language property exported with str and dict values

[zopyx]

I have a Plone 5.2 AT site that exports most of the content with

 "language": "" 

and some content items as

    "language": {
        "title": "Deutsch",
        "token": "de"
    },

This leads to import errors such as

2022-04-18 14:24:26,230 WARNING [collective.exportimport.import_content:352][waitress-2] cannot deserialize http://nohost/eteaching/projekt/rechte/hochschulmitglieder-als-urheber: BadRequest([{'message': 'Constraint not satisfied', 'field': 'language', 'error': 'ValidationError'}])

[mauritsvanrees]

Is 'de' in the allowed languages of the new site?

[petschki]

In our current project, we have item language exported from Plone 4.3.20 as "language": "en" and if the target Plone Site doesn't allow en we get the deserialization error. otherwise it gets imported correctly.

[mauritsvanrees]

I have this in custom code, which fixes the problem for my case (export example content from English site, import it in Spanish site):

class CustomImportContent(ImportContent):
    def global_dict_hook(self, item):
        # When we export English content and import it in the Spanish site,
        # we must change the langue to Spanish, otherwise you get an error:
        # zExceptions.BadRequest: [{'message': 'Constraint not satisfied',
        # 'field': 'language', 'error': 'ValidationError'}]
        # BTW, the value is for example:
        # {'title': 'Nederlands', 'token': 'nl'}
        # Hey, wouldn't the easiest be to drop the key?  Seems to work fine.
        # Alternatively, use self.context.Language(), so a language is really set.
        # This might be better for multilingual sites.
        language = item.pop("language", None)
        if language is not None:
            logger.info("Popped language %s from item.", language)
        return item