>
>
> # -*- coding: utf-8 -*-
> """
> Contains view's decorators which automates common tasks.
> """
>
> import traceback
>
> from django.shortcuts import render_to_response
> from django.template import RequestContext
>
> from common.http import HttpResponseJson
>
> def render_to(template):
>     """
>     Render view's output with ``template`` using ``RequestContext``.
>
>     If decorated view returns dict object then wrap it in RequestContext 
> and
>     render the template.
>
>     If decorated view returns non dict object then just return this object.
>
>     Args:
>         :template: path to template
>     
>     Example::
>
>         @render_to('blog/index.html')
>         def post_list(request):
>             posts = Post.objects.all()
>             return {'posts': posts,
>                     }
>     """
>
>     def decorator(func):
>         def wrapper(request, *args, **kwargs):
>             output = func(request, *args, **kwargs)
>             if not isinstance(output, dict):
>                 return output
>             else:
>                 ctx = RequestContext(request)
>                 return render_to_response(template, output, 
> context_instance=ctx)
>         return wrapper
>     return decorator
>
>
> def ajax(func):
>     """
>     Convert views's output into JSON.
>
>     Decorated view should return dict object.
>
>     If ``request.method`` is not ``POST`` then deny the request.
>
>     If view raises Exception then return JSON message with error 
> description.
>     """
>
>     def wrapper(request, *args, **kwargs):
>         if request.method == 'POST':
>             try:
>                 response = func(request, *args, **kwargs)
>             except Exception, ex:
>                 response = {'error': traceback.format_exc()}
>         else:
>             response = {'error': {'type': 403, 'message': 'Accepts only 
> POST request'}}
>         if isinstance(response, dict):
>             return HttpResponseJson(response)
>         else:
>             return response
>     return wrapper
>
>
> def ajax_get(func):
>     """
>     Convert views's output into JSON.
>
>     Decorated view should return dict object.
>
>     If view raises Exception then return JSON message with error 
> description.
>     """
>
>     def wrapper(request, *args, **kwargs):
>         try:
>             response = func(request, *args, **kwargs)
>         except Exception, ex:
>             response = {'error': traceback.format_exc()}
>         if isinstance(response, dict):
>             return HttpResponseJson(response)
>         else:
>             return response
>     return wrapper
>
>
> def disable_cache(func):
>     def decorated(*args, **kwargs):
>         resp = func(*args, **kwargs)
>         resp['Pragma'] = 'no-cache'
>         resp['Expires'] = '0'
>         resp['Cache-Control'] = 'no-cache, no-store, must-revalidate'
>         return resp
>     return decorated
>  
>
Error is 
line 61
    except Exception, ex:
                    ^
SyntaxError: invalid syntax 

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