apps/debug_toolbar/toolbar/loader.py

   1 """
   2 The main DebugToolbar class that loads and renders the Toolbar.
   3 """
   4 from django.template.loader import render_to_string
   5 from debug_toolbar.settings import DEBUG_TOOLBAR_PANELS
   6
   7 class DebugToolbar(object):
   8
   9     def __init__(self, request):
  10         self.request = request
  11         self.panels = []
  12         self.panel_list = []
  13         self.content_list = []
  14
  15     def load_panels(self):
  16         """
  17         Populate debug panel lists from settings.DEBUG_TOOLBAR_PANELS.
  18         """
  19         from django.conf import settings
  20         from django.core import exceptions
  21
  22         for panel_path in DEBUG_TOOLBAR_PANELS:
  23             try:
  24                 dot = panel_path.rindex('.')
  25             except ValueError:
  26                 raise exceptions.ImproperlyConfigured, '%s isn\'t a debug panel module' % panel_path
  27             panel_module, panel_classname = panel_path[:dot], panel_path[dot+1:]
  28             try:
  29                 mod = __import__(panel_module, {}, {}, [''])
  30             except ImportError, e:
  31                 raise exceptions.ImproperlyConfigured, 'Error importing debug panel %s: "%s"' % (panel_module, e)
  32             try:
  33                 panel_class = getattr(mod, panel_classname)
  34             except AttributeError:
  35                 raise exceptions.ImproperlyConfigured, 'Toolbar Panel module "%s" does not define a "%s" class' % (panel_module, panel_classname)
  36
  37             try:
  38                 panel_instance = panel_class(self.request)
  39             except:
  40                 raise
  41                 continue # Some problem loading panel
  42
  43             self.panels.append(panel_instance)
  44
  45     def render_toolbar(self):
  46         """
  47         Renders the overall Toolbar with panels inside.
  48         """
  49         return render_to_string('debug_toolbar/base.html', {'panels': self.panels})