From 26eb7c786b651fcac96909c18817313bb4dc3306 Mon Sep 17 00:00:00 2001 From: Kevin Chang Date: Fri, 27 Feb 2015 13:51:14 -0800 Subject: [PATCH] Overriding Field.__deepcopy__ for RegexField Compiled regex pattern cannot be deepcopied. The overridden __deepcopy__ mimics the behavior as the parent method, but checks for `regex` instead of `validators` --- rest_framework/fields.py | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/rest_framework/fields.py b/rest_framework/fields.py index 13301f31b4..5def05146c 100644 --- a/rest_framework/fields.py +++ b/rest_framework/fields.py @@ -612,6 +612,18 @@ def __init__(self, regex, **kwargs): validator = RegexValidator(regex, message=self.error_messages['invalid']) self.validators.append(validator) + def __deepcopy__(self, memo): + # Handling case when regex is not passed in kwargs. + args = self._args[:1] + copy.deepcopy(self._args[1:]) + kwargs = dict(self._kwargs) + + # deepcopy doesn't work on compiled regex pattern + regex = kwargs.pop('regex', None) + kwargs = copy.deepcopy(kwargs) + if regex is not None: + kwargs['regex'] = regex + return self.__class__(*args, **kwargs) + class SlugField(CharField): default_error_messages = { pFad - Phonifier reborn

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