request, page_name):
    content = request.POST.get('content', 'this is the default')
    try:
       page = Page.objects.get(pk=page_name)
       page.content = content
       page.save()
    except Page.DoesNotExist:
       page = Page(name=page_name, content=content)
       page.save()
    return HttpResponseRedirect("/wikicamp/" + page_name + "/")