Add relation to Party and output in Blueprint

app/blueprints/api/v1/party_blueprint.rb

@@ -64,6 +64,8 @@ module Api
         include_view :characters
         include_view :job_skills
 
+        association :accessory,
+                    blueprint: JobAccessoryBlueprint
         fields :description, :charge_attack, :button_count, :turn_count, :chain_count
       end
 

app/models/party.rb

@@ -16,6 +16,11 @@ class Party < ApplicationRecord
   belongs_to :raid, optional: true
   belongs_to :job, optional: true
 
+  belongs_to :accessory,
+             foreign_key: 'accessory_id',
+             class_name: 'JobAccessory',
+             optional: true
+  
   belongs_to :skill0,
              foreign_key: 'skill0_id',
              class_name: 'JobSkill',