add a getter method for a single configuration property.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@31838 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/interfaces/configurable.py

@@ -32,6 +32,10 @@ from zope.interface import Interface
 class IConfigurable(Interface):
   """
   """
+  def getConfigurationProperty(key):
+    """
+    """
+
   def getConfigurationPropertyIdList():
     """
     """

product/ERP5/mixin/configurable.py

@@ -48,6 +48,13 @@ class ConfigurableMixin:
   # Declarative interfaces
   zope.interface.implements(interfaces.IConfigurable,)
 
+  security.declareProtected(Permissions.AccessContentsInformation,
+                            'getConfigurationProperty')
+  def getConfigurationProperty(self, key, default=None):
+    """
+    """
+    return self._getConfigurationPropertyDict().get(key, default)
+
   security.declareProtected(Permissions.AccessContentsInformation,
                             'getConfigurationPropertyIdList')
   def getConfigurationPropertyIdList(self):