I'm having a problem with applying a template filter in a derived
class:
# jtest.py
import datetime
from jinja2 import Environment, PackageLoader
def timestampformat(value, format="%a %b %d %Y %H:%M:%S"):
return value.strftime(format)
class BaseReport(object):
def __init__(self, template_file):
env = Environment(loader=PackageLoader('jtest', 'templates'))
self.template = env.get_template(template_file)
env.filters['timestampformat'] = timestampformat
class DetailReport(BaseReport):
def __init__(self, **kw):
super(DetailReport, self).__init__('jtest.html')
if __name__ == '__main__':
report = DetailReport()
print report.template.render(now=datetime.datetime.now())
....
Given the contents of jtest.html:
jtest: {{ now | timestampformat }}
The above code produces:
File "/home/jbauer/jtest/templates/jtest.html", line 1, in template
jtest: {{ now | timestampformat }}
jinja2.exceptions.TemplateAssertionError: no filter named
'timestampformat'
How do I make the timestampformat filter work in DetailReport?
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