Django/django
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Made use of itertools.cycle for the cycle template tag.

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git-svn-id: http://code.djangoproject.com/svn/django/trunk@6636 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Gary Wilson Jr 2007-11-03 02:04:59 +00:00
parent 5997cb8ad4
commit 2a48fc5007
1 changed files with 4 additions and 5 deletions
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9
django/template/defaulttags.py
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@ -1,5 +1,7 @@
"Default tags used by the template system, available to all templates." "Default tags used by the template system, available to all templates."
from itertools import cycle as itertools_cycle
from django.template import Node, NodeList, Template, Context, Variable from django.template import Node, NodeList, Template, Context, Variable
from django.template import TemplateSyntaxError, VariableDoesNotExist, BLOCK_TAG_START, BLOCK_TAG_END, VARIABLE_TAG_START, VARIABLE_TAG_END, SINGLE_BRACE_START, SINGLE_BRACE_END, COMMENT_TAG_START, COMMENT_TAG_END from django.template import TemplateSyntaxError, VariableDoesNotExist, BLOCK_TAG_START, BLOCK_TAG_END, VARIABLE_TAG_START, VARIABLE_TAG_END, SINGLE_BRACE_START, SINGLE_BRACE_END, COMMENT_TAG_START, COMMENT_TAG_END
from django.template import get_library, Library, InvalidTemplateLibrary from django.template import get_library, Library, InvalidTemplateLibrary
@ -22,14 +24,11 @@ class CommentNode(Node):
class CycleNode(Node): class CycleNode(Node):
def __init__(self, cyclevars, variable_name=None): def __init__(self, cyclevars, variable_name=None):
self.cyclevars = cyclevars self.cycle_iter = itertools_cycle(cyclevars)
self.cyclevars_len = len(cyclevars)
self.counter = -1
self.variable_name = variable_name self.variable_name = variable_name
def render(self, context): def render(self, context):
self.counter += 1 value = self.cycle_iter.next()
value = self.cyclevars[self.counter % self.cyclevars_len]
value = Variable(value).resolve(context) value = Variable(value).resolve(context)
if self.variable_name: if self.variable_name:
context[self.variable_name] = value context[self.variable_name] = value