Why language code changed by itself?

asked 2016-12-25 18:56:54 -0600

AaronHuang gravatar image

updated 2016-12-25 19:23:02 -0600

Someday I found that I cann't voteup for somebody. Although the upvote sign turned green, but his karma doesn't go up.

In settings.py, I have

LANGUAGE_CODE = 'zh-TW'
LANGUAGES = (('zh-TW', 'Chinese'),)

And I found that in the database, the repute table's language code changed by it self to lowercase after some day.

image description

Does anyone know how to fix this?
Why it set the language_code to 'zh-tw' for my language_code is 'zh-TW'?

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