#!/usr/bin/env python
from jinja2.environment import Environment
from jinja2.ext import Extension
class cls(object):
name=None
def __init__(self,value):
self.name=value
def name(items,value):
return [v for v in items if v.name==value]
class MyExtension(Extension):
def __init__(self, environment):
environment.filters["name"] = name
source="""
{{ items|name("item1") }}
"""
tmpl = Environment(
extensions=[MyExtension]
).from_string(source)
print tmpl.render(
items=[cls("item1"),cls("item2"),cls("item3")]
)
