与'*'相反，参数'（）'和关键字参数'{}'未找到 [英] Reverse for '*' with arguments '()' and keyword arguments '{}' not found

问题描述

使用参数'（）'和$ b反转'products.views.'filter_by_led' $ b关键字参数'{}'未找到。

我能够成功导入 products.views。 filter_by_led 从shell，它的工作，所以路径应该是正确的。

这是urls.py：

 （r'^ led-tv / $'，filter_by_led），
  

这是正在生成错误的地方：

  href ={％url products .views.filter_by_led％}> 
  

我不能理解，因为这个文件可以正常工作：

  {％url products.views.lcd_screen_size screen_size = 50％} 
  

这是函数定义：

  def filter_by_led（request）：
  

我不明白为什么Django会认为该功能将无法找到该功能的Reverse。 / p>

我删除了所有的 *。pyc 文件并重新启动Apache。

我做错了什么？

解决方案

有三件事我可以想到我的头顶：

1. 刚刚使用命名urls ，它更加强大和可维护无论如何



2. 尝试使用 django.core .urlresolvers.reverse 在命令行为a （可能）更好的错误

    >>>来自django.core.urlresolvers import reverse 
   >>>> reverse（'products.views.filter_by_led'）
     




3. 查看是否有超过一个指向该视图的网址

Caught an exception while rendering:

Reverse for 'products.views.'filter_by_led' with arguments '()' and keyword arguments '{}' not found.

I was able to successfully import products.views.filter_by_led from the shell and it worked so the path should be correct.

Here is the urls.py:

(r'^led-tv/$', filter_by_led ),

This is where the error is being generated:

href="{% url products.views.filter_by_led %}">

Which I can't understand because this works fine from the same file:

{% url products.views.lcd_screen_size screen_size=50 %}

Here is the function definition:

def filter_by_led(request):

I don't understand why Django would think that the function would not be able to find the Reverse for that function.

I deleted all the *.pyc files and restarted Apache.

What am I doing wrong?

解决方案

There are 3 things I can think of off the top of my head:

1. Just used named urls, it's more robust and maintainable anyway

2. Try using django.core.urlresolvers.reverse at the command line for a (possibly) better error

   >>> from django.core.urlresolvers import reverse
   >>> reverse('products.views.filter_by_led')
   

3. Check to see if you have more than one url that points to that view

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