socialforge/app/views/avatar/_new_avatar_form.html.erb

<div class="banner-course-avatar fl">
  <%= image_tag(url_to_avatar(source), id: "avatar_image", :width =>"60", :height =>"60",:alt=>"上传图片", :class => "fl pro_new_upimg")%>
  <a class="banner-course-inner" href="javascript:void(0)" onclick="$('#upload_course_logo').click();"></a>
  <a class="banner-course-notice" href="javascript:void(0)" onclick="$('#upload_course_logo').click();">更换图片</a>
</div>
<a href="javascript:void(0)" class="fl mt45 ml5" style="line-height: 1.5" onclick="$('#upload_course_logo').click();">点击更换</a>
<%= file_field_tag 'avatar[image]',
                   :id => 'upload_course_logo',
                   :class => 'undis upload_file',
                   :size => "1",
                   :multiple => true,
                   :data => {
                           :max_file_size => Setting.upload_avatar_max_size,
                           :max_file_size_message => l(:error_upload_avatar_to_large, :max_size => number_to_human_size(Setting.upload_avatar_max_size.to_i)),
                           :max_concurrent_uploads => Redmine::Configuration['max_concurrent_ajax_uploads'].to_i,
                           :file_type => Redmine::Configuration['pic_types'].to_s,
                           :type_support_message => l(:error_pic_type),
                           :upload_path => upload_avatar_path(:format => 'js'),
                           :description_placeholder => nil ,# l(:label_optional_description)
                           :source_type => source.class.to_s,
                           :source_id => source.id.to_s,
                           :is_direct => 0
                   } %>
<!--</span>-->
<% content_for :header_tags do %>
    <%= javascript_include_tag 'jq-upload/jquery.ui.widget', 'jq-upload/jquery.iframe-transport', 'jq-upload/jquery.fileupload', 'jq-upload/upload' %>
<% end %>
<div class="cl"></div>