blocks|key|270786|text|金字塔文档有一个特别的单点section，其中包含以下示例：|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|270787|from+pyramid.httpexceptions+import+HTTPFound

def+myview(request):
++++return+HTTPFound(location='http://example.com')|code-block|syntax|javascript|270788|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.pylonsproject.org/projects/pyramid/en/latest/narr/views.html#using-a-view-callable-to-do-an-http-redirect^0|D|7|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

The Pyramid documentation has a particularly on-point <a href="http://docs.pylonsproject.org/projects/pyramid/en/latest/narr/views.html#using-a-view-callable-to-do-an-http-redirect" rel="nofollow noreferrer">section</a> with the following example:

<pre><code>from pyramid.httpexceptions import HTTPFound

def myview(request):
 return HTTPFound(location='http://example.com')
</code></pre>

blocks|key|2975151|text|假设您的主页是金字塔web应用程序的默认视图，您可以执行以下操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2975152|def+_get_link_form(post_data):
++++"""+Returns+the+initialised+form+object+"""

++++return+LinkForm(post_data)

def+home_page(request):

++++form+=+_get_link_form(request.POST)
++++return+{'form'+:+form}

def+save_post(request):+++
++++form+=+_get_link_form(request.POST)

++++if+not+form.validate():
++++++++from+pyramid.httpexceptions+import+HTTPFound
++++++++return+HTTPFound(location=request.application_url)|code-block|syntax|javascript|2975153|基本上，您需要知道home_page视图是如何“添加”到配置器的。如果您的主页实际上位于/+like+/level/deep/+homepage，则重定向可能如下所示：|2975154|++++++++return+HTTPFound(location=request.application_url+%2B+'/few/levels/deep/homepage')|2975155|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

Assuming your homepage is the default view of your pyramid web app, you can do:

<pre><code>def _get_link_form(post_data):
 """ Returns the initialised form object """

 return LinkForm(post_data)

def home_page(request):

 form = _get_link_form(request.POST)
 return {'form' : form}

def save_post(request): 
 form = _get_link_form(request.POST)

 if not form.validate():
 from pyramid.httpexceptions import HTTPFound
 return HTTPFound(location=request.application_url)
</code></pre>

Basically you need to know how the home_page view was "added" to your Configurator. If your homepage actually lives at /few/levels/deep/homepage then a redirect might look like this:

<pre><code> return HTTPFound(location=request.application_url + '/few/levels/deep/homepage')
</code></pre>

blocks|key|2975246|text|您的问题最容易解决的方法是:简单地POSTing到显示表单的同一个URL，并在POST成功时简单地将用户从页面重定向离开。这样，在表单成功提交之前，您不能更改URL。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2975247|如果您非常想发布到不同的URL，那么您需要使用会话保存数据，因为您显然是在处理请求之间的表单数据。|2975248|通常，如果您希望能够处理表单中的错误，则可以使用会话和flash消息。要做到这一点，您只需添加一个位置的闪光消息出现在您的基本模板和设置会话支持使用类似pyramid_beaker的东西。|2975249|假设您的主页设置在“home”的命名路由上：|2975250|from+pyramid.httpexceptions+import+HTTPFound

def+myview(request):
++++user+=+'<default+user+field+value>'
++++if+'submit'+in+request.POST:
++++++++user+=+request.POST.get('user')
++++++++#+validate+your+form+data
++++++++if+<form+validates+successfully>:
++++++++++++request.session.flash('Form+was+submitted+successfully.')

++++++++++++url+=+request.route_url('home')+
++++++++++++return+HTTPFound(location=url)
++++return+{
++++++++#+globals+for+rendering+your+form
++++++++'user':+user,
++++}|code-block|syntax|javascript|2975251|请注意，如果表单验证失败，您是如何使用最初呈现表单的相同代码进行验证的，并且只有在成功时才会重定向。这种格式还可以处理用提交中使用的值和默认值填充表单。|2975252|您可以使用request.session.peek_flash()和request.session.pop_flash()遍历您选择的模板中的flash消息。|offset|length|style|CODE|2975253|如果你想标记你的主页视图来检查会话数据，route_url也支持修改生成的url上的查询字符串。|2975254|显然，您可以将查询字符串中的所有内容传递回主页，但这是一个非常大的安全漏洞，会话可以帮助防范。|2975255|entityMap^0|0|0|0|0|0|0|5|S|Y|R|0|K|9|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|11|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|13|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|14|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|16|8|@$Q|17|R|18|S|T]|$Q|19|R|1A|S|T]]|9|@]|A|$]]|$1|U|3|V|5|6|7|1B|8|@$Q|1C|R|1D|S|T]]|9|@]|A|$]]|$1|W|3|X|5|6|7|1E|8|@]|9|@]|A|$]]|$1|Y|3|-4|5|6|7|1F|8|@]|9|@]|A|$]]]|Z|$]]

Your problem is most easily solved by simply POSTing to the same URL that your form is shown at, and simply redirecting the user away from the page when the POST is successful. That way until the form is successfully submitted you do not change URLs.

If you're just dying to POST to a different URL, then you need to save the data using sessions, since you're obviously handling the form data between requests.

Typically if you want to be able to handle errors in your forms you would use a session and flash messages. To do this you simply add a location for flash messages to appear in your base template and setup session support using something like pyramid_beaker.

Assuming your home page is setup at the 'home' named-route:

<pre><code>from pyramid.httpexceptions import HTTPFound

def myview(request):
 user = '&lt;default user field value&gt;'
 if 'submit' in request.POST:
 user = request.POST.get('user')
 # validate your form data
 if &lt;form validates successfully&gt;:
 request.session.flash('Form was submitted successfully.')

 url = request.route_url('home') 
 return HTTPFound(location=url)
 return {
 # globals for rendering your form
 'user': user,
 }
</code></pre>

Notice how if the form fails to validate you use the same code you did to render the form originally, and only if it is successful do you redirect. This format can also handle populating the form with the values used in the submission, and default values.

You can loop through the flash messages in your template of choice using <code>request.session.peek_flash()</code> and <code>request.session.pop_flash()</code>.

<code>route_url</code> supports mutating the query string on the generated url as well, if you want to flag your home page view to check the session data.

You can obviously just pass everything in the query string back to the home page, but that's a pretty big security vulnerability that sessions can help protect against.

blocks|key|270871|text|我是这样做的：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|270872|from+pyramid.httpexceptions+import+HTTPCreated

response+=+HTTPCreated()
response.location+=+self.request.resource_url(+newResource+)
return+response|code-block|syntax|javascript|270873|这将发送HTTP创建的代码，201|270874|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

I do this like so:

<pre><code>from pyramid.httpexceptions import HTTPCreated

response = HTTPCreated()
response.location = self.request.resource_url( newResource )
return response
</code></pre>

This sends the HTTP Created code , 201

blocks|key|2975270|text|一个干净的方法是使用金字塔为不同的请求类型提供的“重载”，例如，你可以这样装饰你的方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2975271|@action(request_method='GET',
++++++++renderer='mypackage:/templates/save.mako',
++++++++name='save')
def+save(request):
++++'''+Fill+the+template+with+default+values+or+leave+it+blank'''
+++++return+{}


@action(request_method='POST',
++++++++renderer='mypackage:/templates/save.mako',
++++++++name='save')
def+save_post(request):
++++"""+form+data+is+submitted+here+""""
++++#+process+form|code-block|syntax|javascript|2975272|在HTML中，您必须调用操作表单，如|2975273|<form+method="POST"+id="tform"+action="${request.route_url('home',+action='save')}">|offset|length|style|CODE|2975274|这样，一个方法在使用方法POST时被处理，另一个方法在使用GET时被处理。使用相同的名称，但有两个实现。|BOLD|2975275|entityMap^0|0|0|0|0|2C|0|16|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|U|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|V|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|W|8|@$K|X|L|Y|M|N]]|9|@]|A|$]]|$1|O|3|P|5|6|7|Z|8|@$K|10|L|11|M|Q]]|9|@]|A|$]]|$1|R|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|S|$]]

A clean way is using the "overload" provided by pyramid for different request types, por example, you can decorate your methods this way:

<pre><code>@action(request_method='GET',
 renderer='mypackage:/templates/save.mako',
 name='save')
def save(request):
 ''' Fill the template with default values or leave it blank'''
 return {}


@action(request_method='POST',
 renderer='mypackage:/templates/save.mako',
 name='save')
def save_post(request):
 """ form data is submitted here """"
 # process form
</code></pre>

In the HTML, you must call the action form, like

<code>&lt;form method="POST" id="tform" action="${request.route_url('home', action='save')}"&gt;</code>

This way, one method is processed when the method POST is used, and the other when the GET is used. The same name, but two implementations.

blocks|key|270897|text|金字塔文档包含有关重定向的内容，您可以在下面的链接中看到更多信息：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|270898|Pyramid+documentation|270899|import+pyramid.httpexceptions+as+exc
raise+exc.HTTPFound(request.route_url("section1"))+++#+Redirect|code-block|syntax|javascript|270900|编辑：实际上你可以在客户端使用Javascript来做这件事，首先你应该向客户端发送特定的响应(无论是闪现一些数据还是返回响应对象)：|270901|window.location+=+'{{+request.route_path("route_name")+}}';|270902|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.pylonsproject.org/projects/pyramid_cookbook/en/latest/pylons/exceptions.html^0|9|3|0|0|L|0|0|0|0|3|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@$9|Z|A|10|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|11|8|@]|D|@$9|12|A|13|1|14]]|E|$]]|$1|H|3|I|5|J|7|15|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|O|3|P|5|J|7|19|8|@]|D|@]|E|$K|L]]|$1|Q|3|-4|5|6|7|1A|8|@]|D|@]|E|$]]]|R|$S|$5|T|U|V|E|$W|X]]]]

The Pyramid documentation has content about Redirect, you can see more information in below link :

<a href="http://docs.pylonsproject.org/projects/pyramid_cookbook/en/latest/pylons/exceptions.html" rel="nofollow noreferrer">Pyramid documentation</a>

<pre><code>import pyramid.httpexceptions as exc
raise exc.HTTPFound(request.route_url("section1")) # Redirect
</code></pre>

Edited:
Actually you can do that on client side with Javascript, first you should send particular response to client side(either with flashes some data or return Response object):

<pre><code>window.location = '{{ request.route_path("route_name") }}';
</code></pre>

I'm trying to have my form submit to a route which will validate the data then redirect back to the original route.

For example:

<ul>
<li>User loads the page website.com/post</li>
<li>Form POSTs the data to website.com/post-save</li>
<li>User gets redirected back to website.com/post</li>
</ul>

Pyramid is giving me some troubles doing this.

Here's my slimmed down views.py

<pre><code>def _get_link_form(post_data):
 """ Returns the initialised form object """

 return LinkForm(post_data)

def home_page(request):

 form = _get_link_form(request.POST)
 return {'form' : form}

def save_post(request):
 """ form data is submitted here """"

 form = _get_link_form(request.POST)

 if not form.validate():
 return home_page(request, form)
</code></pre>

This is the code I've been playing around with. Not only does it not work, it also feels messy and hacked up. Surely there's a simpler way to 'redirect after-POST' in Pyramid?

How can I redirect after POST in Pyramid?

路由

我正在尝试将表单提交到一个路由，该路由将验证数据，然后重定向回原始路由。例如：website.com/postForm将数据发布到website.com/post-saveUser后，将重定向回website.com/post，用户将加载该页面金字塔给我带来了一些麻烦。这是我的瘦身views.pydef _get_li...

问在金字塔中发布后如何重定向？
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