edit

app/controllers/batch_line_items_controller.rb

@@ -3,7 +3,9 @@ class BatchLineItemsController < ApplicationController
 	skip_before_filter  :verify_authenticity_token 
 	before_action :authenticate_member!
 	def index
-		@batches=Batch.all			 
+		user_id=current_member.user_id
+
+		@batches=Batch.where('user_id=?',user_id)			 
 		@batchLineItems=BatchLineItem.joins('inner join batches on batches.id=batch_line_items.batch_id').select('batch_line_items.*,batches.order_ref as batch_name').page(params[:page]).per(2)
 	end	 
 	def export
@@ -28,6 +30,7 @@ class BatchLineItemsController < ApplicationController
 			end
 			@batchLineItems = BatchLineItem.all.select('serial_no,wristband_code,batch_id,manufacture_uid,card_type')
 		end 
+	 
 		respond_to do |format|	 
 			format.html
 		   	format.csv { send_data @batchLineItems.to_csv(user_id), filename: "encoder-#{Date.today}.csv" }

app/controllers/users_controller.rb

@@ -31,7 +31,7 @@ class UsersController < ApplicationController
     cipher = OpenSSL::Cipher::Cipher.new("aes-256-cbc")
     key=cipher.random_key
     secrect_key= Base64.encode64(key)
-    @user.secrect_key=secrect_key  
+    @user.secrect_key=secrect_key      
 
     respond_to do |format|
       if @user.save

app/models/batch_line_item.rb

@@ -24,12 +24,13 @@ class BatchLineItem < ApplicationRecord
 	    find_lookup=Lookup.find_by_name('generate_serial_no')
 	    if !find_lookup.nil?
 	    	max_value=find_lookup.max_value
-	    	max_value=max_value +1
 	    	prefix=find_lookup.prefix
-	    	max_length=find_lookup.max_length	    	
+	    	max_length=find_lookup.max_length	
+
+	    	max_value=max_value +1	    	
 	    	sufix_len=max_length-prefix.length 
 	    	sufix_str="0" * sufix_len	      
-	    	value_len= max_value.to_s.length	 
+	     	 
 	    	start=0
 	    	ends=sufix_len-value_len-1
 	    	sufix_str= sufix_str[start..ends]
@@ -38,6 +39,13 @@ class BatchLineItem < ApplicationRecord
 
 	    	serial_no=prefix_str.to_s+sufix_str+max_value.to_s	    	
 	    	return serial_no
+	    else
+	    	lookup= Lookup.new
+		  	lookup.name="generate_serial_no"
+		  	lookup.max_value=0
+		  	lookup.prefix='0000'
+		  	lookup.max_length=16
+		  	lookup.save	
 	    end
 	end
 	def self.to_csv(user_id)