Question

我正在开发一个简单的Ruby on Rails单页网站，该网站上有一个＆＃39;联系我们＆＃39;形成。它有3个字段 - 名称，电子邮件和文本 - 以及提交按钮。理论上，在填写这些表单并单击按钮后，用户将收到一封确认请求的电子邮件。控制器基本上只有一种方法可以将数据写入数据库，成功保存后会发送一封电子邮件。

问题是控制器没有收到参数（姓名，电子邮件和文本）并引发异常：ActionController::ParameterMissing (param is missing or the value is empty: application)

我确定数据已发送。这是日志：

Started POST "/" for 127.0.0.1 at 2015-07-23 20:25:08 +0300
Processing by ApplicationsController#create as HTML
  Parameters: {"name"=>"Foo Bar", "email"=>"foobar@example.com", "text"=>"qwerqwepoiqtwporihtqwojbr[sdfzxc"}
Completed 400 Bad Request in 381609ms

控制器的源代码：

class ApplicationsController < ApplicationController

  skip_before_filter :verify_authenticity_token, :if => Proc.new { |c| c.request.format == 'text/html' }

  def new
    @request = Application.new
  end

  def create
    @request = Application.new(application_params)
    if @request.save
      ApplicationMailer.request_confirmation(@request).deliver_now
      flash[:info] = 'Your application has been registered! Check your e-mail!'
    else
      flash[:alert] = 'Oops! Your application was not registered!'
    end
  end

  private
    def application_params
      params.require(:application).permit(:name, :email, :text)
    end
end

应用程序模型的源代码：

class Application < ActiveRecord::Base
  before_save{
    self.email.downcase!
  }
  validates(:name, presence: true, length: { maximum: 50 })
  VALID_EMAIL_REGEX = /\A[\w+\-.]+@[a-z\d\-]+(\.[a-z\d\-]+)*\.[a-z]+\z/i
  validates(:email, presence: true, length: {maximum: 255},
            format: {with: VALID_EMAIL_REGEX})
  validates(:text, presence: true)
end

有谁知道问题出在哪里以及如何解决？

提前谢谢。

UPD：表格代码：

<form method="post" class="form-horizontal col-md-8" name="application" id="applyForm">
        <div class="row" id="credentials">
          <div class="col-sm-6">
            <div class="input-group form-group" id="full_name">
              <span class="input-group-addon" id="basic-addon1"><i class="fa fa-user"></i></span>
              <input type="text" name="name" class="form-control" placeholder="Your name" aria-describedby="basic-addon1" id="name">
            </div>
          </div>
          <div class="col-sm-6">
            <div class="input-group form-group" id="email">
              <span class="input-group-addon" id="basic-addon1"><i class="fa fa-envelope"></i></span>
              <input type="text" name="email" class="form-control" placeholder="E-mail" aria-describedby="basic-addon1" id="email">
            </div>
          </div>
        </div>
        <div class="row" id="comment-area">
          <div class="col-sm-12" id="comment">
            <textarea class="form-control" name="text" rows="10" placeholder="Please describe your system" id="text"></textarea>
          </div>
        </div>
        <div class="row" id="submit-button">
          <button type="submit" class="btn btn-default"><i class="fa fa-rocket"></i>Send message</button>
        </div>
    </form>

Answer 1

您的params不是来自application，为了快速解决，只需将application_params更改为

以下

def application_params
  params.permit(:name, :email, :text)
end

Rails没有收到http post请求参数

1 个答案: