I don't know if you have other problems, but the following is invalid python:
val = token.split_contents()1
You may have meant:
val = token.split_contents()[1]
Which gets you the second element of the list returned by split_contents().
If you wanted the first element, change the 1 to a 0.
Bill
On Fri, Jun 4, 2010 at 12:42 PM, __alex__ <coopk...@gmail.com> wrote:
> Hi all,
>
> I've been trying to figure this out for hours and hours, but I simply
> can't understand how to make it work.
>
> Now, we have a very simple custom template tag. Let's say that we want
> the template tag to take as a parameter a filtered variable. A very
> simple implementation of my template tag is :
>
> register = template.Library()
>
> class Test(template.Node):
> def __init__(self,val):
> self.val = val
> def render(self,context):
> print("VALUE=%s" % self.val)
> if self.val.__class__.__name__ == "FilterExpression":
> self.val = self.val.resolve(context)
> return self.val
>
> @register.tag('test')
> def test(parser,token):
>
> print("Test is executed")
>
> val = token.split_contents()1
> val = parser.compile_filter(val)
>
> return Test(val)
>
> This just gets the value and resolves the filter. A simple template to
> test this is :
>
> {% for p in test_list %}
> {% test p|first %} - {%test p|last%} --- {{p}}<br/>
> {% endfor %}
>
> The test_list is :
> (("First1","Last1"),("First2","Last2"),("First3","Last3"))
>
> So from the code I've written so far I would expect this silly
> template tag to iterate through and print out the first and last
> element of the tuples.
>
> Though, this is the output of the template :
>
> First1 - Last1 --- ('First1', 'Last1')
> First1 - Last1 --- ('First2', 'Last2')
> First1 - Last1 --- ('First3', 'Last3')
>
> And this is what I get in my console:
>
> Test is executed
> Test is executed
> VALUE=p|first
> VALUE=p|last
> VALUE=First1
> VALUE=Last1
> VALUE=First1
> VALUE=Last1
>
> OK, so what I understand so far is that the template player calls the
> test template tag the first two times. Then, somehow it creates new
> Test objects and feeds them with the result of the first execution.
>
> I am certainly not a django expert, so could someone be kind enough to
> explain me what on earth is this thing doing and how to get around it
> please ? :)
>
> --
> You received this message because you are subscribed to the Google Groups
> "Django users" group.
> To post to this group, send email to django-us...@googlegroups.com.
> To unsubscribe from this group, send email to
> django-users+unsubscr...@googlegroups.com.
> For more options, visit this group at
> http://groups.google.com/group/django-users?hl=en.
>
>
--
You received this message because you are subscribed to the Google Groups
"Django users" group.
To post to this group, send email to django-us...@googlegroups.com.
To unsubscribe from this group, send email to
django-users+unsubscr...@googlegroups.com.
For more options, visit this group at
http://groups.google.com/group/django-users?hl=en.
