zaki-yama · October 20, 2014 13:08
diff --git a/custom_template_tags.templatetags.current_time.py b/custom_template_tags.templatetags.current_time.py
 # -*- coding: utf-8 -*-
 import datetime

 from django import template


 register = template.Library()
 # これかデコレータ(@register.tag)によってタグを登録する
 # register.tag('current_time', do_current_time)


 # name を省略すると関数名をそのままタグ名として使用する
 @register.tag(name='current_time')
 def do_current_time(parser, token):
 	try:
 		# split_contents() knows not to split quoted strings.
 		tag_name, format_string = token.split_contents()
 	except ValueError:
 		raise template.TemplateSyntaxError("%r tag requires a single argument" % token.contents.split()[0])
 	if not (format_string[0] == format_string[-1] and format_string[0] in ('"', "'")):
 		raise template.TemplateSyntaxError("%r tag's argument should be in quotes" % tag_name)
 	return CurrentTimeNode(format_string[1:-1])


 class CurrentTimeNode(template.Node):
 	def __init__(self, format_string):
 		self.format_string = format_string
 	def render(self, context):
 		return datetime.datetime.now().strftime(self.format_string)
diff --git a/custom_template_tags.urls.py b/custom_template_tags.urls.py
 from django.conf.urls import patterns, include, url
 from django.views.generic import TemplateView

 urlpatterns = patterns('',
    (r'^', TemplateView.as_view(template_name='custom_template_tags/main_page.html')),
 )
diff --git a/templates.custom_template_tags.main_page.html b/templates.custom_template_tags.main_page.html
 {% load current_time %}
 <html>
 <head>
 </head>
 <body>
 	<p>The time is {% current_time '%Y-%m-%d %I:%M %p' %}.</p>
 </body>
 </html>
	# -- coding: utf-8 --
	import datetime

	from django import template


	register = template.Library()
	# これかデコレータ(@register.tag)によってタグを登録する
	# register.tag('current_time', do_current_time)


	# name を省略すると関数名をそのままタグ名として使用する
	@register.tag(name='current_time')
	def do_current_time(parser, token):
	try:
	# split_contents() knows not to split quoted strings.
	tag_name, format_string = token.split_contents()
	except ValueError:
	raise template.TemplateSyntaxError("%r tag requires a single argument" % token.contents.split()[0])
	if not (format_string[0] == format_string[-1] and format_string[0] in ('"', "'")):
	raise template.TemplateSyntaxError("%r tag's argument should be in quotes" % tag_name)
	return CurrentTimeNode(format_string[1:-1])


	class CurrentTimeNode(template.Node):
	def __init__(self, format_string):
	self.format_string = format_string
	def render(self, context):
	return datetime.datetime.now().strftime(self.format_string)
	from django.conf.urls import patterns, include, url
	from django.views.generic import TemplateView

	urlpatterns = patterns('',
	(r'^', TemplateView.as_view(template_name='custom_template_tags/main_page.html')),
	)
	{% load current_time %}
	<html>
	<head>
	</head>
	<body>
	<p>The time is {% current_time '%Y-%m-%d %I:%M %p' %}.</p>
	</body>
	</html>