app/django/template/loaders/filesystem.py
author Sverre Rabbelier <srabbelier@gmail.com>
Thu, 16 Oct 2008 23:23:16 +0000
changeset 363 d35ffa6ca643
parent 323 ff1a9aa48cfd
permissions -rw-r--r--
Add a framework for generic views This commit does not enable the new code, as such there should be no change in functionality. In order to use the new code the maps.py file should be updated to point at the new views/models/sponsor.py module. Patch by: Sverre Rabbelier Reviewed by: to-be-reviewed

"""
Wrapper for loading templates from the filesystem.
"""

from django.conf import settings
from django.template import TemplateDoesNotExist
from django.utils._os import safe_join

def get_template_sources(template_name, template_dirs=None):
    """
    Returns the absolute paths to "template_name", when appended to each
    directory in "template_dirs". Any paths that don't lie inside one of the
    template dirs are excluded from the result set, for security reasons.
    """
    if not template_dirs:
        template_dirs = settings.TEMPLATE_DIRS
    for template_dir in template_dirs:
        try:
            yield safe_join(template_dir, template_name)
        except UnicodeDecodeError:
            # The template dir name was a bytestring that wasn't valid UTF-8.
            raise
        except ValueError:
            # The joined path was located outside of this particular
            # template_dir (it might be inside another one, so this isn't
            # fatal).
            pass

def load_template_source(template_name, template_dirs=None):
    tried = []
    for filepath in get_template_sources(template_name, template_dirs):
        try:
            return (open(filepath).read().decode(settings.FILE_CHARSET), filepath)
        except IOError:
            tried.append(filepath)
    if tried:
        error_msg = "Tried %s" % tried
    else:
        error_msg = "Your TEMPLATE_DIRS setting is empty. Change it to point to at least one template directory."
    raise TemplateDoesNotExist, error_msg
load_template_source.is_usable = True