blob: b8b0d475600c50adde626981bca6e4c9a1e1bd53 (
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from app import app
from jinja2 import contextfilter
from jinja2.filters import make_attrgetter
@app.template_filter('selectattr')
@contextfilter
def do_selectattr(*args, **kwargs):
return _select_or_reject(args, kwargs, lambda x: x)
@app.template_filter('rejectattr')
@contextfilter
def do_rejectattr(*args, **kwargs):
return _select_or_reject(args, kwargs, lambda x: not x)
def _select_or_reject(args, kwargs, modfunc):
context = args[0]
seq = args[1]
try:
attr = args[2]
except LookupError:
raise FilterArgumentError('Missing parameter for attribute name')
transfunc = make_attrgetter(context.environment, attr)
try:
name = args[3]
args = args[4:]
func = lambda item: context.environment.call_test(
name, item, args, kwargs)
except LookupError:
func = bool
if seq:
for item in seq:
if modfunc(func(transfunc(item))):
yield item
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