def __init__(self, pattern, display_names=None, *args, **kwargs):
if 'coerce' in kwargs:
raise TypeError("`coerce` should not be set directly")
kwargs['coerce'] = force_text
self._pattern = pattern
self._display_names = display_names
# twiddle over the choices.
if 'choices' in kwargs:
templates = kwargs.pop('choices')
if callable(templates):
templates = templates()
else:
templates = find_all_templates(pattern=pattern)
choices = list(template_choices(templates=templates,
display_names=self._display_names))
kwargs.update(choices=choices)
super(TemplateChoiceField, self).__init__(*args, **kwargs)
if not self.required or len(choices) == 0:
self.choices = BLANK_CHOICE_DASH + choices
def wrapper(instance):
def yielder(selected, choices, attname):
for value, key in choices:
yield {
'description': key,
'path': value,
'selected': selected == value,
'_meta': {
'attribute': attname,
'extension': os.path.splitext(value)[1] or None,
'basename': os.path.basename(value),
'dirname': os.path.dirname(value) or None,
'segments': value.split(os.path.sep),
}
}
attname = self.get_attname()
choices = template_choices(
templates=self.fnmatcher.get_matches(),
display_names=self._display_names)
value = getattr(instance, attname)
return tuple(yielder(selected=value, choices=choices, attname=attname))
