On Fri, 2011-01-28 at 16:13 -0800, oO wrote:
> I though I'd share some of the things I'm discovering as I'm
> attempting to write a MongoDB+Pyramid application. I'm implementing a
> traversal based system, which may or may not be the right approach,
> but at least it forced me to start with the default pyramid_starter
> template which doesn't have dependencies on ZODB or SQLAlchemy as a
> startinging point.
>
> Documentation is a bit lacking on the whole custom renderer thing,
> specially with what renderers are supposed to be doing. At first I
> thought I would have to be creating and using a Response object, but
> it doesn't seem it's the case.
>
> In my __init__.py file
>
> ...
> #Create the application configurator
> config = Configurator(root_factory=get_root, settings=settings)
> # Add custom renderers
> config.add_renderer('mongo_json',
> 'pyramidtest.renderers.MongoJSONRenderer')
> # Add views
> config.add_view('pyramidtest.views.json_view', name='',
> renderer='mongo_json')
> ...
>
> created a new renderers.py file
>
> import json
> from pymongo import json_util
>
> class MongoJSONRenderer:
> def __init__(self, info):
> """ Constructor: info will be an object having the the
> following attributes: name (the renderer name), package
> (the package that was 'current' at the time the
> renderer was registered), type (the renderer type
> name), registry (the current application registry) and
> settings (the deployment settings dictionary). """
>
>
> def __call__(self, value, system):
> """ Call a the renderer implementation with the value
> and the system value passed in as arguments and return
> the result (a string or unicode object). The value is
> the return value of a view. The system value is a
> dictionary containing available system values
> (e.g. view, context, and request). """
> request = system.get('request')
> if request is not None:
> if not hasattr(request, 'response_content_type'):
> request.response_content_type =
> 'application/json'
> return json.dumps(value, default=json_util.default)
>
>
> Is this right? it seems to work, but I'm not sure it's the best way to
> implement that.
That looks fine.
- C
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