Add triggers to the schema

configs/modelling-example.yaml

@@ -18,6 +18,9 @@ models: # list of models for the energy network
     capacity: 1000
   states: 
     initial_soc: 0.5
+  triggers:   # list of triggers for the of another model??. It must be an input, output or state of the model
+    - capacity
+    - soc_min
   scenario_data: 'path/to/file' #path to the scenario data file for the model. This should be optional
 - name: Battery2
   type: BatteryModel # models can reuse the same type

configs/modelling_schema.py

@@ -43,6 +43,7 @@ def validate(self, data, _is_scenario_schema=True): # _is_scenario_schema is a f
                 "outputs": And(dict, len, error="if 'outputs' is used, it must contain at least one key-value pair"),
                 Optional("parameters"): And(dict, len, error="if 'parameters' is used, it must contain at least one key-value pair"),
                 Optional("states"): And(dict, len, error="if 'states' is used, it must contain at least one key-value pair"),
+                Optional("triggers"): And(list, len, error="if 'trigger' is used, it must contain at least one key-value pair"),
                 Optional("scenario_data"): And(str, len, error="you must provide a scenario data file if using 'scenario_data'"),
             } ]
         ),
@@ -64,3 +65,4 @@ def validate(self, data, _is_scenario_schema=True): # _is_scenario_schema is a f
 # Any input, output, or state declared in the connection section must be declared in the models section
 
 # TODO: Write a validator for the scenario data file. It should check that the fiel exists 
+# TODO: write a validator for triggers. It should check that the trigger is a valid input, output, or state.