Redmine

    trackers = trackers_for_select(issue)

    trackers.collect {|t| [t.name, t.id]}

  end

  def trackers_for_select(issue)

    trackers

    'project_ids',

    'description'

<p>

  <%= f.select :tracker_id, trackers_options_for_select(@issue), {:required => true},

                :onchange => "updateIssueFrom('#{escape_javascript update_issue_form_path(@project, @issue)}', this)" %>

    <a class="icon icon-help" href="#" id="display_tracker_description">

      <%=h l(:label_description_for_trackers, default: 'Descriptions for trackers') %>

    </a>

</p>

<%= render partial: 'issues/tracker_description', locals: { trackers: trackers_for_select(@issue) } %>

<!-- dialog box -->

<div id="trackers_description_dialog" style="overflow:visible; display: none;">

  <h3 class="title"><%= l(:label_description_for_trackers, default: 'Descriptions for trackers') %></h3>

  <table class="list trackers odd-even">

    <thead>

    <th><%= l(:field_description) %></th>

    <th><%= l(:button_apply) %></th>

    </thead>

    <tbody>

    <% trackers.each do |tracker| %>

        <tr class="<%= cycle("odd", "even") %>" name="<%= tracker['id'] %>">

          <td class="description">

            <h4><%= tracker['name'] %></h4>

            <%= textilizable(tracker['description']) %>

          </td>

          <td>

            <a href="#" class="icon icon-test" title="<%= l(:button_apply) %>"

               onclick="applyTracker(<%= tracker['id'] %>, false); return false;"></a>

          </td>

        </tr>

    <% end %>

    </tbody>

  </table>

</div>

<!-- dialog box -->

<script type="text/javascript">

    //<![CDATA[

    $(document).ready(function () {

        $("#display_tracker_description").click(function (e) {

            e.preventDefault();

            showModal('trackers_description_dialog', '500px');

            var selected_tracker_id = $('#issue_tracker_id').val();

            updateSelect(selected_tracker_id);

        });

    });

    function applyTracker(id) {

        var target = $('#issue_tracker_id');

        target.attr("selected", false);

        target.find('option[value="' + id + '"]').prop('selected', true);

        target.trigger('change');

        updateSelect(id);

    }

    function updateSelect(id) {

        var target = $("tr[name='" + id + "'] td h4");

        $('td h4').not(target).removeClass('selected');

        $(target).addClass('selected');

    }

</script>

      <div class="tooltip_wrapper">

        <%= check_box_tag 'project[tracker_ids][]', tracker.id, @project.trackers.to_a.include?(tracker), :id => nil %>

        <%= tracker %>

        <div class="tooltip_body">

          <p class="tooltip_title"><%= tracker.name %></p>

          <%= tracker.description %>

        </div>

      </div>

            <div class="tooltip_wrapper">

              <%= link_to tracker.name, project_issues_path(@project, :set_filter => 1, :tracker_id => tracker.id ) %>

              <div class="tooltip_body">

                <p class="tooltip_title"><%= tracker.name %></p>

                <%= tracker.description %>

              </div>

            </div>

<p><%= f.text_area :description, :rows => 4 %></p>

  <td class="name">

    <div class="tooltip_wrapper">

      <%= link_to tracker.name, edit_tracker_path(tracker) %>

      <div class="tooltip_body">

        <p class="tooltip_title"><%= tracker.name %></p>

        <%= tracker.description %>

      </div>

    </div>

  </td>

class AddTrackersDescription < ActiveRecord::Migration

  def self.up

    add_column :trackers, :description, :string

  end

  def self.down

    remove_column :trackers, :description

  end

end

/*--- Tooltip: Use to display template description -----*/

.tooltip_wrapper {

  color: #555;

  display: inline-block;

}

/* Hide tooltip body */

.tooltip_wrapper .tooltip_body {

  display: none;

}

.tooltip_body .tooltip_title {

  color: #979797;

  font-weight: bold;

  font-style: italic;

  border-bottom: 1px solid #e4e4e4;

  padding: 3px 0 3px 0;

  margin-bottom: 4px;

}

/* Mouse over action */

.tooltip_wrapper:hover {

  position: relative;

  color: #333;

}

/* tooltip body */

.tooltip_wrapper:hover .tooltip_body {

  text-align: left;

  display: block;

  position: absolute;

  left: 60px;

  top: 120%;

  font-size: 90%;

  background-color: #ffffff;

  width: 260px;

  padding: 8px 10px 12px;

  border: 1px solid #CCCCCC;

  z-index: 20000;

}

#trackers_description_dialog h4 {

  color: #979797;

  font-weight: bold;

  border-bottom: solid 1px #c0c0c0;

}

#trackers_description_dialog h4.selected {

  color: inherit;

  font-style: italic;

}

#trackers_description_dialog td {

  padding: 8px 8px; 8px 4px;

}