使用参数“()"和关键字参数“{}"未找到的“*"反转 [英] Reverse for '*' with arguments '()' and keyword arguments '{}' not found

问题描述

渲染时发现异常:

<块引用>

'products.views.'filter_by_led' 与参数 '()' 和未找到关键字参数{}".

我能够从 shell 成功导入 products.views.filter_by_led 并且它工作正常，所以路径应该是正确的.

这里是urls.py:

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

这是产生错误的地方:

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

我无法理解，因为这在同一个文件中可以正常工作:

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

这里是函数定义:

def filter_by_led(request):

我不明白为什么 Django 会认为该函数无法找到该函数的 Reverse.

我删除了所有 *.pyc 文件并重新启动了 Apache.

我做错了什么?

解决方案

我能想到 3 件事:

1. 刚刚使用了命名网址，无论如何它更健壮和可维护

2. 尝试在命令行中使用 django.core.urlresolvers.reverse 以获得(可能)更好的错误

   <预><代码>>>>从 django.core.urlresolvers 导入反向>>>反向('products.views.filter_by_led')

3. 检查您是否有多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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