Django parler：不同语言的相同翻译时出错

Question

EDIT : my bad, i had:

translations = TranslatedFields(
    title=models.CharField(_('Title'), unique=False, max_length=40, null=False, blank=False)
)

I had unique=True , that was the reason, so now the question is how do I require unique title for each language (for example, so there is only one 'Sport' for english language but not in general including all the translations), can I add constraint directly in models.py ?

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I've just added django-parlel to my project and I'm wondering is it my bad or it's really impossible to have same translation more then once .

Case I'm trying to add translation for Polish language for word "Sport", in polish it would be "Sport", just same as in English (which I have by default in app). When trying to add this getting error both when adding from admin panel and when loading fixture . I know that i might leave it blank and it won't really be that bad however I need to have translation for each single word. I'm assuming there is a constraint in parlel

Error in Admin :

Polish:
  Please correct the error below.
    Interests Group Translation with this Title already exists.
    Interests Group Translation with this Title already exists.
Title: [Sport]

django-parlel settings:

PARLER_LANGUAGES = {
    None: (
        {'code': 'en',}, # English
        {'code': 'pl',}, # Polish
        {'code': 'uk',}, # Ukrainian
    ),
    'default': {
        'fallbacks': ['en'],
        'hide_untranslated': False,
    }
}

Model:

class InterestsGroup(TranslatableModel):
    '''
    Group for storing similar interests (that are related to same topic)
    '''
    translations = TranslatedFields(
        title=models.CharField(_('Title'), unique=True, max_length=40, null=False, blank=False)
    )

    class Meta:
        verbose_name = _('Interests Group')
        verbose_name_plural = _('Interests Groups')
        ordering = ['id'] 

Answer 1

Adding this solved my problem:

translations = TranslatedFields(
    title=models.CharField(_('Title'), unique=False, max_length=40, null=False, blank=False),
    meta={'unique_together': [('language_code', 'title')]}  # unique title for each single language/translation
)

Answer 2

I would use this modeltranslation package

I also used django-parler and I think it's better to use modeltranslation instead of django-parler. There will not be a problem about writing same text in different languages and it is also have tabbed view like django-parler