参数缺失或值为空：联系人
param is missing or the value is empty: contacts
我正在尝试提交我的联系表，该表应该可以发送电子邮件。每次单击提交按钮时，我都会收到此错误："param is missing or the value is empty: contacts".
我的routes.rb:
Rails.application.routes.draw do
resources :contacts
root to: 'static#actor_list'
get 'static/actor_list'
get 'actor' => 'static#actor'
get 'contact' => 'static#contact'
end
我的contacts_controller.rb:
class ContactsController < ApplicationController
def new
@contact = Contact.new
end
def create
@contact = Contact.new(contact_params)
if @contact.valid?
ContactMailer.contact_email(@contact).deliver_now
redirect_to(new_contact_path, notice: 'Your query was sent.')
else
render :new
end
end
def show
end
private
def contact_params
params.require(:contact).permit(:name, :email, :subject, :message)
end
end
contact.rb:
class Contact
include ActiveModel::Model
attr_accessor :name, :email, :subject, :message
validates_presence_of :name, :subject, :message
validates :email, presence: true, email: true
end
查看：
<!-- scrollToTop -->
<!-- ================ -->
<div class="scrollToTop"><i class="icon-up-open-big"></i></div>
<!-- page wrapper start -->
<!-- ================ -->
<div class="page-wrapper">
<!-- page-intro start-->
<!-- ================ -->
<div class="page-intro">
<div class="container">
<div class="row">
<div class="col-md-12">
<ol class="breadcrumb">
<li><i class="fa fa-home pr-10"></i><a href="index.html">Home</a></li>
<li class="active">Contact</li>
</ol>
</div>
</div>
</div>
</div>
<!-- page-intro end -->
<!-- main-container start -->
<!-- ================ -->
<section class="main-container">
<div class="container">
<div class="row">
<!-- main start -->
<!-- ================ -->
<div class="main col-md-12">
<!-- page-title start -->
<!-- ================ -->
<h1 class="page-title">Contact Us</h1>
<!-- page-title end -->
<div class="row">
<div class="col-md-6">
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do tempor.</p>
<div class="alert alert-success hidden" id="MessageSent">
We have received your message, we will contact you very soon.
</div>
<div class="alert alert-danger hidden" id="MessageNotSent">
Oops! Something went wrong please refresh the page and try again.
</div>
<div class="contact-form">
<%= @contact.errors.full_messages.join(', ') %>
<%= form_for @contact, id: 'contact-form' do |f| %>
<div class="form-group has-feedback">
<%= f.label :name %>
<%= f.text_field :name, :class => 'form-control', :id => 'name', :name => 'name' %>
<i class="fa fa-user form-control-feedback"></i>
</div>
<div class="form-group has-feedback">
<%= f.label :email %>
<%= f.text_field :email, :class => 'form-control', :id => 'email', :name => 'email' %>
<i class="fa fa-envelope form-control-feedback"></i>
</div>
<div class="form-group has-feedback">
<%= f.label :subject %>
<%= f.text_field :subject, :class => 'form-control', :id => 'subject', :name => 'subject' %>
<i class="fa fa-navicon form-control-feedback"></i>
</div>
<div class="form-group has-feedback">
<%= f.label :message %>
<%= f.text_area :message, :class => 'form-control', :rows => '6', :id => 'message', :name => 'message' %>
<i class="fa fa-pencil form-control-feedback"></i>
</div>
<%= f.submit 'Submit Query', :class => 'submit-button btn btn-default' %>
<% end %>
</div>
</div>
<div class="col-md-6">
<!-- google maps start -->
<div id="map-canvas"></div>
<!-- google maps end -->
</div>
</div>
</div>
<!-- main end -->
</div>
</div>
</section>
<!-- main-container end -->
</div>
<!-- page-wrapper end -->
<!-- JavaScript files placed at the end of the document so the pages load faster
================================================== -->
<!-- Google Maps javascript -->
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
日志：
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.1ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (57.0ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_markup.html.erb (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/style.css.erb within layouts/inlined_string (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/console.js.erb within layouts/javascript (44.6ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/main.js.erb within layouts/javascript (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/error_page.js.erb within layouts/javascript (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/index.html.erb (99.5ms)
Started POST "/contacts" for ::1 at 2015-05-07 17:52:21 +0200
Processing by ContactsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"1vM4XYHNV18FBTzlSGROW7HQx37R3YHVPnlCOI/9RJZo2NsL8UitcbJNv6ileVKNSaI9fIxNIRGQK8JghztJjA==", "name"=>"fasd", "email"=>"fasdf@gmail.com", "subject"=>"dasdf", "message"=>"fasdf", "commit"=>"Submit Query"}
Completed 400 Bad Request in 6ms (ActiveRecord: 0.0ms)
ActionController::ParameterMissing (param is missing or the value is empty: contact):
app/controllers/contacts_controller.rb:22:in `contact_params'
app/controllers/contacts_controller.rb:7:in `create'
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_source.erb (6.0ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (3.2ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.7ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (69.2ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_markup.html.erb (0.6ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/style.css.erb within layouts/inlined_string (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/console.js.erb within layouts/javascript (61.1ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/main.js.erb within layouts/javascript (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/error_page.js.erb within layouts/javascript (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/index.html.erb (129.1ms)
由于您的 contact_params 需要 :contact，它希望 :name、:email、:subject 和 :message 进入联系人参数，但是当您在对象中设置 name 属性时，您将覆盖它。
如果您不设置它，Rails 将自动将其设置为，例如 contact[name]，一切都会正常工作。只需删除您字段中的 name。
Here 您可以看到 text_field 的行为方式以及它生成的 HTML 类型，您可以看到它设置的 name。
我正在尝试提交我的联系表，该表应该可以发送电子邮件。每次单击提交按钮时，我都会收到此错误："param is missing or the value is empty: contacts".
我的routes.rb:
Rails.application.routes.draw do
resources :contacts
root to: 'static#actor_list'
get 'static/actor_list'
get 'actor' => 'static#actor'
get 'contact' => 'static#contact'
end
我的contacts_controller.rb:
class ContactsController < ApplicationController
def new
@contact = Contact.new
end
def create
@contact = Contact.new(contact_params)
if @contact.valid?
ContactMailer.contact_email(@contact).deliver_now
redirect_to(new_contact_path, notice: 'Your query was sent.')
else
render :new
end
end
def show
end
private
def contact_params
params.require(:contact).permit(:name, :email, :subject, :message)
end
end
contact.rb:
class Contact
include ActiveModel::Model
attr_accessor :name, :email, :subject, :message
validates_presence_of :name, :subject, :message
validates :email, presence: true, email: true
end
查看：
<!-- scrollToTop -->
<!-- ================ -->
<div class="scrollToTop"><i class="icon-up-open-big"></i></div>
<!-- page wrapper start -->
<!-- ================ -->
<div class="page-wrapper">
<!-- page-intro start-->
<!-- ================ -->
<div class="page-intro">
<div class="container">
<div class="row">
<div class="col-md-12">
<ol class="breadcrumb">
<li><i class="fa fa-home pr-10"></i><a href="index.html">Home</a></li>
<li class="active">Contact</li>
</ol>
</div>
</div>
</div>
</div>
<!-- page-intro end -->
<!-- main-container start -->
<!-- ================ -->
<section class="main-container">
<div class="container">
<div class="row">
<!-- main start -->
<!-- ================ -->
<div class="main col-md-12">
<!-- page-title start -->
<!-- ================ -->
<h1 class="page-title">Contact Us</h1>
<!-- page-title end -->
<div class="row">
<div class="col-md-6">
<p>Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do tempor.</p>
<div class="alert alert-success hidden" id="MessageSent">
We have received your message, we will contact you very soon.
</div>
<div class="alert alert-danger hidden" id="MessageNotSent">
Oops! Something went wrong please refresh the page and try again.
</div>
<div class="contact-form">
<%= @contact.errors.full_messages.join(', ') %>
<%= form_for @contact, id: 'contact-form' do |f| %>
<div class="form-group has-feedback">
<%= f.label :name %>
<%= f.text_field :name, :class => 'form-control', :id => 'name', :name => 'name' %>
<i class="fa fa-user form-control-feedback"></i>
</div>
<div class="form-group has-feedback">
<%= f.label :email %>
<%= f.text_field :email, :class => 'form-control', :id => 'email', :name => 'email' %>
<i class="fa fa-envelope form-control-feedback"></i>
</div>
<div class="form-group has-feedback">
<%= f.label :subject %>
<%= f.text_field :subject, :class => 'form-control', :id => 'subject', :name => 'subject' %>
<i class="fa fa-navicon form-control-feedback"></i>
</div>
<div class="form-group has-feedback">
<%= f.label :message %>
<%= f.text_area :message, :class => 'form-control', :rows => '6', :id => 'message', :name => 'message' %>
<i class="fa fa-pencil form-control-feedback"></i>
</div>
<%= f.submit 'Submit Query', :class => 'submit-button btn btn-default' %>
<% end %>
</div>
</div>
<div class="col-md-6">
<!-- google maps start -->
<div id="map-canvas"></div>
<!-- google maps end -->
</div>
</div>
</div>
<!-- main end -->
</div>
</div>
</section>
<!-- main-container end -->
</div>
<!-- page-wrapper end -->
<!-- JavaScript files placed at the end of the document so the pages load faster
================================================== -->
<!-- Google Maps javascript -->
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false"></script>
日志：
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.1ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (57.0ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_markup.html.erb (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/style.css.erb within layouts/inlined_string (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/console.js.erb within layouts/javascript (44.6ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/main.js.erb within layouts/javascript (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/error_page.js.erb within layouts/javascript (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/index.html.erb (99.5ms)
Started POST "/contacts" for ::1 at 2015-05-07 17:52:21 +0200
Processing by ContactsController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"1vM4XYHNV18FBTzlSGROW7HQx37R3YHVPnlCOI/9RJZo2NsL8UitcbJNv6ileVKNSaI9fIxNIRGQK8JghztJjA==", "name"=>"fasd", "email"=>"fasdf@gmail.com", "subject"=>"dasdf", "message"=>"fasdf", "commit"=>"Submit Query"}
Completed 400 Bad Request in 6ms (ActiveRecord: 0.0ms)
ActionController::ParameterMissing (param is missing or the value is empty: contact):
app/controllers/contacts_controller.rb:22:in `contact_params'
app/controllers/contacts_controller.rb:7:in `create'
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_source.erb (6.0ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_trace.html.erb (3.2ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/_request_and_response.html.erb (1.7ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/actionpack-4.2.1/lib/action_dispatch/middleware/templates/rescues/diagnostics.html.erb within rescues/layout (69.2ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_markup.html.erb (0.6ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/style.css.erb within layouts/inlined_string (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_inner_console_markup.html.erb within layouts/inlined_string (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/_prompt_box_markup.html.erb within layouts/inlined_string (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/console.js.erb within layouts/javascript (61.1ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/main.js.erb within layouts/javascript (0.4ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/error_page.js.erb within layouts/javascript (0.3ms)
Rendered /Users/maahd/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/web-console-2.1.2/lib/web_console/templates/index.html.erb (129.1ms)
由于您的 contact_params 需要 :contact，它希望 :name、:email、:subject 和 :message 进入联系人参数，但是当您在对象中设置 name 属性时，您将覆盖它。
如果您不设置它，Rails 将自动将其设置为，例如 contact[name]，一切都会正常工作。只需删除您字段中的 name。
Here 您可以看到 text_field 的行为方式以及它生成的 HTML 类型，您可以看到它设置的 name。