update for order process

Add activereocrd-import gem for bulk insert

app/models/order_item.rb

@@ -5,8 +5,8 @@ class OrderItem < ApplicationRecord
   before_create :generate_custom_id
 
   #Associations
-   belongs_to :order, autosave: true
-   # belongs_to :order, counter_cache: true
+  belongs_to :order, autosave: true
+  # belongs_to :order, counter_cache: true
 
   #Validation
   validates_presence_of :item_code, :item_name, :qty
@@ -102,7 +102,13 @@ class OrderItem < ApplicationRecord
     end
   end
 
+  protected
+  def self.generate_ids(count = 1)
+    SeedGenerator.generate_ids(self.name, "ODI", count)
+  end
+
   private
+
   def generate_custom_id
     if self.order_items_id.nil?
       self.order_items_id = SeedGenerator.generate_id(self.class.name, "ODI")