fixed inventory

app/models/order_item.rb

@@ -13,6 +13,15 @@ class OrderItem < ApplicationRecord
   # validates :qty, numericality: { :greater_than => 0 }
   validates_associated :order
 
+  after_save :update_stock_journal
+
+  # after_update :update_stock_journal
+
+  # after_save :add_to_journal, if: Proc.new { !self.id_changed? }
+  # after_save :update_stock_journal, if: Proc.new { self.id_changed? }
+
+
+
   #This Method - handle how items is added into order
   # order_item : {
   #     order_item_code : "",
@@ -101,4 +110,49 @@ class OrderItem < ApplicationRecord
       self.order_items_id = SeedGenerator.generate_id(self.class.name, "ODI")
     end
   end
+
+  def add_to_journal
+    defination = InventoryDefinition.find_by_item_code(self.item_instance_code)
+    stock = StockJournal.where('item_code = ?', self.item_instance_code).order("id DESC").first
+    journal = StockJournal.create(
+      item_code: self.item_instance_code,
+      credit: 0,
+      debit: self.qty,
+      balance: stock.balance - self.qty,
+      inventory_definition_id: defination.id,
+      remark: 'ok',
+      trans_ref: self.order.id,
+      trans_type: StockJournal::SALES_TRANS
+    )
+  end
+
+  def update_stock_journal
+    if self.qty != self.qty_was
+      found, inventory_definition = InventoryDefinition.find_product_in_inventory(self)
+      if found
+        InventoryDefinition.check_balance(self, inventory_definition)
+      end
+    end
+  #   if self.qty > self.qty_was
+  #     credit = 0
+  #     debit = self.qty.to_i - self.qty_was.to_i
+  #   else
+  #     credit = self.qty_was.to_i - self.qty.to_i
+  #     debit = 0
+  #   end
+  #   if credit != debit
+  #     defination = InventoryDefinition.find_by_item_code(self.item_instance_code)
+  #     stock = StockJournal.where('item_code = ?', self.item_instance_code).order("id DESC").first
+  #     journal = StockJournal.create(
+  #       item_code: self.item_instance_code,
+  #       credit: credit,
+  #       debit: debit,
+  #       balance: stock.balance - debit + credit,
+  #       inventory_definition_id: defination.id,
+  #       remark: 'ok',
+  #       trans_ref: self.order.id,
+  #       trans_type: StockJournal::SALES_TRANS
+  #     )
+  #   end
+  end
 end