Make constraints to node functions deferrable

Author: Taucher2003

db/migrate/20260213230904_make_node_function_constraints_deferrable.rb

@@ -0,0 +1,23 @@
+# frozen_string_literal: true
+
+class MakeNodeFunctionConstraintsDeferrable < Code0::ZeroTrack::Database::Migration[1.0]
+  def change
+    remove_foreign_key :reference_values,
+                       :node_functions,
+                       on_delete: :restrict
+
+    add_foreign_key :reference_values,
+                    :node_functions,
+                    deferrable: :deferred
+
+    remove_foreign_key :node_functions,
+                       :node_functions,
+                       column: :next_node_id,
+                       on_delete: :restrict
+
+    add_foreign_key :node_functions,
+                    :node_functions,
+                    column: :next_node_id,
+                    deferrable: :deferred
+  end
+end

db/schema_migrations/20260213230904

@@ -0,0 +1 @@
+501fc65ab83b207de468a27d7e65c82b75fcf7f55def5678bd84e666b16dbd7f

db/structure.sql

@@ -1343,7 +1343,7 @@ ALTER TABLE ONLY node_functions
     ADD CONSTRAINT fk_rails_8615bd0635 FOREIGN KEY (flow_id) REFERENCES flows(id) ON DELETE CASCADE;
 
 ALTER TABLE ONLY reference_values
-    ADD CONSTRAINT fk_rails_8b9d8f68cc FOREIGN KEY (node_function_id) REFERENCES node_functions(id) ON DELETE RESTRICT;
+    ADD CONSTRAINT fk_rails_8b9d8f68cc FOREIGN KEY (node_function_id) REFERENCES node_functions(id) DEFERRABLE INITIALLY DEFERRED;
 
 ALTER TABLE ONLY data_type_identifiers
     ADD CONSTRAINT fk_rails_8d8385e8ec FOREIGN KEY (runtime_id) REFERENCES runtimes(id) ON DELETE CASCADE;
@@ -1415,4 +1415,4 @@ ALTER TABLE ONLY flow_type_settings
     ADD CONSTRAINT fk_rails_f6af7d8edf FOREIGN KEY (flow_type_id) REFERENCES flow_types(id) ON DELETE CASCADE;
 
 ALTER TABLE ONLY node_functions
-    ADD CONSTRAINT fk_rails_fbc91a3407 FOREIGN KEY (next_node_id) REFERENCES node_functions(id) ON DELETE RESTRICT;
+    ADD CONSTRAINT fk_rails_fbc91a3407 FOREIGN KEY (next_node_id) REFERENCES node_functions(id) DEFERRABLE INITIALLY DEFERRED;