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Enforce that required attributes can't be set to None in CRUD Update

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The `required` parameter attribute didn't distinguish between cases
where the parameter is not given and all, and where the parameter is
given but empty. The case of updating a required attribute couldn't
be validated properly, because when it is given but empty, validators
don't run.
This patch introduces a new flag, 'nonempty', that specifies the
parameter can be missing (if not required), but it can't be None.
This flag gets added automatically to required parameters in CRUD
Update.
This commit is contained in:
Petr Viktorin
2012-02-16 07:11:56 -05:00
committed by Martin Kosek
parent 1dc11a01d7
commit 7cfc16ca58
3 changed files with 17 additions and 7 deletions
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9
ipalib/parameters.py
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@@ -558,9 +558,9 @@ class Param(ReadOnly):
else:
value = self.convert(self.normalize(value))
if hasattr(self, 'env'):
self.validate(value, self.env.context) #pylint: disable=E1101
self.validate(value, self.env.context, supplied=self.name in kw) #pylint: disable=E1101
else:
self.validate(value)
self.validate(value, supplied=self.name in kw)
return value
def kw(self):
@@ -820,15 +820,16 @@ class Param(ReadOnly):
error=ugettext(self.type_error),
)
def validate(self, value, context=None):
def validate(self, value, context=None, supplied=None):
"""
Check validity of ``value``.
:param value: A proposed value for this parameter.
:param context: The context we are running in.
:param supplied: True if this parameter was supplied explicitly.
"""
if value is None:
if self.required:
if self.required or (supplied and 'nonempty' in self.flags):
if context == 'cli':
raise RequirementError(name=self.cli_name)
else: