Calling django template tags from a normal function

Question

How to call django template tags from a normal function?

For instance:

Django template tag:

@register.filter(name='CallingTemplateTagFunction')
def CallingTemplateTagFunction(price):    
    return price*10/100

I wanna to call GetValue function in a normal function.

For instance:

Normal python function:

def Test(request):
    CallingTemplateTagFunction(50) # How to call django template tag function?

Answer 1

You can write somewhere your function:

def my_useful_function(price):
    return price * 10 / 100

And then use it in your views and in template tags:

from somewhere import my_useful_function

# in templatetags:    
@register.filter(name='calling_template_tag_function')
def calling_template_tag_function(price):    
    return my_useful_function(price)

And then in views:

def test(request):
   my_useful_function(50)