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# https://groups.google.com/forum/#!topic/django-rest-framework/WTZ0H6dyJe4 | |
class TranslateSerializer(serializers.ModelSerializer): | |
def __init__(self, *args, **kwargs): | |
super(TranslateSerializer, self).__init__(*args, **kwargs) | |
self.translate_fields = getattr(self.Meta, 'translate_fields', ()) | |
if kwargs.get('context', None): | |
self.lang = utils.get_request_language(kwargs['context'].get('request', None)) | |
def to_native(self, obj): | |
# Exclude ALWAYS language specific fields | |
for language in settings.LANGUAGES: | |
if language[0] != 'en': | |
for field in self.translate_fields: | |
key = field + '_' + language[0] | |
if self.fields.get(key): | |
self.fields.pop(key) | |
ret = super(serializers.ModelSerializer, self).to_native(obj) | |
# Get current language and give the fields | |
if self.lang != 'en': | |
for field in self.translate_fields: | |
trans = getattr(obj, field + "_" + self.lang) | |
if trans: | |
ret[field] = trans | |
return ret | |
def from_native(self, data, files): | |
instance = getattr(self, 'object', None) | |
if self.lang != 'en': | |
for field in self.translate_fields: | |
value = data.get(field) or None | |
if value: | |
data[field + "_" + self.lang] = value | |
# If is instance (existent object), set the original attr | |
data[field] = getattr(instance, field, data[field]) | |
ret = super(serializers.ModelSerializer, self).from_native(data, files) | |
return ret | |
# That's it. So, let's say I have a model Tag with name and name_es attributes among others. I can use this now: | |
class ProductTagSerializer(TranslateSerializer): | |
class Meta: | |
model = ProductTag | |
translate_fields = ('name',) |
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