change stock check report and some structure

app/controllers/inventory/inventory_controller.rb

@@ -1,8 +1,27 @@
 class Inventory::InventoryController < BaseInventoryController
-   load_and_authorize_resource
-   def index
-     @products = InventoryDefinition.all.active.order('created_at desc') 
-   end
+  load_and_authorize_resource
+  def index
+    @inventory_definitions = InventoryDefinition.select("inventory_definitions.*,
+   							(CASE WHEN sj.credit IS NULL THEN '-' ELSE sj.credit END) as credit,
+   							(CASE WHEN sj.debit IS NULL THEN '-' ELSE sj.debit END) as debit,
+   							(CASE WHEN sj.balance IS NULL THEN '-' ELSE sj.balance END) as balance")
+   							.joins(" LEFT JOIN stock_journals sj ON sj.inventory_definition_id=inventory_definitions.id")
+   							.where("(CASE WHEN sj.balance > 0 THEN sj.balance=(SELECT MIN(balance) FROM stock_journals WHERE stock_journals.item_code = inventory_definitions.item_code ORDER BY created_at DESC) ELSE 1 END)")
+   							.group("inventory_definitions.item_code")
+                .order("(CASE WHEN sj.balance > 0 THEN MIN(sj.balance) ELSE NULL END )")
+
+  end
+
+  def show
+    inventory_definition_id = params[:inventory_definition_id]
+    inventory = InventoryDefinition.find(inventory_definition_id)
+
+    @stock_journals = StockJournal.where(item_code: inventory.item_code)
+    respond_to do |format|
+      format.html
+      format.xls
+    end
+  end
 
    	#Shop Name in Navbor
 	helper_method :shop_detail