┌────────────────────────────────┐ │ ░░░ ░░▓ ░▓▓ ███ ▓▓░ ▓░░ │ │ ~ M O O N ~ │ └────────────────────────────────┘

prd-web-01.centraldc.gr

✎ EDIT FILE

EDITING: cache_extension.py

from jinja2 import nodes
from jinja2.ext import Extension

class FragmentCacheExtension(Extension):
    # a set of names that trigger the extension.
    tags = {"cache"}

def __init__(self, environment):
        super().__init__(environment)

# add the defaults to the environment
        environment.extend(fragment_cache_prefix="", fragment_cache=None)

def parse(self, parser):
        # the first token is the token that started the tag.  In our case
        # we only listen to ``'cache'`` so this will be a name token with
        # `cache` as value.  We get the line number so that we can give
        # that line number to the nodes we create by hand.
        lineno = next(parser.stream).lineno

# now we parse a single expression that is used as cache key.
        args = [parser.parse_expression()]

# if there is a comma, the user provided a timeout.  If not use
        # None as second parameter.
        if parser.stream.skip_if("comma"):
            args.append(parser.parse_expression())
        else:
            args.append(nodes.Const(None))

# now we parse the body of the cache block up to `endcache` and
        # drop the needle (which would always be `endcache` in that case)
        body = parser.parse_statements(["name:endcache"], drop_needle=True)

# now return a `CallBlock` node that calls our _cache_support
        # helper method on this extension.
        return nodes.CallBlock(
            self.call_method("_cache_support", args), [], [], body
        ).set_lineno(lineno)

def _cache_support(self, name, timeout, caller):
        """Helper callback."""
        key = self.environment.fragment_cache_prefix + name

# try to load the block from the cache
        # if there is no fragment in the cache, render it and store
        # it in the cache.
        rv = self.environment.fragment_cache.get(key)
        if rv is not None:
            return rv
        rv = caller()
        self.environment.fragment_cache.add(key, rv, timeout)
        return rv

CANCEL

Name	Type	Size	Modified	Actions
↩ ..	DIR	—	—
📄 cache_extension.py	PY	2 KB	2025-03-05 19:51	EDIT
📄 inline_gettext_extension.py	PY	2.3 KB	2025-03-05 19:51	EDIT

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