组织加入成员时，如果没有选择用户，弹窗给出提示

app/controllers/org_member_controller.rb

@@ -10,6 +10,9 @@ class OrgMemberController < ApplicationController
 
   def create
     @org = Organization.find(params[:org])
+    if params[:membership].nil?
+      @fail_hint = l(:label_blank_user_lists_for_org)
+    else
       member_ids = params[:membership][:user_ids]
       role_id = params[:orgRole]
       member_ids.each do |user_id|
@@ -17,6 +20,7 @@ class OrgMemberController < ApplicationController
         @org.org_members << member
         OrgMemberRole.create(:org_member_id => member.id, :role_id => role_id)
       end
+    end
     respond_to do |format|
       format.js
     end

app/views/org_member/create.js.erb

@@ -1,2 +1,6 @@
-$("#org_member_list").html('<%= escape_javascript( render :partial=>"organizations/org_member_list",:locals=> {:members=>@org.org_members}) %>');
-$("#principals_for_new_member").html('')
+<% if @fail_hint %>
+    alert("<%= @fail_hint %>");
+<% else %>
+    $("#org_member_list").html('<%= escape_javascript( render :partial=>"organizations/org_member_list",:locals=> {:members=>@org.org_members}) %>');
+    $("#principals_for_new_member").html('');
+<% end %>

config/locales/zh.yml

@@ -2091,5 +2091,6 @@ zh:
   label_language: 语言
   label_license: 湘ICP备09019772
   label_org_name: 组织名称：
+  label_blank_user_lists_for_org: 您还没有选择用户