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Non-ASCII/Unicode/Cyrillic URL on Website

Anton Chepurov
on 8/9/16, 2:10 AM 1,553 views

My goal is to turn the standard website URL of a Product:


into a different format:


where ID is moved to right after the `/shop/product/`, brand follows ID, Internal Reference is added to the end of the URL, and most importantly the product name is translated to the language currently selected (in this example - Russian).

I use the following code to achieve all but translations:

class my_module_website_sale(website_sale):
    def product(self, product, category='', search='', **kwargs):
        return super(my_module_website_sale, self).product(product, category=category, search=search, **kwargs)

and this:

from openerp.addons.website.models import website
from openerp.addons.website.models.ir_http import RequestUID
from openerp.addons.website.models.website import slugify

old_slug = website.slug

def slug_product(value):
    if isinstance(value, tuple):
        id, brand, name, default_code = value
        id, brand, name, default_code = value.id, value.product_variant_ids[0].brand_id.name, value.name, value.default_code
    return '%s/%s/%s/%s' % (id, brand, slugify(name), default_code)

def slug(value):
    if isinstance(value, browse_record) and value._name == 'product.template':
        return slug_product(value)
    return old_slug(value)

website.slug = slug

class ProductModelConverter(werkzeug.routing.PathConverter):
    def __init__(self, url_map):
        super(ProductModelConverter, self).__init__(url_map)
        self.regex = '([0-9]+)/.*'

    def to_python(self, value):
        m = re.match(self.regex, value)
        _uid = RequestUID(value=value, match=m, converter=self)
        return request.registry['product.template'].browse(
            request.cr, _uid, int(m.group(1)), context=request.context)

    def to_url(self, value):
        return slug_product(value)

    def generate(self, cr, uid, query=None, args=None, context=None):
        brands = {b['id']: b['name'] for b in fetchdictall(cr, 'SELECT id, name FROM my_module_brand')}
        products = [(tmpl, brands.get(brand, ''), name, code)
                            for (tmpl, brand, name, code) in
                            fetchall(cr, 'SELECT product_tmpl_id, brand_id, name_template, default_code FROM product_product '
                                                'LEFT JOIN product_template t ON product_tmpl_id = t.id WHERE t.website_published = true ORDER BY product_tmpl_id')]
        templates_done = set()
        for product in products:
            if product[0] not in templates_done:
                yield {'loc': product}

class ir_http(models.AbstractModel):
    _inherit = 'ir.http'

    def _get_converters(self):
        return dict(super(ir_http, self)._get_converters(), product_model=ProductModelConverter)

 This code works perfectly well for the ASCII URLs, e.g. this URL brings me to the required website shop page:


However, once translated to Russian, this URL raises an error on the werkzeug level (i.e. not even reaching my code, AFAIU):


The error:

2016-08-09 05:15:26,210 3902 INFO mgr werkzeug: - - [09/Aug/2016 05:15:26] "GET /ru_RU/shop/product/5/ipad/%D0%B2%D0%BE%D0%B4%D1%8F%D0%BD%D0%BE%D0%B9-%D1%88%D0%BB%D0%B0%D0%BD%D0%B3/a2323 HTTP/1.0" 500 -
2016-08-09 05:15:26,217 3902 ERROR mgr werkzeug: Error on request:
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/werkzeug/serving.py", line 177, in run_wsgi
File "/usr/lib/python2.7/dist-packages/werkzeug/serving.py", line 165, in execute
application_iter = app(environ, start_response)
File "/home/a0c/programs/openerp/odoo/openerp/service/server.py", line 291, in app
return self.app(e, s)
File "/home/a0c/programs/openerp/odoo/openerp/service/wsgi_server.py", line 224, in application
return application_unproxied(environ, start_response)
File "/home/a0c/programs/openerp/odoo/openerp/service/wsgi_server.py", line 210, in application_unproxied
result = handler(environ, start_response)
File "/home/a0c/programs/openerp/odoo/openerp/http.py", line 1292, in __call__
return self.dispatch(environ, start_response)
File "/home/a0c/programs/openerp/odoo/openerp/http.py", line 1266, in __call__
return self.app(environ, start_wrapped)
File "/usr/lib/python2.7/dist-packages/werkzeug/wsgi.py", line 579, in __call__
return self.app(environ, start_response)
File "/home/a0c/programs/openerp/odoo/openerp/http.py", line 1266, in __call__
return self.app(environ, start_wrapped)
File "/usr/lib/python2.7/dist-packages/werkzeug/wsgi.py", line 579, in __call__
return self.app(environ, start_response)
File "/home/a0c/programs/openerp/odoo/openerp/http.py", line 1439, in dispatch
result = ir_http._dispatch()
File "/home/a0c/programs/openerp/odoo/addons/crm/ir_http.py", line 13, in _dispatch
response = super(ir_http, self)._dispatch()
File "/home/a0c/programs/openerp/odoo/addons/website/models/ir_http.py", line 145, in _dispatch
return self.reroute('/'.join(path) or '/')
File "/home/a0c/programs/openerp/odoo/addons/website/models/ir_http.py", line 166, in reroute
return self._dispatch()
File "/home/a0c/programs/openerp/odoo/addons/crm/ir_http.py", line 13, in _dispatch
response = super(ir_http, self)._dispatch()
File "/home/a0c/programs/openerp/odoo/addons/website/models/ir_http.py", line 72, in _dispatch
func, arguments = self._find_handler()
File "/home/a0c/programs/openerp/odoo/openerp/addons/base/ir/ir_http.py", line 65, in _find_handler
return self.routing_map().bind_to_environ(request.httprequest.environ).match(return_rule=return_rule)
File "/usr/lib/python2.7/dist-packages/werkzeug/routing.py", line 1202, in bind_to_environ
path_info = _get_wsgi_string('PATH_INFO')
File "/usr/lib/python2.7/dist-packages/werkzeug/routing.py", line 1199, in _get_wsgi_string
return wsgi_decoding_dance(val, self.charset)
File "/usr/lib/python2.7/dist-packages/werkzeug/_compat.py", line 92, in wsgi_decoding_dance
return s.decode(charset, errors)
File "/usr/lib/python2.7/encodings/utf_8.py", line 16, in decode
return codecs.utf_8_decode(input, errors, True)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 21-27: ordinal not in range(128)

Does anybody have an idea how to properly configure werkzeug's PathConverters (or I dunno what else) to make them accept non-ASCII URLs?

Many thanks!

Anton Chepurov
On 8/9/16, 4:15 PM

Solved this by patching werkzeug and by making slugify() and url_for() support unicode URLs.

Change wsgi_decoding_dance() in werkzeug/_compat.py to:

 def wsgi_decoding_dance(s, charset='utf-8', errors='replace'):
    if isinstance(s, unicode):
        return s
    return s.decode(charset, errors)

This is similar to wsgi_encoding_dance():

 def wsgi_encoding_dance(s, charset='utf-8', errors='replace'):
    if isinstance(s, bytes):
        return s
    return s.encode(charset, errors)

And in the code snippet above, instead of importing slugify() from odoo

from openerp.addons.website.models.website import slugify

define your own slugify() to be used in slug_product():

import unicodedata
from openerp.tools import ustr

def slugify(s, max_length=None):
    s = ustr(s)
    uni = unicodedata.normalize('NFKC', s)
    slug = re.sub('[\W_]', ' ', uni, flags=re.UNICODE).strip().lower()
    slug = re.sub('[-\s]+', '-', slug)
    return slug[:max_length]

Finally, override url_for():

import urlparse
from openerp.addons.web.http import request
from openerp.addons.website.models.website import is_multilang_url

def url_for(path_or_uri, lang=None):
    if isinstance(path_or_uri, unicode):
        path_or_uri = path_or_uri.encode('utf-8')
    current_path = request.httprequest.path
    if isinstance(current_path, unicode):
        current_path = current_path.encode('utf-8')
    location = path_or_uri.strip()
    force_lang = lang is not None
    url = urlparse.urlparse(location)

    if request and not url.netloc and not url.scheme and (url.path or force_lang):
        location = urlparse.urljoin(current_path, location)

        lang = lang or request.context.get('lang')
        langs = [lg[0] for lg in request.website.get_languages()]

        if (len(langs) > 1 or force_lang) and is_multilang_url(location, langs):
            ps = location.decode('utf-8').split('/')
            if ps[1] in langs:
                # Replace the language only if we explicitly provide a language to url_for
                if force_lang:
                    ps[1] = lang
                # Remove the default language unless it's explicitly provided
                elif ps[1] == request.website.default_lang_code:
            # Insert the context language or the provided language
            elif lang != request.website.default_lang_code or force_lang:
                ps.insert(1, lang)
            location = '/'.join(ps)
    return location if isinstance(location, unicode) else location.decode('utf-8')

import openerp
openerp.addons.website.models.website.url_for = url_for

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Asked: 8/9/16, 2:10 AM
Seen: 1553 times
Last updated: 9/15/16, 9:28 AM