TemplateSyntaxError: Caught an exception while rendering: 'lang'

[GoogleCodeExporter]

This error only occurs when doing:

{% if not current_page %}
    {% load_pages %}
{% endif %}

on pages that are not controlled via page CMS.

Traceback:

Environment:

Request Method: GET
Request URL: http://localhost:8000/gallery/photos/
Django Version: 1.1 SVN-11430
Python Version: 2.5.1
Installed Applications:
['django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.admin',
 'django.contrib.auth',
 'garthfagan.quotes',
 'garthfagan.utils',
 'garthfagan.registrations',
 'pages',
 'mptt',
 'photologue',
 'tagging',
 'django_extensions']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.middleware.doc.XViewMiddleware',
 'django.middleware.locale.LocaleMiddleware')

Template error:
In template /Users/Nick/Code Dumbwaiter/garthfagan/templates/base.html,
error at line 54
   Caught an exception while rendering: 'lang'
   44 :                 <div class="field"><input type="text"
name="newsletter-signup" id="newsletter-signup"></div>

   45 :                 <div class="field disabled"><input type="submit"
name="submit" id="newsletter-submit" value="Submit"></div>

   46 :             </form>

   47 :             <a id="newsletter-signup-button" href="#"
onclick="$('#newsletter-submit').click(); return false;">Sign Up</a>

   48 :         </div>

   49 :     </div>

   50 : </div>

   51 : <div id="nav">

   52 :     {% if not is_school %}

   53 :         <ul class="frame group">

   54 :              {% for page in pages %} 

   55 :                 {% pages_menu page %}

   56 :             {% endfor %}

   57 :         </ul>

   58 :     {% endif %}

   59 :     {% if is_school %}

   60 :         <ul class="frame group">

   61 :             <li{% ifequal request.path_info '/school/' %}
class="active"{% endifequal %}><a href="/school/">Home</a></li>

   62 :             <li{% ifequal request.path_info '/school/about/' %}
class="active"{% endifequal %}><a href="/school/about/">About</a></li>

   63 :             <li{% ifequal request.path_info '/school/classes/' %}
class="active"{% endifequal %}><a href="/school/classes/">Classes</a></li>

   64 :             <li{% ifequal request.path_info '/school/gallery/' %}
class="active"{% endifequal %}>

Traceback:
File "/usr/lib/python2.5/site-packages/django/core/handlers/base.py" in
get_response
  92.                 response = callback(request, *callback_args,
**callback_kwargs)
File "/Users/Nick/Code Dumbwaiter/garthfagan/../garthfagan/views.py" in photos
  33.     return render_to_response('photos.html', locals(),
context_instance=RequestContext(request))
File "/usr/lib/python2.5/site-packages/django/shortcuts/__init__.py" in
render_to_response
  20.     return HttpResponse(loader.render_to_string(*args, **kwargs),
**httpresponse_kwargs)
File "/usr/lib/python2.5/site-packages/django/template/loader.py" in
render_to_string
  108.     return t.render(context_instance)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  178.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  779.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in
render
  97.         return compiled_parent.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  178.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  779.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/Users/Nick/Code
Dumbwaiter/garthfagan/../garthfagan/utils/templatetags/smart_if.py" in render
  298.             return self.nodelist_true.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  779.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  81.             raise wrapped

Exception Type: TemplateSyntaxError at /gallery/photos/
Exception Value: Caught an exception while rendering: 'lang'

Original Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/django/template/debug.py", line
71, in render_node
    result = node.render(context)
  File "/usr/lib/python2.5/site-packages/django/template/defaulttags.py",
line 155, in render
    nodelist.append(node.render(context))
  File "/usr/lib/python2.5/site-packages/django/template/__init__.py", line
936, in render
    dict = func(*args)
  File
"/Library/Python/2.5/site-packages/pages/templatetags/pages_tags.py", line
59, in pages_menu
    lang = context['lang']
  File "/usr/lib/python2.5/site-packages/django/template/context.py", line
44, in __getitem__
    raise KeyError(key)
KeyError: 'lang'

Original issue reported on code.google.com by intellin...@gmail.com on 12 Aug 2009 at 3:23

[GoogleCodeExporter]

The lang variable is supposed to be present in the context. I made some changes 
so
it's not necessary in the revision 636.

Original comment by batiste....@gmail.com on 13 Aug 2009 at 4:36

• Changed state: Fixed

[GoogleCodeExporter]

Thanks for your speedy response!

Updated to latest rev, now getting "Caught an exception while rendering: 
'path'".

Traceback:

Environment:

Request Method: GET
Request URL: http://localhost:8000/gallery/photos/
Django Version: 1.1 SVN-11450
Python Version: 2.5.1
Installed Applications:
['django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.sites',
 'django.contrib.admin',
 'django.contrib.auth',
 'garthfagan.quotes',
 'garthfagan.utils',
 'garthfagan.registrations',
 'pages',
 'mptt',
 'photologue',
 'tagging',
 'django_extensions']
Installed Middleware:
('django.middleware.common.CommonMiddleware',
 'django.contrib.sessions.middleware.SessionMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.middleware.doc.XViewMiddleware',
 'django.middleware.locale.LocaleMiddleware')

Template error:
In template /Users/Nick/Code Dumbwaiter/garthfagan/templates/base.html, error 
at line 56
   Caught an exception while rendering: 'path'
   46 :                 <div class="field"><input type="text"
name="newsletter-signup" id="newsletter-signup"></div>

   47 :                 <div class="field disabled"><input type="submit"
name="submit" id="newsletter-submit" value="Submit"></div>

   48 :             </form>

   49 :             <a id="newsletter-signup-button" href="#"
onclick="$('#newsletter-submit').click(); return false;">Sign Up</a>

   50 :         </div>

   51 :     </div>

   52 : </div>

   53 : <div id="nav">

   54 :     {% if not is_school %}

   55 :         <ul class="frame group">

   56 :              {% for page in pages %} 

   57 :                 {% pages_menu page %}

   58 :             {% endfor %}

   59 :         </ul>

   60 :     {% endif %}

   61 :     {% if is_school %}

   62 :         <ul class="frame group">

   63 :             <li{% ifequal request.path_info '/school/' %} class="active"{%
endifequal %}><a href="/school/">Home</a></li>

   64 :             <li{% ifequal request.path_info '/school/about/' %}
class="active"{% endifequal %}><a href="/school/about/">About</a></li>

   65 :             <li{% ifequal request.path_info '/school/classes/' %}
class="active"{% endifequal %}><a href="/school/classes/">Classes</a></li>

   66 :             <li{% ifequal request.path_info '/school/gallery/' %}
class="active"{% endifequal %}>

Traceback:
File "/usr/lib/python2.5/site-packages/django/core/handlers/base.py" in 
get_response
  92.                 response = callback(request, *callback_args, **callback_kwargs)
File "/Users/Nick/Code Dumbwaiter/garthfagan/../garthfagan/views.py" in photos
  42.     return render_to_response('photos.html', locals(),
context_instance=RequestContext(request))
File "/usr/lib/python2.5/site-packages/django/shortcuts/__init__.py" in
render_to_response
  20.     return HttpResponse(loader.render_to_string(*args, **kwargs),
**httpresponse_kwargs)
File "/usr/lib/python2.5/site-packages/django/template/loader.py" in 
render_to_string
  108.     return t.render(context_instance)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  178.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  779.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/usr/lib/python2.5/site-packages/django/template/loader_tags.py" in render
  97.         return compiled_parent.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  178.         return self.nodelist.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  779.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  71.             result = node.render(context)
File "/Users/Nick/Code
Dumbwaiter/garthfagan/../garthfagan/utils/templatetags/smart_if.py" in render
  298.             return self.nodelist_true.render(context)
File "/usr/lib/python2.5/site-packages/django/template/__init__.py" in render
  779.                 bits.append(self.render_node(node, context))
File "/usr/lib/python2.5/site-packages/django/template/debug.py" in render_node
  81.             raise wrapped

Exception Type: TemplateSyntaxError at /gallery/photos/
Exception Value: Caught an exception while rendering: 'path'

Original Traceback (most recent call last):
  File "/usr/lib/python2.5/site-packages/django/template/debug.py", line 71, in
render_node
    result = node.render(context)
  File "/usr/lib/python2.5/site-packages/django/template/defaulttags.py", line 155,
in render
    nodelist.append(node.render(context))
  File "/usr/lib/python2.5/site-packages/django/template/__init__.py", line 936, in
render
    dict = func(*args)
  File "/Library/Python/2.5/site-packages/pages/templatetags/pages_tags.py", line 60,
in pages_menu
    path = context['path']
  File "/usr/lib/python2.5/site-packages/django/template/context.py", line 44, in
__getitem__
    raise KeyError(key)
KeyError: 'path'

Original comment by intellin...@gmail.com on 14 Aug 2009 at 1:16

[GoogleCodeExporter]

Is this bug fixed with the last revision 640 ?

Original comment by batiste....@gmail.com on 14 Aug 2009 at 1:28

[GoogleCodeExporter]

Perfect! Thanks.

Original comment by intellin...@gmail.com on 14 Aug 2009 at 1:42

[GoogleCodeExporter]

My only critique would be this tag:

{% load_pages %}

Now returns the word "None" to the template.

Original comment by intellin...@gmail.com on 14 Aug 2009 at 1:44

[GoogleCodeExporter]

Should be done in 641

Original comment by batiste....@gmail.com on 14 Aug 2009 at 2:58

[GoogleCodeExporter]

Perfect. Thanks, again.

Original comment by intellin...@gmail.com on 14 Aug 2009 at 4:32