Question

如何使用变量代替字符串进行表单操作？我尝试过以下操作并遇到错误。

URLS

url(r'^newrole', ModelCreateView.as_view(model = Role, model_url = 'role-new', page_name = 'Role'), name='role-new'),
url(r'^newmember', ModelCreateView.as_view(model = Member, model_url = 'member-new', page_name = 'Member'), name='member-new'),

查看

class ModelCreateView(CreateView):

model_url = None
page_name = None
template_name = 'create_model.html'

def get_success_url(self):
    return reverse(model_url)

def get_context_data(self,**kwargs):
    context = super(ModelCreateView, self).get_context_data(**kwargs)
    context['page_name'] = self.page_name
    return context

这两个都分别报告了以下错误

 <form action="{% url {{model_url}} %}" method="POST">
 <form action="{% url model_url %}" method="POST">

错误

Could not parse the remainder: '{{model_url}}' from '{{model_url}}'. The syntax of 'url'changed in Django 1.5, see the docs.

'url' requires a non-empty first argument. The syntax changed in Django 1.5, see the docs

有没有办法在不使用html文件中的一系列if语句的情况下执行此操作？

Answer 1

是的，您可以使用reverse。您可以在文档here中详细了解它。

from django.core.urlresolvers import reverse

def get_context_data(self,**kwargs):
    context = super(ModelCreateView, self).get_context_data(**kwargs)
    context['page_name'] = self.page_name
    context['model_url'] = reverse("name of the url goes here")
    return context

然后在您的模板中，您不使用网址模板标记。你只需使用变量。

<form action="{{ model_url }}" method="POST">

Answer 2

这是对的：

<form action="{% url model_url %}" method="POST">

您只是不将model_url变量传递到模板上下文中，您需要添加一行：

def get_context_data(self,**kwargs):
    context = super(ModelCreateView, self).get_context_data(**kwargs)
    context['page_name'] = self.page_name
    context['model_url'] = self.model_url # this line added
    return context

在表单操作标记html文件中使用变量作为url

2 个答案: