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53 | from django import template
from django.template.defaultfilters import stringfilter
from oembed.core import replace
register = template.Library()
def oembed(input):
return replace(input)
oembed.is_safe = True
oembed = stringfilter(oembed)
register.filter('oembed', oembed)
def do_oembed(parser, token):
"""
A node which parses everything between its two nodes, and replaces any links
with OEmbed-provided objects, if possible.
Supports one optional argument, which is the maximum width and height,
specified like so:
{% oembed 640x480 %}http://www.viddler.com/explore/SYSTM/videos/49/{% endoembed %}
"""
args = token.contents.split()
if len(args) > 2:
raise template.TemplateSyntaxError("Oembed tag takes only one (option" \
"al) argument: WIDTHxHEIGHT, where WIDTH and HEIGHT are positive " \
"integers.")
if len(args) == 2:
width, height = args[1].lower().split('x')
if not width and height:
raise template.TemplateSyntaxError("Oembed's optional WIDTHxHEIGH" \
"T argument requires WIDTH and HEIGHT to be positive integers.")
else:
width, height = None, None
nodelist = parser.parse(('endoembed',))
parser.delete_first_token()
return OEmbedNode(nodelist, width, height)
register.tag('oembed', do_oembed)
class OEmbedNode(template.Node):
def __init__(self, nodelist, width, height):
self.nodelist = nodelist
self.width = width
self.height = height
def render(self, context):
kwargs = {}
if self.width and self.height:
kwargs['max_width'] = self.width
kwargs['max_height'] = self.height
return replace(self.nodelist.render(context), **kwargs)
|
