Django模板和变量属性 [英] Django templates and variable attributes

问题描述

我正在使用Google App Engine和Django模板。

我有一张表，我想显示的对象看起来像：

I'm using Google App Engine and Django templates.
I have a table that I want to display the objects look something like:

Object Result:
    Items = [item1,item2]
    Users = [{name='username',item1=3,item2=4},..]

Django模板是：

The Django template is:

<table>
<tr align="center">
    <th>user</th>
    {% for item in result.items %}
        <th>{{item}}</th>
    {% endfor %}
</tr>

{% for user in result.users %}
    <tr align="center"> 
        <td>{{user.name}}</td>
        {% for item in result.items %}
            <td>{{ user.item }}</td>
        {% endfor %}
    </tr>
{% endfor %}
</table>

现在 Django documention 表示在变量中看到。

它尝试几件事来获取数据，其中一个是字典查找，这正是我想要的，但似乎不会发生...

Now the Django documention states that when it sees a . in variables
It tries several things to get the data, one of which is dictionary lookup which is exactly what I want but doesn't seem to happen...

推荐答案

我发现更好/更好的解决方案，以获取变量
它不是最好的方式，但它的工作。

I found a "nicer"/"better" solution for getting variables inside Its not the nicest way, but it works.

您将安装一个自定义过滤器到django它得到您的dict的关键作为参数

You install a custom filter into django which gets the key of your dict as a parameter

为了使其在谷歌应用程序引擎中工作，您需要在主目录中添加一个文件
我称之为

To make it work in google app-engine you need to add a file to your main directory, I called mine django_hack.py which contains this little piece of code

from google.appengine.ext import webapp

register = webapp.template.create_template_register()

def hash(h,key):
    if key in h:
        return h[key]
    else:
        return None

register.filter(hash)

现在我们有这个文件，我们需要做的就是告诉应用引擎使用它...
我们通过添加你的主文件的这个小线条

Now that we have this file, all we need to do is tell the app-engine to use it... we do that by adding this little line to your main file

webapp.template.register_template_library('django_hack')

并在您的模板视图中添加此模板，而不是通常的代码

and in your template view add this template instead of the usual code

{{ user|hash:item }}

=）

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