如何在Django中替换没有选择字符串的用户名 [英] how do I replace no username with a string of choice in Django

问题描述

当没有用户的票时，我想要没有用户分配。

I would like to have 'No user assigned' when there is no user to the ticket.

我这样做到了我的模型，但我没有看到任何更改。

I did this to my model but I don't see any changes

def __unicode__(self):
        print 'gets here****'
        if not self.assigned:
            return 'No user assigned'
        else:
            return self.assigned

分配的是分配给机票的用户。

where assigned is the user assigned for a ticket.

有什么其他的方法吗？

IS ther any other way to do this?

我有我的模板和视图：

{% for ticket in tickets %}
                <tr>
                    <td>{{ ticket.title }}</td>
                    <td>
                    {% for user in ticket.assigned.all %}
                        {{ user.email }}{% if not forloop.last %},{% endif %}
                    {% endfor %}
                    </td>

和我的查看：

def get_data(self, **kwargs):
        context = super(View, self).get_data(**kwargs)
        project = self.project_described()

        context.update({
            "project": project,
            "tickets": project.tickets.all()
        })
        return context

推荐答案

您可以使用 for ... empty

You can use for...empty

将它包含在一个模型中没有什么意义，所以如果在for循环中迭代的东西是空的，那么你可以提供一个默认值

It doesn't make much sense to include it in a model so you can just provide a default if the thing being iterated over in the for loop is empty

{% for user in ticket.assigned.all %}
     {{ user.email }}{% if not forloop.last %},{% endif %}
{% empty %}
  No user assigned 
{% endfor %}

这里的优点是你c总是可以使用空的部分在表格中插入一个按钮，以允许人们被分配（例如）。

The advantage here is you could always use the empty section to insert a button into your table to allow people to be assigned (for example).

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