GatingMechanism: properly set gating_allocation as value alias

psyneulink/core/components/component.py

@@ -3844,21 +3844,14 @@ def _update_parameter_components(self, context=None):
         # store all Components in Parameters to be used in
         # _dependent_components for _initialize_from_context
         for p in self.parameters:
+            param_value = p._get(context)
             try:
-                param_value = p._get(context)
-                try:
-                    param_value = param_value.__self__
-                except AttributeError:
-                    pass
+                param_value = param_value.__self__
+            except AttributeError:
+                pass
 
-                if isinstance(param_value, Component) and param_value is not self:
-                    self._parameter_components.add(param_value)
-            # ControlMechanism and GatingMechanism have Parameters that only
-            # throw these errors
-            except Exception as e:
-                # cannot import the specific exceptions due to circularity
-                if 'attribute is not implemented on' not in str(e):
-                    raise
+            if isinstance(param_value, Component) and param_value is not self:
+                self._parameter_components.add(param_value)
 
     @property
     def _dependent_components(self):

psyneulink/core/components/mechanisms/modulatory/control/gating/gatingmechanism.py

@@ -227,29 +227,6 @@ class GatingMechanismError(Exception):
     def __init__(self, error_value):
         self.error_value = error_value
 
-def _gating_allocation_getter(owning_component=None, context=None):
-    return owning_component.control_allocation
-
-def _gating_allocation_setter(value, owning_component=None, context=None):
-    owning_component.parameters.control_allocation._set(np.array(value), context)
-    return value
-
-# def _control_allocation_getter(owning_component=None, context=None):
-#     from psyneulink.core.components.mechanisms.modulatory.controlmechanism import ControlMechanism
-#     from psyneulink.core.components.ports.modulatorysignals.controlsignal import ControlSignal
-#     raise GatingMechanismError(f"'control_allocation' attribute is not implemented on {owning_component.name};  "
-#                                 f"consider using a {ControlMechanism.__name__} instead, "
-#                                 f"or a {ControlMechanism.__name__} if both {ControlSignal.__name__}s and "
-#                                 f"{GatingSignal.__name__}s are needed.")
-#
-# def _control_allocation_setter(value, owning_component=None, context=None, **kwargs):
-#     from psyneulink.core.components.mechanisms.modulatory.controlmechanism import ControlMechanism
-#     from psyneulink.core.components.ports.modulatorysignals.controlsignal import ControlSignal
-#     raise GatingMechanismError(f"'control_allocation' attribute is not implemented on {owning_component.name};  "
-#                                 f"consider using a {ControlMechanism.__name__} instead, "
-#                                 f"or a {ControlMechanism.__name__} if both {ControlSignal.__name__}s and "
-#                                 f"{GatingSignal.__name__}s are needed.")
-
 
 class GatingMechanism(ControlMechanism):
     """
@@ -430,12 +407,9 @@ class Parameters(ControlMechanism.Parameters):
                     :read only: True
         """
         # This must be a list, as there may be more than one (e.g., one per control_signal)
-        value = Parameter(np.array([defaultGatingAllocation]), aliases='control_allocation', pnl_internal=True)
-        gating_allocation = Parameter(
+        value = Parameter(
             np.array([defaultGatingAllocation]),
-            getter=_gating_allocation_getter,
-            setter=_gating_allocation_setter,
-            read_only=True,
+            aliases=['control_allocation', 'gating_allocation'],
             pnl_internal=True
         )