传递“警报”的404错误从python到html页面的句子，但传递一个词没有错误 [英] 404 error passing a "Alert" sentence from python to html page, but no error for passing just a word

问题描述

更新：我得到的错误消息是404 Resource not found。

Update: The error message I get with the sentence is 404 Resource not found.

"GET /unexpected/The%20Notebook%20name%20is%20taken%20already HTTP/1.1" 404 -

当发生错误时，URL看起来像这样。

The URL looks like this when that error occurs.

http://localhost:8088/unexpected/The%20Notebook%20name%20is%20taken%20already

我试图在我的
应用程序中为用户错误创建一种Alert系统。在我看来，单词之间的空间是问题。但是必须有一个简单，优雅的方式来做到这一点。

I am attempting very poorly to create a sort of "Alert" system for user errors in my application. It appears to me that spaces between words are the problem. But there must be a simple, elegant way to do this.

在下面两行中，最上面一行有效，但不是最下面一行。 b
$ b

Of the two lines below, the top one works, but not the bottom one.

return webapp2.redirect("/unexpected/%s" % 'Hello')
# return webapp2.redirect("/unexpected/%s" % 'The Notebook name is taken already')

相应的定义如下。在这里，我希望评论的
out行可以工作，但也不会。

The corresponding definition is as follows. Here I would have preferred that the commented out line would work, but it will not, either.

class Unexpected(BaseHandler):

    def get(self, reason):
        template_values = {'reason':reason}
        path = os.path.join(TEMPLATE_DIR, 'unexpected.html')
        self.response.out.write(template.render(path, template_values))
        # return webapp2.redirect('/unexpected/%s/ % reason')

app = webapp2.WSGIApplication([
        ('/', MainPage), 
        ('/unexpected/([\w]+)', Unexpected)])

我如何获得发送到 unexpected.html 页面的消息？

How can I get a message sent to the unexpected.html page? I have done this before with javascript Alerts, but am trying NOT to use javascript here.

{% extends "base.html" %}
{% block content %}

This unexpected result occurred: {{ reason }}
<br >
Click the back button and edit your entry.

{% endblock content %}

推荐答案

我的问题是，我试图在 def get（>中没有数据存储模型来将信息传输到 def get（。我定义了一个 def get（，它使用一个名为 Trans 的数据存储模型来存储这样的事务包含在我的句子中的变量名为 reason 。

My problem is that I am trying to do this in def get( without a datastore model to transfer information to the def get(. I have defined a def get( that uses a datastore model named Trans that stores such transactional information that is contained in my sentence in a variable named reason.

class Trans(db.Model):
    reason = db.StringProperty()

我的模型命名为 Unexpected 如下所示。

My model named Unexpected looks like the following.

class Unexpected(BaseHandler):

    def get(self):
    trans=Trans.get_by_key_name('reason')
    template_values = {'trans':trans}
        path = os.path.join(TEMPLATE_DIR, 'unexpected.html')
        self.response.out.write(template.render(path, template_values))

我的python代码如下。

And my python codes is as follows.

reason='That Notebook name is taken already.'
    trans = Trans(key_name='reason')
    trans.reason=reason
    trans.put()
    template_values = {'trans':trans}
    path = os.path.join(TEMPLATE_DIR, 'unexpected.html')
    self.response.out.write(template.render(path, template_values))

我的 unexpected.html 代码如下。

{% extends "base.html" %}
{% block content %}
This unexpected result occurred: <emph style="font-weight: bold">{{ trans.reason }}</emph>
<br /><br />
<label>Click the "Ok" button and to go back to the previous page so you can edit your entry .
</label>
<form action="" method="post">
<input type="hidden" name="reason" value=""></input><br />
  <input type="submit" value="Ok"/>
</form>
{% endblock content %}

这篇关于传递“警报”的404错误从python到html页面的句子，但传递一个词没有错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！