auction.utils.loader: 53 total statements, 32.0% covered

Generated: Mon 2013-04-29 18:13 CST

Source file: /home/slam/workspace/django-auction/auction/utils/loader.py

Stats: 16 executed, 34 missed, 3 excluded, 44 ignored

1. #-*- coding: utf-8 -*-
2. """
3. These utils are ripped directly from Django-Shop.
4. """
6. from django.conf import settings
7. from django.core import exceptions
8. from django.utils.importlib import import_module
11. CLASS_PATH_ERROR = 'django-auction is unable to interpret settings value for %s. '\
12. '%s should be in the form of a tupple: '\
13. '(\'path.to.models.Class\', \'app_label\').'
16. def load_class(class_path, setting_name=None):
17. """
18. Loads a class given a class_path. The setting value may be a string or a
19. tuple.
21. The setting_name parameter is only there for pretty error output, and
22. therefore is optional
23. """
24. if not isinstance(class_path, basestring):
25. try:
26. class_path, app_label = class_path
27. except:
28. if setting_name:
29. raise exceptions.ImproperlyConfigured(CLASS_PATH_ERROR % (
30. setting_name, setting_name))
31. else:
32. raise exceptions.ImproperlyConfigured(CLASS_PATH_ERROR % (
33. 'this setting', 'It'))
35. try:
36. class_module, class_name = class_path.rsplit('.', 1)
37. except ValueError:
38. if setting_name:
39. txt = '%s isn\'t a valid module. Check your %s setting' % (
40. class_path, setting_name)
41. else:
42. txt = '%s isn\'t a valid module.' % class_path
43. raise exceptions.ImproperlyConfigured(txt)
45. try:
46. mod = import_module(class_module)
47. except ImportError, e:
48. if setting_name:
49. txt = 'Error importing backend %s: "%s". Check your %s setting' % (
50. class_module, e, setting_name)
51. else:
52. txt = 'Error importing backend %s: "%s".' % (class_module, e)
53. raise exceptions.ImproperlyConfigured(txt)
55. try:
56. clazz = getattr(mod, class_name)
57. except AttributeError:
58. if setting_name:
59. txt = ('Backend module "%s" does not define a "%s" class. Check'
60. ' your %s setting' % (class_module, class_name,
61. setting_name))
62. else:
63. txt = 'Backend module "%s" does not define a "%s" class.' % (
64. class_module, class_name)
65. raise exceptions.ImproperlyConfigured(txt)
66. return clazz
69. def get_model_string(model_name):
70. """
71. Returns the model string notation Django uses for lazily loaded ForeignKeys
72. (eg 'auth.User') to prevent circular imports.
74. This is needed to allow our crazy custom model usage.
75. """
76. setting_name = 'AUCTION_%s_MODEL' % model_name.upper().replace('_', '')
77. class_path = getattr(settings, setting_name, None)
79. if not class_path:
80. return 'auction.%s' % model_name
81. elif isinstance(class_path, basestring):
82. parts = class_path.split('.')
83. try:
84. index = parts.index('models') - 1
85. except ValueError, e:
86. raise exceptions.ImproperlyConfigured(CLASS_PATH_ERROR % (
87. setting_name, setting_name))
88. app_label, model_name = parts[index], parts[-1]
89. else:
90. try:
91. class_path, app_label = class_path
92. model_name = class_path.split('.')[-1]
93. except:
94. raise exceptions.ImproperlyConfigured(CLASS_PATH_ERROR % (
95. setting_name, setting_name))
97. return '%s.%s' % (app_label, model_name)