我有一个联系表单，用户提交他的信息，我应该发送给网站的管理员。但是有2封电子邮件被发送给管理员，而不是一封
```
Parameters: {"utf8"=>"✓", "authenticity_token"=>"rJr/Z9zM21HhKhiQ0vw2afHKkTchUgDAxnvm13s3pD3jb8Elu/B65pHN2BUTUCwLauowgOum4JdyGeNdCsi3QQ==", "contact"=>{"name"=>"vamsi gates", "mobile"=>"07639817688", "email"=>"gvpmahesh@outlook.com", "requirement"=>"hello, my name is bamsi"}, "commit"=>"submit"}
(0.2ms) BEGIN
Contact Exists (0.6ms) SELECT 1 AS one FROM "contacts" WHERE "contacts"."name" = $1 AND "contacts"."mobile" = $2 AND "contacts"."requirement" = $3 AND "contacts"."email" = $4 LIMIT $5 [["name", "vamsi gates"], ["mobile", "07639817688"], ["requirement", "hello, my name is bamsi"], ["email", "gvpmahesh@outlook.com"], ["LIMIT", 1]]
Started POST "/contacts" for 127.0.0.1 at 2016-10-13 13:20:03 +0530
Processing by ContactsController#create as JS
SQL (2.2ms) INSERT INTO "contacts" ("name", "mobile", "email", "requirement", "created_at", "updated_at") VALUES ($1, $2, $3, $4, $5, $6) RETURNING "id" [["name", "vamsi gates"], ["mobile", "07639817688"], ["email", "gvpmahesh@outlook.com"], ["requirement", "hello, my name is bamsi"], ["created_at", 2016-10-13 07:50:03 UTC], ["updated_at", 2016-10-13 07:50:03 UTC]]
Parameters: {"utf8"=>"✓", "authenticity_token"=>"rJr/Z9zM21HhKhiQ0vw2afHKkTchUgDAxnvm13s3pD3jb8Elu/B65pHN2BUTUCwLauowgOum4JdyGeNdCsi3QQ==", "contact"=>{"name"=>"vamsi gates", "mobile"=>"07639817688", "email"=>"gvpmahesh@outlook.com", "requirement"=>"hello, my name is bamsi"}, "commit"=>"submit"}
(0.2ms) BEGIN
Contact Exists (0.5ms) SELECT 1 AS one FROM "contacts" WHERE "contacts"."name" = $1 AND "contacts"."mobile" = $2 AND "contacts"."requirement" = $3 AND "contacts"."email" = $4 LIMIT $5 [["name", "vamsi gates"], ["mobile", "07639817688"], ["requirement", "hello, my name is bamsi"], ["email", "gvpmahesh@outlook.com"], ["LIMIT", 1]]
SQL (0.5ms) INSERT INTO "contacts" ("name", "mobile", "email", "requirement", "created_at", "updated_at") VALUES ($1, $2, $3, $4, $5, $6) RETURNING "id" [["name", "vamsi gates"], ["mobile", "07639817688"], ["email", "gvpmahesh@outlook.com"], ["requirement", "hello, my name is bamsi"], ["created_at", 2016-10-13 07:50:03 UTC], ["updated_at", 2016-10-13 07:50:03 UTC]]
(51.0ms) COMMIT
Rendering guest_mailer/query_email.html.erb within layouts/mailer
Rendered guest_mailer/query_email.html.erb within layouts/mailer (0.5ms)
GuestMailer#query_email: processed outbound mail in 8.0ms
(81.0ms) COMMIT
Rendering guest_mailer/query_email.html.erb within layouts/mailer
Rendered guest_mailer/query_email.html.erb within layouts/mailer (0.1ms)
GuestMailer#query_email: processed outbound mail in 7.1ms
Sent mail to gvpmahesh@gmail.com, mahesh@digifutura.com, gvpm1994@gmail.com (20368.0ms)
Date: Thu, 13 Oct 2016 13:20:03 +0530
From: tech@digifutura.com
To: gvpmahesh@gmail.com,
mahesh@digifutura.com,
gvpm1994@gmail.com
Message-ID: <57ff3cabc6732_5c9b1a24e40470c@gates.mail>
Subject: We have a new lead from vamsi gates
Mime-Version: 1.0
Content-Type: text/html;
charset=UTF-8
Content-Transfer-Encoding: 7bit
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
/* Email styles need to be inline */
</style>
</head>
<body>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<link href='https://fonts.googleapis.com/css?family=Roboto+Slab:400,300,700' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Roboto+Slab:400,300,700' rel='stylesheet' type='text/css'>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, target-densitydpi=device-dpi, user-scalable=0">
<title>New enquiry for digifutura</title>
</head>
<body>
Name: vamsi gates <br>
Mobile: 07639817688 <br>
Email: gvpmahesh@outlook.com <br>
Requirement brief: <br>
hello, my name is bamsi
</body>
</html>
</body>
</html>
Rendering contacts/create.js.erb
Sent mail to gvpmahesh@gmail.com, mahesh@digifutura.com, gvpm1994@gmail.com (20346.5ms)
Date: Thu, 13 Oct 2016 13:20:03 +0530
From: tech@digifutura.com
To: gvpmahesh@gmail.com,
mahesh@digifutura.com,
gvpm1994@gmail.com
Message-ID: <57ff3cabcef05_5c9b1a24b9847124@gates.mail>
Subject: We have a new lead from vamsi gates
Mime-Version: 1.0
Content-Type: text/html;
charset=UTF-8
Content-Transfer-Encoding: 7bit
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style>
/* Email styles need to be inline */
</style>
</head>
<body>
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.5.0/css/font-awesome.min.css">
<link href='https://fonts.googleapis.com/css?family=Roboto+Slab:400,300,700' rel='stylesheet' type='text/css'>
<link href='https://fonts.googleapis.com/css?family=Roboto+Slab:400,300,700' rel='stylesheet' type='text/css'>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, target-densitydpi=device-dpi, user-scalable=0">
<title>New enquiry for digifutura</title>
</head>
<body>
Name: vamsi gates <br>
Mobile: 07639817688 <br>
Email: gvpmahesh@outlook.com <br>
Requirement brief: <br>
hello, my name is bamsi
</body>
</html>
</body>
</html>
```
但我已经为联系模式进行了验证，这应该会阻止这类插入。在控制台中，我无法使用相同的信息创建新记录，但记录已插入rails服务器
class Contact < ApplicationRecord
validates :name, presence: true
validates :mobile, presence: true
validates :requirement, presence: true
validates :email, presence: true
validates_uniqueness_of :name, scope: [:mobile, :requirement, :email]
end
这是联系人控制器
class ContactsController < ApplicationController
def create
@contact = Contact.new(get_params)
if @contact.save!
GuestMailer.query_email(params[:contact][:name],
params[:contact][:mobile],
params[:contact][:email],
params[:contact][:requirement]).deliver
end
end
private
def get_params
params.require(:contact).permit(:name, :mobile, :email, :requirement)
end
end
这是表格
<div class="col-xs-12 col-sm-4 col-sm-offset-4">
<%= simple_form_for :contact,url: contacts_path,html: {id: 'contact-form'}, authenticity_token: true, remote: true do |f| %>
<%= f.input :name, placeholder: 'Your Name', requried: true, label: false %>
<%= f.input :mobile, placeholder: 'Your Mobile Number (optional)', label: false, required: false %>
<%= f.input :email, placeholder: 'Your email id', required: true, label: false %>
<%= f.input :requirement, placeholder: 'Your Requirement in Brief', required: true, label: false, as: :text %>
<%= f.submit :submit, class: 'btn cta' %>
<% end %>
</div>
以下是create.js.erb
$('.contact-form').hide();
$('.confirmation-message').show();
$(".cta").attr("disabled", true);
问题：
我不确定，为什么会发生2次插入，是什么让它触发2次
第二个是即使触发器是2次，验证也不应允许Contact模型再次保存相同的数据。
答案 0 :(得分：1)
是create.js渲染2次？好像有2个线程正在运行..
答案 1 :(得分：0)
试试这个，它会对你有用
<%= f.submit :submit, class: 'btn cta', data: { disable_with: "Processing" } %>