diff --git a/demo_rails/app/controllers/application_controller.rb b/demo_rails/app/controllers/application_controller.rb
index 0b82e00..e2ab76b 100644
--- a/demo_rails/app/controllers/application_controller.rb
+++ b/demo_rails/app/controllers/application_controller.rb
@@ -282,17 +282,38 @@ def googlecharts
   def datatables
     # need to give name, otherwise generated thead html code will not work.
     # Because no name means no thead  in vector.
-    dv = Daru::Vector.new [:a, :a, :a, :b, :b, :c], name: 'series1'
+    dv = Daru::Vector.new [1, 2, 3, 4, 5, 6], name: 'series1'
+    options = {
+      adapter: :datatables,
+      html_options: {
+        table_options: {
+          table_thead: "<thead>
+                      <tr>
+                        <th></th>
+                        <th>Demo Column Name</th>
+                      </tr>
+                    </thead>",
+          width: '90%'
+        }
+      }
+    }
     # default adapter is nyaplot only
-    @dt_dv = Daru::View::Table.new(dv, pageLength: 3, adapter: :datatables)
-    @dt_dv_html = @dt_dv.div
+    @dt_dv = Daru::View::Table.new(dv, options)
 
     df1 = Daru::DataFrame.new({b: [11,12,13,14,15], a: [1,2,3,4,5],
       c: [11,22,33,44,55]},
       order: [:a, :b, :c],
       index: [:one, :two, :three, :four, :five])
-    @dt_df1 = Daru::View::Table.new(df1, pageLength: 3, adapter: :datatables)
-    @dt_df1_html = @dt_df1.div
+    options2 = {
+      adapter: :datatables,
+      html_options: {
+        table_options: {
+          cellspacing: '0',
+          width: "100%"
+        }
+      }
+    }
+    @dt_df1 = Daru::View::Table.new(df1, options2)
 
     df2 = Daru::DataFrame.new({
       a: [1, 3, 5, 7, 5, 0],
@@ -300,24 +321,9 @@ def datatables
       c: [1, 6, 7, 2, 6, 0]
       }, index: 'a'..'f')
     @dt_df2 = Daru::View::Table.new(df2, pageLength: 3, adapter: :datatables)
-    @dt_df2_html = @dt_df2.div
-    # user can change the table options using following code :
-    #
-    # table_opts = {
-    #   class: "display",
-    #   cellspacing: "0",
-    #   width: "50%",
-    #   table_html: 'new table thead and tbody html code'
-    # }
-    # options = {
-    #     table_options: table_opts
-    # }
-    #
-    # @dt_df2.table.to_html(id='id1', options)
-
-    dv_arr = [:a, :a, :a, :b, :b, :c]
+
+    dv_arr = [1, 2, 3, 4, 5, 6]
     @dt_dv_arr = Daru::View::Table.new(dv_arr, pageLength: 3, adapter: :datatables)
-    @dt_dv_arr_html = @dt_dv_arr.div
 
     df1_arr = [
       [11,12,13,14,15],
@@ -325,7 +331,6 @@ def datatables
       [11,22,33,44,55]
     ]
     @dt_df1_arr = Daru::View::Table.new(df1_arr, pageLength: 3, adapter: :datatables)
-    @dt_df1_arr_html = @dt_df1_arr.div
 
     df2_arr = [
       [1, 3, 5, 7, 5, 0],
@@ -333,8 +338,17 @@ def datatables
       [1, 6, 7, 2, 6, 0]
     ]
     @dt_df2_arr = Daru::View::Table.new(df2_arr, pageLength: 3, adapter: :datatables)
-    @dt_df2_arr_html = @dt_df2_arr.div
 
+    data = []
+    for i in 0..100000
+      data << i
+    end
+    options = {
+      searching: false,
+      pageLength: 7,
+      adapter: :datatables
+    }
+    @table_array_large = Daru::View::Table.new(data, options)
   end
 
 
diff --git a/demo_rails/app/views/application/datatables.erb b/demo_rails/app/views/application/datatables.erb
index b03bb96..0c2af0c 100644
--- a/demo_rails/app/views/application/datatables.erb
+++ b/demo_rails/app/views/application/datatables.erb
@@ -1,12 +1,23 @@
+<h3> Large set of data: </h3>
+<p>
+  <b>Data : </b>
+  A large set of data
+  <br>
+  <b>Table : </b>
+  <br>
+  <div style="width: 500px;"><%=raw @table_array_large.div %></div>
+</p>
+
+<br>
 
 <h3> Daru DataFrame: </h3>
 <p style="color:blue;width: 100px;">
   <b>Data : </b>
-  <%=raw @dt_df2.data.to_html %>
+  <%=raw @dt_df2.data %>
   <br>
   <b>Table : </b>
   <br>
-  <div style="width: 500px;"><%=raw @dt_df2_html %></div>
+  <div style="width: 500px;"><%=raw @dt_df2.div %></div>
 
 </p>
 
@@ -17,11 +28,11 @@
 <h3> Daru DataFrame: </h3>
 <p>
   <b>Data : </b>
-  <%=raw @dt_df1.data.to_html %>
+  <%=raw @dt_df1.data %>
   <br>
   <b>Table : </b>
   <br>
-  <div style="width: 500px;"><%=raw @dt_df1_html %></div>
+  <div style="width: 500px;"><%=raw @dt_df1.div %></div>
 </p>
 
 <br>
@@ -29,11 +40,11 @@
 <h3> Daru Vector: </h3>
 <p>
   <b>Data : </b>
-  <%=raw @dt_dv.data.to_html %>
+  <%=raw @dt_dv.data %>
   <br>
   <b>Table : </b>
   <br>
-  <div style="width: 500px;"><%=raw @dt_dv_html %></div>
+  <div style="width: 500px;"><%=raw @dt_dv.div %></div>
 </p>
 <br>
 
@@ -47,7 +58,7 @@
   <br>
   <b>Table : </b>
   <br>
-  <div style="width: 500px;"><%=raw @dt_df2_arr_html %></div>
+  <div style="width: 500px;"><%=raw @dt_df2_arr.div %></div>
 </p>
 
 
@@ -61,7 +72,7 @@
   <br>
   <b>Table : </b>
   <br>
-  <div style="width: 500px;"><%=raw @dt_df1_arr_html %></div>
+  <div style="width: 500px;"><%=raw @dt_df1_arr.div %></div>
 </p>
 
 <br>
@@ -73,8 +84,7 @@
   <br>
   <b>Table : </b>
   <br>
-  <div style="width: 500px;"><%=raw @dt_dv_arr_html %></div>
+  <div style="width: 500px;"><%=raw @dt_dv_arr.div %></div>
 </p>
-<br>
-
 
+<br>