Page translations support - if all languages of one page aren't published site starts raising the `Title matching query does not exist error`

[viktor-yunenko]

• djangocms-spa-vue-js version: 0.1.25
• aldryn-django-cms: 3.4.6.3
• Django version: 1.11.27
• Python version: 3.6.3
• Operating System: Debian (divio)

Reproduction

• create a new root page test using the non-default language, eg English, leave the other languages empty (not configured)
• publish its English version, leaving other languages empty
• all pages start raising the error

Environment:


Request Method: GET
Request URL: https://stage.ch.aldryn.io/it/test-it-copy/?edit_off

Django Version: 1.11.27
Python Version: 3.6.3
Installed Applications:
['taggit',
 'meta_tagger',
 'modeltranslation',
 'translations',
 'aldryn_addons',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.messages',
 'aldryn_sso',
 'djangocms_admin_style',
 'django.contrib.admin',
 'django.contrib.staticfiles',
 'aldryn_django',
 'aldryn_sites',
 'cms',
 'aldryn_django_cms',
 'menus',
 'sekizai',
 'treebeard',
 'parler',
 'aldryn_boilerplates',
 'django.contrib.sitemaps',
 'compressor',
 'robots',
 'captcha',
 'django_select2',
 'filer.contrib.django_cms',
 'aldryn_google_analytics',
 'djangocms_file',
 'djangocms_googlemap',
 'djangocms_history',
 'djangocms_link',
 'djangocms_picture',
 'djangocms_snippet',
 'djangocms_style',
 'djangocms_text_ckeditor',
 'djangocms_video',
 'filer',
 'easy_thumbnails',
 'mptt',
 'polymorphic',
 'constance',
 'constance.backends.database',
 'djangocms_spa',
 'djangocms_spa_vue_js',
 'rest_framework',
 'adminsortable2',
 'dreicore',
 'contents',
 'products',
 'spa_serializer',
 'contactrequests',
 'translator',
 'lockdown']
Installed Middleware:
['cms.middleware.utils.ApphookReloadMiddleware',
 'django.middleware.gzip.GZipMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'aldryn_sso.middleware.AccessControlMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.locale.LocaleMiddleware',
 'django.contrib.sites.middleware.CurrentSiteMiddleware',
 'aldryn_sites.middleware.SiteMiddleware',
 'django.middleware.security.SecurityMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware',
 'cms.middleware.user.CurrentUserMiddleware',
 'cms.middleware.page.CurrentPageMiddleware',
 'cms.middleware.toolbar.ToolbarMiddleware',
 'cms.middleware.language.LanguageCookieMiddleware',
 'lockdown.middleware.LockdownMiddleware']



Traceback:

File "/virtualenv/lib/python3.6/site-packages/django/core/handlers/exception.py" in inner
  41.             response = get_response(request)

File "/virtualenv/lib/python3.6/site-packages/django/core/handlers/base.py" in _legacy_get_response
  249.             response = self._get_response(request)

File "/virtualenv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  217.                 response = self.process_exception_by_middleware(e, request)

File "/virtualenv/lib/python3.6/site-packages/django/core/handlers/base.py" in _get_response
  215.                 response = response.render()

File "/virtualenv/lib/python3.6/site-packages/django/template/response.py" in render
  107.             self.content = self.rendered_content

File "/virtualenv/lib/python3.6/site-packages/django/template/response.py" in rendered_content
  84.         content = template.render(context, self._request)

File "/virtualenv/lib/python3.6/site-packages/django/template/backends/django.py" in render
  66.             return self.template.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render
  207.                     return self._render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in _render
  199.         return self.nodelist.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/loader_tags.py" in render
  177.             return compiled_parent._render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in _render
  199.         return self.nodelist.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/virtualenv/lib/python3.6/site-packages/classytags/core.py" in render
  154.         return self.render_tag(context, **kwargs)

File "/virtualenv/lib/python3.6/site-packages/sekizai/templatetags/sekizai_tags.py" in render_tag
  88.         rendered_contents = nodelist.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/virtualenv/lib/python3.6/site-packages/classytags/core.py" in render
  154.         return self.render_tag(context, **kwargs)

File "/virtualenv/lib/python3.6/site-packages/cms/templatetags/cms_tags.py" in render_tag
  499.         rendered_contents = nodelist.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/virtualenv/lib/python3.6/site-packages/classytags/core.py" in render
  154.         return self.render_tag(context, **kwargs)

File "/virtualenv/lib/python3.6/site-packages/sekizai/templatetags/sekizai_tags.py" in render_tag
  88.         rendered_contents = nodelist.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/loader_tags.py" in render
  72.                 result = block.nodelist.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render
  990.                 bit = node.render_annotated(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/base.py" in render_annotated
  957.             return self.render(context)

File "/virtualenv/lib/python3.6/site-packages/django/template/library.py" in render
  203.         output = self.func(*resolved_args, **resolved_kwargs)

File "/virtualenv/lib/python3.6/site-packages/djangocms_spa_vue_js/templatetags/router_tags.py" in vue_js_router
  17.         router = get_vue_js_router(context=context)

File "/virtualenv/lib/python3.6/site-packages/djangocms_spa_vue_js/menu_helpers.py" in get_vue_js_router
  24.     menu_nodes = menu_renderer.get_nodes()

File "/virtualenv/lib/python3.6/site-packages/django/utils/functional.py" in __wrapper__
  115.                 return getattr(res, method_name)(*args, **kw)

File "/virtualenv/lib/python3.6/site-packages/menus/menu_pool.py" in get_nodes
  246.             breadcrumb=breadcrumb,

File "/virtualenv/lib/python3.6/site-packages/menus/menu_pool.py" in apply_modifiers
  230.                 self.request, nodes, namespace, root_id, post_cut, breadcrumb)

File "/virtualenv/lib/python3.6/site-packages/djangocms_spa_vue_js/cms_menus.py" in modify
  45.             node_route = get_node_route(request=request, node=node, renderer=self.renderer)

File "/virtualenv/lib/python3.6/site-packages/djangocms_spa_vue_js/menu_helpers.py" in get_node_route
  72.         route = get_node_route_for_cms_page(request, node, route_data)

File "/virtualenv/lib/python3.6/site-packages/djangocms_spa_vue_js/menu_helpers.py" in get_node_route_for_cms_page
  109.     cms_page_title = cms_page.title_set.get(language=request.LANGUAGE_CODE)

File "/virtualenv/lib/python3.6/site-packages/django/db/models/manager.py" in manager_method
  85.                 return getattr(self.get_queryset(), name)(*args, **kwargs)

File "/virtualenv/lib/python3.6/site-packages/django/db/models/query.py" in get
  380.                 self.model._meta.object_name

Exception Type: DoesNotExist at /it/test-it-copy/
Exception Value: Title matching query does not exist.

I suspect that's the problematic piece of code:

[viktor-yunenko]

And I believe there's a similar problem but it breaks only one page. Yet I wasn't able to reproduce it because now I'm getting the error from above all the time instead.

Approximately the following has happened:

• a page was created and published, but two additional translations of that page weren't published
• the page started raising the something similar to a page reverse error (probably when it was rendering the available translations urls), because instead of trying to reverse the page slug is was trying to reverse an empty string

Publishing of the missing translations resolved the problem. But again when I'm trying to reproduce it I'm only getting this other error related to the page title. Which is also fixable by publishing of all the pages.

Still it looks critical since on a production server the editor simply starts getting a 500 error.

[viktor-yunenko]

Based on the git history it looks as the website that I was debugging was developed by Dreipol, maybe you saw that issue before? It might be project specific (CMS 3.4 is a bit old), but I wanted to ask you anyway.

[chschuermann]

HI @victor-yunenko. We no longer actively develop this package and do not have many projects depending on it. If you are able to find a nice solution we are happy to merge a PR.