Hi Karen, thank you for your help :o)
I did it like this:
@register.simple_tag
def create_a_link_to(object):
# {% create_a_link_to object %}
model_name = object.get_model_name()
linktext = object.get_linktext()
url = object.get_absolute_url()
if model_name and linktext and url:
return '<a href="%s" class="%s">%s</a>' % (url,
model_name.lower(),
linktext)
return "(LINK ERROR CAUSED BY SIMPLE TAG NAMED 'create_a_link_to')"
And now it works just fine :o)
And thanks for the other helpfull information.
I will surdently read more about it all.
Have a good day
Michael
On 29 Aug., 04:51, Karen Tracey <kmtra...@gmail.com> wrote:
> On Fri, Aug 28, 2009 at 10:34 PM, MIL <needb...@gmail.com> wrote:
>
> > Hi :o)
>
> > I am attempting to create a simpler way to create my links. and I
> > developed this template tag:
>
> > class LinkNode(Node):
> > def __init__(self, object):
> > self.object = object
>
> > def render(self, context):
> > model_name = self.object.get_model_name()
> > linktext = self.object.get_linktext()
> > url = self.object.get_absolute_url()
> > if model_name and linktext and url:
> > return '<a href="%s" class="%s">%s</a>' % (url,
> > model_name.lower(),
> > linktext)
> > return ''
>
> > @register.tag
> > def create_a_link(parser, token):
> > # {% create_a_link to object %}
> > bits = token.contents.split()
> > if len(bits) != 3:
> > raise TemplateSyntaxError, "create_a_link tag takes exactly
> > three
> > arguments"
> > if bits[1] != 'to':
> > raise TemplateSyntaxError, "second argument to create_a_link
> > tag
> > must be 'to'"
> > return LinkNode(bits[2],)
>
> > But I get this error message:
> > TemplateSyntaxError at /
> > Caught an exception while rendering: 'unicode' object has no attribute
> > 'get_model_name'
>
> > What am I doing wrong????
>
> You did not do the work required to access a template variable passed to
> your tag. Your tag gets a string, the name of the variable in the context,
> not the variable itself. This is covered in the doc here:
>
> http://docs.djangoproject.com/en/dev/howto/custom-template-tags/#pass...
>
>
>
> > Is there a simpler and better way to do this job?
>
> Yes, see:
>
> http://docs.djangoproject.com/en/dev/howto/custom-template-tags/#shor...
>
> From a brief glance it looks to me like what you are writing could easily be
> just a simple tag, which is much easier to write and frees you from having
> to resolve the variables (the step you have missed) and also check the
> required number of arguments, etc.
>
>
>
> > I would also like to develop something that can make it simpler to
> > create tables and lists, but that later on.
>
> Do read through to the end of that page on custom template tags. Inclusion
> tags may be useful for you here.
>
> Karen
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Django users" group.
To post to this group, send email to django-users@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
-~----------~----~----~----~------~----~------~--~---
