Yes, I know this is wrong

monkey-patch.coffee

# See, I need to have handlebars.js load partials from mongodb.
# So I start by monkey patching handlebars `invoke partial` function...
handlebars.VM.original_invokePartial = handlebars.VM.invokePartial
handlebars.VM.invokePartial = (partial, name, context, helpers, partials, data) ->
 # Then I try to find the partial in the DB...
 Partial.findOne { fullpath: name.split '.' }, (err, p) =>
   if p? 
     # ..and I use the loaded partial if it exists
     handlebars.VM.original_invokePartial(p.partial, name, context, helpers, partials, data)
   else 
     # ..or I just let handlebars go about its business if it doesn't exist
     handlebars.VM.original_invokePartial(partial, name, context, helpers, partials, data)

# The problem is that since `invokePartial` is called from deep within handlebars, I have no way to
# make this play nice with node's async model. I either need to make my monkey patch do a blocking DB-operation,
# or I need to do something else. Suggestions appreciated. Thanks.