erp5_json_form: support argument mappings

bt5/erp5_json_form/ModuleComponentTemplateItem/portal_components/document.erp5.JSONForm.py

@@ -69,10 +69,33 @@ class JSONForm(JSONType, TextDocument):
         raise jsonschema.exceptions.ValidationError(validation_result.message)
       else:
         raise ValueError(json.dumps(validation_result))
+
+    data_dict = json.loads(json_data)
     if self.getAfterMethodId():
-      return getattr(getattr(self, "aq_parent", None), self.getAfterMethodId())(json_data, self)
+      after_method = getattr(getattr(self, "aq_parent", None), self.getAfterMethodId())
+      mapped_data_dict = self._mapArguments(data_dict, "input")
+      # XXX: argument name is wrong
+      mapped_data_dict["form_reference"] = self
+      output_dict = after_method(**mapped_data_dict)
+      if not isinstance(output_dict, dict):
+        output_dict = {}
+      mapped_output_dict = self._mapArguments(output_dict, "output")
+      return json.dumps(mapped_output_dict)
+
     return "Nothing to do"
 
+  def _mapArguments(self, arguments, mapping_type):
+    mappings = {x.getSource(): x.getDestination() for x in self.objectValues(portal_type="Argument Mapping")  if x.getMappingType() == mapping_type}
+    mapped_arguments = {}
+
+    for (k, v) in arguments.iteritems():
+      if k in mappings:
+        mapped_arguments[mappings[k]] = v
+      else:
+        mapped_arguments[k] = v
+
+    return mapped_arguments
+
   def validateJSON(self, json_data, list_error=False):
     """
     Validate contained JSON with the Schema defined in the Portal Type.