<%- model_class = Project -%>
<table class="table table-striped">
  <thead>
    <tr>
      <th><%= model_class.human_attribute_name(:owner_id) %></th>
      <th><%= model_class.human_attribute_name(:name) %></th>
      <th><%=t '.actions', :default => t("helpers.actions") %></th>
    </tr>
  </thead>
  <tbody>
    <% @projects.each do |project| %>
      <tr>
        <td><%= project.owner.email %></td>
        <td><%= link_to project.name, project_path(project) %></td>
        <td>
          <%= link_to t('.edit', :default => t("helpers.links.edit")),
                      edit_project_path(project), :class => 'btn btn-default btn-xs' %>
          <%= link_to t('.destroy', :default => t("helpers.links.destroy")),
                      project_path(project),
                      :method => :delete,
                      :data => { :confirm => t('.confirm', :default => t("helpers.links.confirm", :default => 'Are you sure?')) },
                      :class => 'btn btn-xs btn-danger' %>
        </td>
      </tr>
    <% end %>
  </tbody>
</table>

<%- model_class = Project -%>
<table class="table table-striped">
  <thead>
    <tr>
      <th><%= model_class.human_attribute_name(:owner_id) %></th>
      <th><%= model_class.human_attribute_name(:name) %></th>
      <th><%= model_class.human_attribute_name(:closed) %></th>
      <th><%=t '.actions', :default => t("helpers.actions") %></th>
    </tr>
  </thead>
  <tbody>
    <% @projects.each do |project| %>
      <tr>
        <td><%= project.owner.email %></td>
        <td><%= link_to project.name, project_path(project) %></td>
        <td><%= project.closed %></td>
        <td>
          <%= link_to t('.edit', :default => t("helpers.links.edit")),
                      edit_project_path(project), :class => 'btn btn-default btn-xs' %>
          <%= link_to t('.destroy', :default => t("helpers.links.destroy")),
                      project_path(project),
                      :method => :delete,
                      :data => { :confirm => t('.confirm', :default => t("helpers.links.confirm", :default => 'Are you sure?')) },
                      :class => 'btn btn-xs btn-danger' %>
        </td>
      </tr>
    <% end %>
  </tbody>
</table>

Add closed column to projects/table partial view
Add closed column to projects/table partial view
