ZSQLCatalog.SQLCatalog: Ignore unknown columns in getParams() instead (c6d26af5).

Selection.__call__() calls getParams() and as getParams() can be called
directly from many places (such as SelectionTool.getSelectionParamsFor()),
it makes more sense to have it here.

product/ERP5Form/Selection.py

@@ -206,11 +206,7 @@ class Selection(Acquisition.Implicit, Traversable, Persistent):
         #LOG("Selection", 0, str((self.__dict__)))
         #LOG("Selection", 0, str(method))
         #LOG('Selection', 0, "self.invert_mode = %s" % repr(self.invert_mode))
-        if not params:
-          kw = self.params.copy()
-        else:
-          kw = params.copy()
-        kw.setdefault("ignore_unknown_columns", True)
+        kw = self.getParams()
         # Always remove '-C'-named parameter.
         kw.pop('-C', None)
         if self.invert_mode is not 0:
@@ -280,7 +276,10 @@ class Selection(Acquisition.Implicit, Traversable, Persistent):
         """
         if not isinstance(self.params, dict):
           self.params = {}
-        return self.params.copy()
+
+        params = self.params.copy()
+        params.setdefault("ignore_unknown_columns", True)
+        return params
 
     security.declarePublic('getSortOrder')
     def getSortOrder(self):