from django import template
from django.conf import settings
from django.contrib.sites.models import Site
+from django.core.urlresolvers import reverse, NoReverseMatch
+from django.template.defaulttags import kwarg_re
+from django.utils.encoding import smart_str
+from philo.exceptions import ViewCanNotProvideSubpath
register = template.Library()
class NodeURLNode(template.Node):
- def __init__(self, node, with_obj, as_var):
- if node is not None:
- self.node = template.Variable(node)
- else:
- self.node = None
-
- if with_obj is not None:
- self.with_obj = template.Variable(with_obj)
- else:
- self.with_obj = None
-
+ def __init__(self, node, as_var, with_obj=None, view_name=None, args=None, kwargs=None):
self.as_var = as_var
+ self.view_name = view_name
+
+ # Because the following variables have already been compiled as filters if they exist, they don't need to be re-scanned as template variables.
+ self.node = node
+ self.with_obj = with_obj
+ self.args = args
+ self.kwargs = kwargs
def render(self, context):
- try:
- if self.node:
- node = self.node.resolve(context)
- else:
- node = context['node']
- current_site = Site.objects.get_current()
- if node.has_ancestor(current_site.root_node):
- url = '/' + node.get_path(root=current_site.root_node)
- if self.with_obj:
- with_obj = self.with_obj.resolve(context)
- subpath = node.view.get_subpath(with_obj)
- if subpath[0] is '/':
- subpath = subpath[1:]
- url += subpath
- else:
+ if self.node:
+ node = self.node.resolve(context)
+ else:
+ node = context.get('node', None)
+
+ if not node:
+ return settings.TEMPLATE_STRING_IF_INVALID
+
+ if self.with_obj is None and self.view_name is None:
+ url = node.get_absolute_url()
+ else:
+ if not node.view.accepts_subpath:
return settings.TEMPLATE_STRING_IF_INVALID
- if self.as_var:
- context[self.as_var] = url
- return settings.TEMPLATE_STRING_IF_INVALID
+ if self.with_obj is not None:
+ try:
+ view_name, args, kwargs = node.view.get_reverse_params(self.with_obj.resolve(context))
+ except ViewCanNotProvideSubpath:
+ return settings.TEMPLATE_STRING_IF_INVALID
+ else: # self.view_name is not None
+ view_name = self.view_name
+ args = [arg.resolve(context) for arg in self.args]
+ kwargs = dict([(smart_str(k, 'ascii'), v.resolve(context)) for k, v in self.kwargs.items()])
+
+ url = ''
+ try:
+ subpath = reverse(view_name, urlconf=node.view, args=args, kwargs=kwargs)
+ except NoReverseMatch:
+ if self.as_var is None:
+ if settings.TEMPLATE_DEBUG:
+ raise
+ return settings.TEMPLATE_STRING_IF_INVALID
else:
- return url
- except:
- return settings.TEMPLATE_STRING_IF_INVALID
+ url = node.construct_url(subpath)
+
+ if self.as_var:
+ context[self.as_var] = url
+ return ''
+ else:
+ return url
@register.tag(name='node_url')
def do_node_url(parser, token):
"""
- {% node_url [<node>] [with <obj>] [as <var>] %}
+ {% node_url [for <node>] [as <var>] %}
+ {% node_url with <obj> [for <node>] [as <var>] %}
+ {% node_url <view_name> [<arg1> [<arg2> ...] ] [for <node>] [as <var>] %}
+ {% node_url <view_name> [<key1>=<value1> [<key2>=<value2> ...] ] [for <node>] [as <var>]%}
"""
params = token.split_contents()
tag = params[0]
+ as_var = None
+ with_obj = None
+ node = None
+ params = params[1:]
- if len(params) <= 6:
- node = None
- with_obj = None
- as_var = None
- remaining_tokens = params[1:]
- while remaining_tokens:
- option_token = remaining_tokens.pop(0)
- if option_token == 'with':
- try:
- with_obj = remaining_tokens.pop(0)
- except IndexError:
- raise template.TemplateSyntaxError('"%s" template tag option "with" requires an argument specifying an object handled by the view on the node' % tag)
- elif option_token == 'as':
- try:
- as_var = remaining_tokens.pop(0)
- except IndexError:
- raise template.TemplateSyntaxError('"%s" template tag option "as" requires an argument specifying a variable name' % tag)
- else: # node
- node = option_token
- return NodeURLNode(node=node, with_obj=with_obj, as_var=as_var)
- else:
- raise template.TemplateSyntaxError('"%s" template tag cannot accept more than five arguments' % tag)
\ No newline at end of file
+ if len(params) >= 2 and params[-2] == 'as':
+ as_var = params[-1]
+ params = params[:-2]
+
+ if len(params) >= 2 and params[-2] == 'for':
+ node = parser.compile_filter(params[-1])
+ params = params[:-2]
+
+ if len(params) >= 2 and params[-2] == 'with':
+ with_obj = parser.compile_filter(params[-1])
+ params = params[:-2]
+
+ if with_obj is not None:
+ if params:
+ raise template.TemplateSyntaxError('`%s` template tag accepts no arguments or keyword arguments if with <obj> is specified.' % tag)
+ return NodeURLNode(with_obj=with_obj, node=node, as_var=as_var)
+
+ if params:
+ args = []
+ kwargs = {}
+ view_name = params.pop(0)
+ for param in params:
+ match = kwarg_re.match(param)
+ if not match:
+ raise TemplateSyntaxError("Malformed arguments to `%s` tag" % tag)
+ name, value = match.groups()
+ if name:
+ kwargs[name] = parser.compile_filter(value)
+ else:
+ args.append(parser.compile_filter(value))
+ return NodeURLNode(view_name=view_name, args=args, kwargs=kwargs, node=node, as_var=as_var)
+
+ return NodeURLNode(node=node, as_var=as_var)
\ No newline at end of file
git.ithinksw.org / philo.git / blobdiff