app/views/projects/confirm_deletion.html.erb
<%= form_tag url_for( {:action => 'destroy', :controller => 'projects', :id => @project.id}), {:method => 'delete', :class=>'simple_form'} do %>
<h3><%= "#{@project.title}-#{@project.version} " %></h3>
<div class="confirm_deletion">
<%= hidden_field_tag 'from_tree_history_view', @from_tree_history_view %>
<%= hidden_field_tag 'current_showed_project_id', @current_showed_project_id %>
<% if @project.is_model %>
<%= I18n.t('text_confirm_estimation_model_deletion') %>
<% else %>
<%= I18n.t('text_confirm_project_deletion') %>
<% end %>
<br /><br />
<div class="actions">
<span style="margin-right: 10px;"> <%= check_box_tag "yes_confirmation", 'selected' %> <%= I18n.t('simple_form.yes') %></span>
<%= submit_tag I18n.t('delete'), :class => 'btn', :id => 'yes_delete_project' %>
<%= submit_tag I18n.t('cancel'), :class => 'btn', :id => 'cancel_project_deletion' %>
</div>
</div>
<% end %>