Create a new category in one language but saved to another language

[georgema1982]

I'm not sure if it's a treebeard or aldryn-categories bug. I have two languages on my site, Chinese and English. If I log into admin site in English and create a category in Chinese tab, the content would be saved to English. The opposite is also true. If I log into admin site in Chinese and create a category in English tab, the content is saved to Chinese. It appears to me that the language tab doesn't matter at all. It all depends on what language of the Admin site is in at the moment.

I'm pretty sure it's not parler's problem per se because I have other model in parler that doesn't suffer from this problem.

[georgema1982]

I think the problem is in save function of treebeard's MoveNodeForm. self.instance is always overwritten by another instance which losts info like the translation cache and current language etc.

[georgema1982]

The workaround is override the save function of CategoryForm by copying each line of MoveNodeForm's save function (yes, I know treebeard's code quality is left much to be desired) and change the line where

cl_data = {}

to

cl_data = {'_current_language': self.instance._current_language}