Merge pull request #770 from code0-tech/fix-value-normalisation

.presence kills empty arrays as values

Author: Taucher2003

app/models/node_parameter.rb

@@ -30,7 +30,7 @@ def to_grpc
   private
 
   def only_one_value_present
-    values = [literal_value.present?, reference_value.present?, function_value.present?]
+    values = [!literal_value.nil?, reference_value.present?, function_value.present?]
     return if values.count(true) == 1
 
     errors.add(:value,

app/services/namespaces/projects/flows/update_service.rb

@@ -176,7 +176,7 @@ def update_node_parameters(t, current_node, current_node_input, all_nodes)
 
             db_parameters[index].runtime_parameter = runtime_parameter
 
-            db_parameters[index].literal_value = parameter.value.literal_value.presence
+            db_parameters[index].literal_value = parameter.value.literal_value
 
             if parameter.value.node_function_id.present?
               node = all_nodes.find { |n| n[:input].id == parameter.value.node_function_id }

spec/requests/graphql/mutation/namespace/projects/flows/update_mutation_spec.rb

@@ -76,7 +76,7 @@
               {
                 runtimeParameterDefinitionId: runtime_function.parameters.first.to_global_id.to_s,
                 value: {
-                  literalValue: 100,
+                  literalValue: [],
                 },
               }
             ] },