anchor.diff:                          <% team.team_user_ships.each do |te| %>
                               <div class="profile-activity clearfix" id="<%= "hide-player-#{te.user_id}" %>">
                                 <div>
  -                                <%= te.user.user_profile.username %> - <%= te.user.nickname[0..10] %>
  +                                <%= te.user.user_profile.try(:username) %> - <%= te.user.nickname[0..10] %>
                                 </div>
   
                                 <% if te.user_id == team.user_id %>
                                     <div class="tools action-buttons">
                                       队长
  -                                    <a href="#update-team-player" role="button" data-toggle="modal" class="blue update-team-player" style="cursor: pointer" title="换人" data-id="<%= team.id %>" data-user-id="<%= te.user_id %>" data-text="<%= te.user.user_profile.username %>" data-name="<%= team.try(:identifier) %>">
  +                                    <a href="#update-team-player" role="button" data-toggle="modal" class="blue update-team-player" style="cursor: pointer" title="换人" data-id="<%= team.id %>" data-user-id="<%= te.user_id %>" data-text="<%= te.user.user_profile.try(:username) %>" data-name="<%= team.try(:identifier) %>">
                                         <i class="icon-pencil bigger-125"></i>
                                       </a>
                                     </div>
                                 <% else %>
                                     <div class="tools action-buttons">
  -                                    <a href="#update-team-player" role="button" data-toggle="modal" class="blue update-team-player" style="cursor: pointer" title="换人" data-id="<%= team.id %>" data-user-id="<%= te.user_id %>" data-text="<%= te.user.user_profile.username %>" data-name="<%= team.try(:identifier) %>">
  +                                    <a href="#update-team-player" role="button" data-toggle="modal" class="blue update-team-player" style="cursor: pointer" title="换人" data-id="<%= team.id %>" data-user-id="<%= te.user_id %>" data-text="<%= te.user.user_profile.try(:username) %>" data-name="<%= team.try(:identifier) %>">
                                         <i class="icon-pencil bigger-125"></i>
                                       </a>
  -                                    <a class="red delete-team-player" title="删除队员" style="cursor: pointer" data-id="<%= team.id %>" data-text="<%= te.user.user_profile.username %>" data-name="<%= te.user_id %>">
  +                                    <a class="red delete-team-player" title="删除队员" style="cursor: pointer" data-id="<%= team.id %>" data-text="<%= te.user.user_profile.try(:username) %>" data-name="<%= te.user_id %>">
                                         <i class="icon-remove bigger-125"></i>
                                       </a>
                                     </div>
  
positive.code:                 <select class="width-80 chosen-select" id="select-update-team-player" data-placeholder="选择一名队员...">
                    <option value="">请选择一名队员</option>
                    <% @users.each do |user| %>
                        <option value="<%= user.id %>"><%= "#{user.user_profile.username} - #{user.nickname}" %></option>
                    <% end %>
  
                  </select>
  
negative.code:           取消
          </button>
  
          <button class="btn btn-sm btn-primary create-team-submit" type="submit">
            <i class="icon-ok"></i>
            提交
          </button>
  