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-rw-r--r--ipalib/frontend.py11
1 files changed, 8 insertions, 3 deletions
diff --git a/ipalib/frontend.py b/ipalib/frontend.py
index d53a7d4d..7d75fa17 100644
--- a/ipalib/frontend.py
+++ b/ipalib/frontend.py
@@ -106,6 +106,8 @@ class Param(plugable.ReadOnly):
lock(self)
def __dispatch(self, value, scalar):
+ if value is None:
+ return None
if self.multivalue:
if type(value) in (tuple, list):
if len(value) == 0:
@@ -146,7 +148,7 @@ class Param(plugable.ReadOnly):
def __convert_scalar(self, value, index=None):
if value is None:
- raise TypeError('value cannot be None')
+ return None
converted = self.type(value)
if converted is None:
raise errors.ConversionError(
@@ -155,9 +157,12 @@ class Param(plugable.ReadOnly):
return converted
def convert(self, value):
- return self.__dispatch(value, self.__convert_scalar)
-
+ """
+ Convert/coerce ``value`` to Python type for this parameter.
+ :param value: A proposed value for this parameter.
+ """
+ return self.__dispatch(value, self.__convert_scalar)
def __validate_scalar(self, value, index=None):
if type(value) is not self.type.type: