修改邮箱邀请时，邮件为空时提示错误

app/controllers/projects_controller.rb

@@ -334,8 +334,7 @@ class ProjectsController < ApplicationController
   end
 
   def send_mail_to_member
-
-    if !params[:mail].nil? && User.find_by_mail(params[:mail].to_s).nil?
+    if !params[:mail].blank? && User.find_by_mail(params[:mail].to_s).nil?
       email = params[:mail]
       Mailer.send_invite_in_project(email, @project, User.current).deliver
       @is_zhuce =false

app/views/projects/invite_members_by_mail.html.erb

@@ -1,3 +1,12 @@
+<script>
+	function ismail(mail) {
+ 	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
+ 	if (filter.test(mail)) return true;
+ 	else {
+ 	alert('您的电子邮件格式不正确');
+ 	return false;}
+}
+</script>
 <div class="project_r_h">
   <h2 class="project_h2">邀请加入</h2>
 </div>
@@ -9,7 +18,7 @@
 	<div class="box_main">
 		<h3 class="box_h3">发送邮件邀请新用户</h3>
 		<p class="box_p">
-			输入好友邮箱地址，Trustie帮您免费发送！
+			输入好友邮箱地址，Trustie会自动为该邮箱注册用户！
 		</p>
 		<div id="is_registed">
 			<%= render :partial => 'regested', locals: { :isregisted => false} %>

config/locales/zh.yml

@@ -181,7 +181,7 @@ zh:
   notice_successful_create: 创建成功
   notice_successful_update: 更新成功
   notice_successful_delete: 删除成功
-  notice_registed_success: 该邮箱已被注册，请直接邀请注册用户
+  notice_registed_success: 您输入的邮箱为空或者该邮箱已被注册!
   notice_failed_delete: 删除失败
   notice_successful_connection: 连接成功
   notice_successful_join: 加入成功