The view part to display the messages.

messages_view_part.html.erb

<h1>Messages</h1>

<!-- Todays messages -->

<% if @grouped_messages.present? && @grouped_messages[true].present? %>
  <h3> Today </h3>
  <% @grouped_messages[true].each do |msg| %>
    <%= msg.content %>
    <%= msg.created_at.strftime('%I:%M %p') %> 
    <br />
  <% end %> 
  <br />
<% end %>


<!-- Month wise grouped messages -->

<% if @month_wise_sorted_alerts.present? %>
  <% @month_wise_sorted_alerts.each do |hash_elements|%>
  <h3> <%= Date::MONTHNAMES[hash_elements.first] %> </h3>
  <% hash_elements.last.each do |msg| %>
    <%= msg.content %>
    <%= msg.created_at.strftime('%b %d') %> 
    <br />
  <% end %> 
  <br />
  <% end %>
<% end %>