Error when adding sections container

[taut-and-yare]

Hi,
And thanks for what seems to be a very useful plugin.

I get a 'NoneType' object is not iterable type error when trying to add a section container:

Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/en/?edit

Django Version: 1.8.9
Python Version: 2.7.9
Installed Applications:
('djangocms_admin_style',
'django.contrib.auth',
'django.contrib.contenttypes',
'django.contrib.sessions',
'django.contrib.admin',
'django.contrib.sites',
'django.contrib.sitemaps',
'django.contrib.staticfiles',
'django.contrib.messages',
'cms',
'menus',
'sekizai',
'treebeard',
'djangocms_text_ckeditor',
'djangocms_style',
'djangocms_column',
'djangocms_file',
'djangocms_googlemap',
'djangocms_inherit',
'djangocms_link',
'djangocms_picture',
'djangocms_teaser',
'djangocms_video',
'reversion',
'grounded_change',
'cmsplugin_sections')
Installed Middleware:
('cms.middleware.utils.ApphookReloadMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.locale.LocaleMiddleware',
'django.middleware.common.CommonMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'cms.middleware.user.CurrentUserMiddleware',
'cms.middleware.page.CurrentPageMiddleware',
'cms.middleware.toolbar.ToolbarMiddleware',
'cms.middleware.language.LanguageCookieMiddleware')

Template error:
In template /Users/.../templates/fullwidth.html, error at line 7
'NoneType' object is not iterable

1 : {% extends "base.html" %}

2 : {% load cms_tags %}

3 :

4 : {% block title %}{% page_attribute "page_title" %}{% endblock title %}

5 :

6 : {% block content %}

7 : {% placeholder "content" %}

8 : {% endblock content %}

9 :

Traceback:
File "/Users/.../lib/python2.7/site-packages/django/core/handlers/base.py" in get_response

1.             response = response.render()
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/response.py" in render

2.         self.content = self.rendered_content
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/response.py" in rendered_content

3.     content = template.render(context, self._request)
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/backends/django.py" in render

4.     return self.template.render(context)
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in render

5.                 return self._render(context)
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in _render

6.     return self.nodelist.render(context)
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in render

7.             bit = self.render_node(node, context)
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/debug.py" in render_node

8.         return node.render(context)
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/loader_tags.py" in render

9.     return compiled_parent._render(context)
   

   File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in _render

10.     return self.nodelist.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in render

11.             bit = self.render_node(node, context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/debug.py" in render_node

12.         return node.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/classytags/core.py" in render

13.     return self.render_tag(context, **kwargs)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/sekizai/templatetags/sekizai_tags.py" in render_tag

14.     rendered_contents = nodelist.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in render

15.             bit = self.render_node(node, context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/debug.py" in render_node

16.         return node.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/classytags/core.py" in render

17.     return self.render_tag(context, **kwargs)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/cms/templatetags/cms_tags.py" in render_tag

18.     rendered_contents = nodelist.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in render

19.             bit = self.render_node(node, context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/debug.py" in render_node

20.         return node.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/loader_tags.py" in render

21.             result = block.nodelist.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/base.py" in render

22.             bit = self.render_node(node, context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/django/template/debug.py" in render_node

23.         return node.render(context)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/classytags/core.py" in render

24.     return self.render_tag(context, **kwargs)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/cms/templatetags/cms_tags.py" in render_tag

25.         content = get_placeholder_content(context, request, page, name, inherit, nodelist)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/cms/templatetags/cms_tags.py" in get_placeholder_content

26.     content = render_placeholder(placeholder, context, name)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/cms/plugin_rendering.py" in render_placeholder

27. content.extend(render_plugins(plugins, context, placeholder, processors))
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/cms/plugin_rendering.py" in render_plugins

28.     out.append(plugin.render_plugin(context, placeholder, processors=processors))
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/cms/models/pluginmodel.py" in render_plugin

29.         context = plugin.render(context, instance, placeholder_slot)
    

    File "/Users/.../.virtualenvs/gc/lib/python2.7/site-packages/cmsplugin_sections/cms_plugins.py" in render

30.     for child in instance.child_plugin_instances:
    

Exception Type: TypeError at /en/
Exception Value: 'NoneType' object is not iterable

[Atterratio]

Nofing?

[marcelox]

Hello, I have the same problem when adding a section container (my versions: django 1.8.12, djangocms 3.2.3), thank you

[taut-and-yare]

@Atterratio I ended up writing my own plugin in the end.. @marcelox You need to add an if statement before the 2 for loops inside cmsplugins.py to make sure instance.child_plugin_instances is not None, so it doesn't try to iterate when there are no sections in the container yet. It is fixed already in one of the branches I believe.