floof/lib/helpers.py

   1 # -*- coding: utf-8 -*-
   2 """Helper functions
   3
   4 Consists of functions to typically be used within templates, but also
   5 available to Controllers. This module is available to both as 'h'.
   6 """
   7 # Import helpers as desired, or define your own, ie:
   8 # from webhelpers.html.tags import checkbox, password
   9 from webhelpers import *
  10 from routes import url_for, redirect_to
  11 from pylons import url
  12
  13 # Scaffolding helper imports
  14 from webhelpers.html.tags import *
  15 from webhelpers.html import literal
  16 from webhelpers.pylonslib import Flash
  17 import sqlalchemy.types as types
  18 flash = Flash()
  19 # End of.
  20
  21 def get_object_or_404(model, **kw):
  22     from pylons.controllers.util import abort
  23     """
  24     Returns object, or raises a 404 Not Found is object is not in db.
  25     Uses elixir-specific `get_by()` convenience function (see elixir source:
  26     http://elixir.ematia.de/trac/browser/elixir/trunk/elixir/entity.py#L1082)
  27     Example: user = get_object_or_404(model.User, id = 1)
  28     """
  29     obj = model.get_by(**kw)
  30     if obj is None:
  31         abort(404)
  32     return obj
  33
  34 def get_comment_owner_url(**route):
  35     """Given a view route, returns the owner_url route parameter for generating
  36     comment URLs.
  37     """
  38     if 'owner_url' in route:
  39         # We're already in a comments page.  Reuse the existing owner URL
  40         return route['owner_url']
  41
  42     # url() returns URLs beginning with a slash.  We just need to strip it.
  43     return url(**route)[1:]