_main_content.html.erb

<div id="main-content" class="col-sm-9">
  <h3 class="page-name"><%= link_to 'Hobby', hobby_posts_path %></h3>
  <div class="row">
    <%= render @hobby_posts %>
    <%= render no_posts_partial_path(@hobby_posts) %>
  </div><!-- row -->

  <h3 class="page-name"><%= link_to 'Study', study_posts_path %></h3>
  <div class="row">
    <%= render @study_posts %>
    <%= render no_posts_partial_path(@study_posts) %>
  </div><!-- row -->

  <h3 class="page-name"><%= link_to 'Team member', team_posts_path %></h3>
  <div class="row">
    <%= render @team_posts %>
    <%= render no_posts_partial_path(@team_posts) %>
  </div><!-- row -->
</div><!-- main_content -->