#948 admin配置管理--用户列表--项目列表：如图下拉框显示超出边框且项目问题，解决，说小选项长度，添加title属性，鼠标悬停时显示选项的完整信息

app/helpers/application_helper.rb

@@ -460,6 +460,7 @@ module ApplicationHelper
     project_tree(projects) do |project, level|
       name_prefix = (level > 0 ? ' ' * 2 * level + '» ' : '').html_safe
       tag_options = {:value => project.id}
+      tag_options[:title] = project.name
       if project == options[:selected] || (options[:selected].respond_to?(:include?) && options[:selected].include?(project))
         tag_options[:selected] = 'selected'
       else

public/stylesheets/application.css

@@ -2835,3 +2835,7 @@ div.repos_explain{
 
 .projects-index{min-height: 350px}
 .school-index{min-height: 400px}
+#membership_project_id option
+{
+    width: 190px;
+}