如何在自定义模板标签上使用模板过滤器? [英] How to use a template filter on a custom template tag?
问题描述
我有一个关于模板标签的django问题。我有一个名为 modal_form
的模板标签,带有4个参数。此模板标记可与以下基本变量完美配合:
I have a django problem concerning template tags. I have a template tag named modal_form
with 4 arguments. This template tag works perfectly with basic variables like:
{% modal_form "clients" contact_form "Contacts" "contact" %}
但是当我尝试过滤自定义模板标记中的变量时,它不起作用:
But it doesn't work when i try to filter a variable inside my custom template tag like:
{% modal_form "parameters" form_dict|key:parameter parameter name_dict|key:parameter %}
此自定义过滤器也可以在标记外部完美运行(此过滤器在特定键处获取字典的值)。
我有此错误:
This custom filter works also perfectly outside the tag (this filter get the value of a dict at a specific key). I have this error:
在渲染时捕获VariableDoesNotExist:对键
的查找失败[form_dict | key:parameter ]
Caught VariableDoesNotExist while rendering: Failed lookup for key [form_dict|key:parameter]
也许我必须以其他方式编写标签以支持内部过滤器?
Maybe i have to write the tag in a different way to support filter inside ?
这是我的代码代码:
def modal_form(app, object_form, object_name, object_verbose_name):
return { 'app': app, 'object_form': object_form, 'object_name': object_name, 'object_verbose_name': object_verbose_name }
register.inclusion_tag('tags/modal_form.html')(modal_form)
我的过滤器代码:
def key(d, key_name):
try:
value = d[key_name]
except KeyError:
#from django.conf import settings
#value = settings.TEMPLATE_STRING_IF_INVALID
value = 0
return value
key = register.filter('key', key)
您有什么想法吗?您是否需要更多代码?
Do you have any ideas ? Do you want more code ?
预先感谢您的回答。
推荐答案
如果您的标记和过滤器可以分别正常工作,请尝试使用 with语句 :
If your tag and filter works fine separately, try to use with statement:
{% with var_one=form_dict|key:parameter var_two=name_dict|key:parameter %}
{% modal_form "parameters" var_one parameter var_two %}
{% endwith %}
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