- Author:
- SmileyChris
- Posted:
- March 23, 2007
- Language:
- Python
- Version:
- .96
- Score:
- 12 (after 12 ratings)
Add a value to the context (inside of this block) for easy access.
Provides a way to stay DRYer in your templates.
NOTE: This tag is now in Django core, so if you have Django >0.96 (or SVN) then you do NOT need this.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 | # NOTE: This tag is now in Django core, so if you have Django >0.96 (or SVN)
# then you do NOT need this.
from django.template import Library
from django.template import Node, NodeList
from django.template import TemplateSyntaxError
register = Library()
#@register.tag
def do_with(parser, token):
"""
Add a value to the context (inside of this block) for easy access.
Example::
{% with person.addresses.all as addresses %}
{% if addresses %}
<h3>Addresses</h3>
{% for address in addresses %}
...
{% endfor %}
{% endif %}
{% endwith %}
"""
bits = list(token.split_contents())
if len(bits) != 4 or bits[2] != "as":
raise TemplateSyntaxError, "%r expected format is 'value as name'" % tagname
var = parser.compile_filter(bits[1])
name = bits[3]
nodelist = parser.parse(('endwith',))
parser.delete_first_token()
return WithNode(var, name, nodelist)
do_with = register.tag('with', do_with)
class WithNode(Node):
def __init__(self, var, name, nodelist):
self.var = var
self.name = name
self.nodelist = nodelist
def __repr__(self):
return "<WithNode>"
def render(self, context):
val = self.var.resolve(context)
context.push()
context[self.name] = val
output = self.nodelist.render(context)
context.pop()
return output
|
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Comments
This tag is more useful, but if I need set more variables this tag use two lines for variables.
For this, I use the tag "set" (-- {% set base_url "../" %} --) (-- {% set obj object %} --). So, when I need change much variable name for an include tag, this save me the half of lines:
#
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