48 lines
1.8 KiB
Python
48 lines
1.8 KiB
Python
"""
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Wrapper for loading templates from the filesystem.
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"""
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from django.conf import settings
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from django.template.base import TemplateDoesNotExist
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from django.template.loader import BaseLoader
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from django.utils._os import safe_join
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class Loader(BaseLoader):
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is_usable = True
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def get_template_sources(self, template_name, template_dirs=None):
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"""
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Returns the absolute paths to "template_name", when appended to each
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directory in "template_dirs". Any paths that don't lie inside one of the
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template dirs are excluded from the result set, for security reasons.
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"""
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if not template_dirs:
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template_dirs = settings.TEMPLATE_DIRS
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for template_dir in template_dirs:
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try:
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yield safe_join(template_dir, template_name)
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except UnicodeDecodeError:
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# The template dir name was a bytestring that wasn't valid UTF-8.
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raise
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except ValueError:
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# The joined path was located outside of this particular
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# template_dir (it might be inside another one, so this isn't
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# fatal).
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pass
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def load_template_source(self, template_name, template_dirs=None):
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tried = []
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for filepath in self.get_template_sources(template_name, template_dirs):
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try:
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with open(filepath, 'rb') as fp:
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return (fp.read().decode(settings.FILE_CHARSET), filepath)
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except IOError:
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tried.append(filepath)
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if tried:
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error_msg = "Tried %s" % tried
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else:
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error_msg = "Your TEMPLATE_DIRS setting is empty. Change it to point to at least one template directory."
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raise TemplateDoesNotExist(error_msg)
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load_template_source.is_usable = True
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