[FIX] website: language prefixed URL on website

[nle-odoo]

In 10.0 and before, if we were eg. on website page /fr_FR/contact, if
fr_FR language (french) is installed and not the default website
language we would have all URL towards translated content (route with
multilang=True) prefixed with /fr_FR/ (the language code).

With 9cd982b some improvments were done to CDN but this also breaks
language prefixing, so this cause an unecessary redirect:

• we are on /fr_FR/contact and click on "Shop"
• we go to /shop
• odoo redirects US /fr_FR/shop

With this PR, URLs are prefixed with language once again.

note: the added test is hackish but the function tested depends on a lot
of odoo.http things that are hard to use for test (request.render,
request.context, request.httpreqest).

opw-1922051

[nle-odoo]

Hi @KangOl

Do you think the test is okay for this PR, it is a lot hackish since I test low-level function and in is_multilang_url this is called and so should work for the test:

def is_multilang_url(local_url, langs=None):
        # ...
        router = request.httprequest.app.get_db_router(request.db).bind('')
        # Force to check method to POST. Odoo uses methods : ['POST'] and ['GET', 'POST']
        func = router.match(path, method='POST', query_args=query_string)[0]
        return (func.routing.get('website', False) and
                func.routing.get('multilang', func.routing['type'] == 'http'))

[KangOl]

I would put the test(s) in its own class, set the initialization in setUp and create differents functions for each different cases (no request, not website, lang in context, monolang routes)

[nle-odoo]

@KangOl ok, it is done

I will merge on monday if there is no other comment

[KangOl]

Actually, trust robodoo
@robodoo r+

[robodoo]

Merged, thanks!