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.
我有一个表，我想显示对象如下所示:

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 文档 指出，当它看到 .在变量
它尝试了多种方法来获取数据，其中之一是字典查找，这正是我想要的，但似乎没有发生...

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

我找到了一个更好"/更好"的解决方案来获取内部变量这不是最好的方法，但它有效.

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

您在 django 中安装了一个自定义过滤器，它以您的字典的键作为参数

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

要使其在 google app-engine 中工作，您需要将一个文件添加到您的主目录中，我调用了我的 django_hack.py，其中包含一小段代码

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)

现在我们有了这个文件，我们需要做的就是告诉应用引擎使用它...我们通过将这一小行添加到您的主文件中来做到这一点

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 }}

它应该可以完美运行 =)

And its should work perfectly =)

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