Fix meta & price & origin_pirce in snapshot

lib/generators/templates/views/share/_merchant_order.json.jbuilder

@@ -4,4 +4,4 @@ json.extract! order, :id, :seq, :address,
   :delivery_way, :delivery_cost, 
   :merchant_remark, :mark, :customer_remark, 
   :status, :status_zh, :meta
-# json.snapshots order.snapshots, partial: 'shotengai/share/snapshot_simple', as: :snapshot
+json.snapshots order.snapshots, partial: 'shotengai/share/snapshot_simple', as: :snapshot

lib/generators/templates/views/share/_order.json.jbuilder

@@ -3,4 +3,4 @@ json.extract! order, :id, :seq, :total_price, :total_original_price,
   :pay_time, :delivery_time, :receipt_time, 
   :delivery_way, :delivery_cost, :customer_remark, 
   :status, :status_zh, :meta
-# json.snapshots order.snapshots, partial: 'shotengai/share/snapshot_simple', as: :snapshot
\ No newline at end of file
+json.snapshots order.snapshots, partial: 'shotengai/share/snapshot_simple', as: :snapshot
\ No newline at end of file

lib/shotengai/series.rb

@@ -68,6 +68,10 @@ module Shotengai
       self.stock.eql?(-1) || self.update!(stock: self.stock - count)
     end
 
+    def original_price
+      read_attribute(:original_price) || price
+    end
+
     private 
       # spec 字段
       def check_spec_value

lib/shotengai/snapshot.rb

@@ -74,11 +74,11 @@ module Shotengai
     # QUESTION: spec 赋值是在 after pay 合理？
     # 支付前 信息 delegate to series
     [:original_price, :price, :spec, :banners, :cover_image, :detail].each do |column|
-      define_method(column) { read_attribute(column) || self.series.read_attribute(column) }
+      define_method(column) { read_attribute(column) || self.series.send(column) }
     end
 
     def meta
-      read_attribute(column) || series.product.meta.merge(series.meta)
+      read_attribute(:meta) || (series.product.meta || {} ).merge(series.meta || {})
     end
 
     # 订单支付后 存储当时信息快照
@@ -91,7 +91,7 @@ module Shotengai
         banners: series.banners,
         cover_image: series.cover_image,
         detail: series.detail,
-        meta: series.product.meta.merge(series.meta)
+        meta: (series.product.meta || {} ).merge(series.meta || {})
       )
     end
 
@@ -99,13 +99,9 @@ module Shotengai
       self.series.cut_stock(self.count)
     end
 
-    def meta
-      read_attribute(:meta) || series.product.meta.merge(series.meta)
-    end
-
     ###### view
     def total_price
-      revised_amount || count * price  
+      revised_amount || count * self.price  
     end
 
     def total_original_price