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

@@ -10,12 +10,16 @@ class OrgMemberController < ApplicationController
 
   def create
     @org = Organization.find(params[:org])
-    member_ids = params[:membership][:user_ids]
-    role_id = params[:orgRole]
-    member_ids.each do |user_id|
-      member =  OrgMember.create(:user_id=>user_id)
-      @org.org_members << member
-      OrgMemberRole.create(:org_member_id => member.id, :role_id => role_id)
+    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|
+        member =  OrgMember.create(:user_id=>user_id)
+        @org.org_members << member
+        OrgMemberRole.create(:org_member_id => member.id, :role_id => role_id)
+      end
     end
     respond_to do |format|
       format.js

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