from django import template
from middleware import threadlocals

register = template.Library()

@register.tag
def embed(parser, token):
    try:
        tag_name, id, template = token.split_contents()
    except ValueError:
        raise template.TemplateSyntaxError, "%r tag requires a element id and a template path" % token.contents.split()[0]

    nodelist = parser.parse(('endembed',))
    parser.delete_first_token()
    return Embed(nodelist, id, template)

class Embed(template.Node):
    def __init__(self, nodelist, id, template):
        self.nodelist = nodelist
        self.id = id
        self.template = template

    def render(self, context):
        try:
            value = self.nodelist.render(context)                
            
            return template.loader.render_to_string(self.template, {
                "id": self.id,
                "template": value,
            })
        except template.TemplateDoesNotExist:
            raise template.TemplateDoesNotExist, "Template does not exist: %s" % self.template