Tweaked nodeview error reraising to preserve traceback information.

[philo.git] / validators.py

diff --git a/validators.py b/validators.py
index 1e73c0b..e4c32d0 100644 (file)
--- a/validators.py
+++ b/validators.py
@@ -1,85 +1,10 @@
-from django.core.exceptions import ValidationError
 from django.utils.translation import ugettext_lazy as _
 from django.core.validators import RegexValidator
+from django.core.exceptions import ValidationError
+from django.utils import simplejson as json
 import re
 
 
-class TreeParentValidator(object):
-       """
-       constructor takes instance and parent_attr, where instance is the model
-       being validated and parent_attr is where to look on that parent for the
-       comparison.
-       """
-       #message = _("A tree element can't be its own parent.")
-       code = 'invalid'
-       
-       def __init__(self, instance, parent_attr=None, message=None, code=None):
-               self.instance = instance
-               self.parent_attr = parent_attr
-               self.static_message = message
-               if code is not None:
-                       self.code = code
-       
-       def __call__(self, value):
-               """
-               Validates that the self.instance is not found in the parent tree of
-               the node given as value.
-               """
-               parent = value
-               
-               while parent:
-                       comparison=self.get_comparison(parent)
-                       if comparison == self.instance:
-                               # using (self.message, code=self.code) results in the admin interface
-                               # screwing with the error message and making it be 'Enter a valid value'
-                               raise ValidationError(self.message)
-                       parent=parent.parent
-       
-       def get_comparison(self, parent):
-               if self.parent_attr and hasattr(parent, self.parent_attr):
-                       return getattr(parent, self.parent_attr)
-               
-               return parent
-       
-       def get_message(self):
-               return self.static_message or _(u"A %s can't be its own parent." % self.instance.__class__.__name__)
-       message = property(get_message)
-       
-       
-class TreePositionValidator(object):
-       code = 'invalid'
-       
-       def __init__(self, parent, slug, obj_class, message=None, code=None):
-               self.parent = parent
-               self.slug = slug
-               self.obj_class = obj_class
-               self.static_message = message
-                       
-               if code is not None:
-                       self.code = code
-       
-       def __call__(self, value):
-               """
-               Validates that there is no obj of obj_class with the same position
-               as the compared obj (value) but a different id.
-               """
-               if not isinstance(value, self.obj_class):
-                       raise ValidationError(_(u"The value must be an instance of %s." % self.obj_class.__name__))
-               
-               try:
-                       obj = self.obj_class.objects.get(slug=self.slug, parent=self.parent)
-                       
-                       if obj.id != value.id:
-                               raise ValidationError(self.message)
-                               
-               except self.obj_class.DoesNotExist:
-                       pass
-       
-       def get_message(self):
-               return self.static_message or _(u"A %s with that path (parent and slug) already exists." % self.obj_class.__name__)
-       message = property(get_message)
-
-
 class RedirectValidator(RegexValidator):
        """Based loosely on the URLValidator, but no option to verify_exists"""
        regex = re.compile(
@@ -105,3 +30,10 @@ class URLLinkValidator(RegexValidator):
                r'|)' # also allow internal links
                r'(?:/?|[/?#]?\S+)$', re.IGNORECASE)
        message = _(u'Enter a valid absolute or relative redirect target')
+
+
+def json_validator(value):
+       try:
+               json.loads(value)
+       except:
+               raise ValidationError(u'\'%s\' is not valid JSON' % value)
\ No newline at end of file