Separate the snapshot own meta from the meta come from its product and series

lib/generators/templates/spec/requests/customer/order_spec.rb

@@ -211,6 +211,7 @@ RSpec.describe "#{namespace}/orders", type: :request, capture_examples: true, ta
               meta: { type: :object },
               incr_snapshot_ids: { type: :array },
             },
+          }
           snapshot: {
             type: :object, properties: {
               shotengai_series_id: { type: :integer },
@@ -219,7 +220,6 @@ RSpec.describe "#{namespace}/orders", type: :request, capture_examples: true, ta
           }
         }
       }
-      }
 
       response(201, description: 'successful') do
         let(:order_and_snapshot_params) {

lib/shotengai/json_column.rb

@@ -16,8 +16,6 @@ module Shotengai
             define_method("#{column}_input=") do |val|
               parsed_val = val && val.map{ |h| { (h[:key] || h['key']) => (h[:val] || h['val']) } }.reduce(&:merge)
               self.#{column} = parsed_val
-
-# self.assign_attributes('#{column}' => parsed_val)
             end
 
             define_method("#{column}_output") do

lib/shotengai/snapshot.rb

@@ -80,8 +80,21 @@ module Shotengai
       define_method(column) { read_attribute(column) || self.series.send(column) }
     end
 
+
+    def full_meta
+      read_attribute(:meta) || {}
+    end
+
+    def full_meta= val
+      write_attribute(:meta, val)
+    end
+
     def meta
-      read_attribute(:meta) || (series.product.meta || {} ).merge(series.meta || {})
+      full_meta['snapshot'] || {}
+    end
+
+    def meta= val
+      self.full_meta = full_meta.merge('snapshot' => val)
     end
 
     def already_disable
@@ -111,7 +124,11 @@ module Shotengai
         banners: series.banners,
         cover_image: series.cover_image,
         detail: series.detail,
-        meta: (product.meta || {} ).merge(series.meta || {})
+        full_meta: { 
+          product: product.meta,
+          series: series.meta, 
+          snapshot: meta,
+        }
       )
     end
 
@@ -138,12 +155,6 @@ module Shotengai
     def order_status; shotengai_order&.status end
     def order_status_zh; shotengai_order&.status_zh end
 
-    ######
-    
-    def meta
-      super || {}
-    end
-
     private 
       # spec 字段
       def check_spec