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ruby-on-rails - 找不到没有 ID 的用户，通知程序

问题描述

我正在发送带有消息和主题的简单邮件，当我想将邮件发送到目标邮件时，我收到以下错误，“找不到没有 ID 的用户”

我有以下代码：

应用程序/邮件程序/notifier.rb：

def envio_mail(subject, message, user)
  @user = User.find(user)
  @muser = user
  @body_message = message
  mail(:to => @user.email, :subject => subject)
end

应用程序/控制器/gratitudes_controller.rb：

def create
  @gratitude = Gratitude.new(params[:gratitude])

  user = params[:user_id]
  Notifier.envio_mail(params[:subject], params[:message], user).deliver

  respond_to do |format|
    if @gratitude.save
      format.html { redirect_to(@gratitude, :notice => 'Gratitude was successfully created.') }
      format.xml  { render :xml => @gratitude, :status => :created, :location => @gratitude }
    else
      format.html { render :action => "new" }
      format.xml  { render :xml => @gratitude.errors, :status => :unprocessable_entity }
    end
  end
end

这是错误：

Started POST "/gratitudes" for 127.0.0.1 at 2020-02-26 17:10:55 -0500
Processing by GratitudesController#create as HTML
Parameters: {"utf8"=>"✓", "authenticity_token"=>"iofCtlwd5CE5Zbuo5n6NzCo4Inksht4o05OiiwYUY24=", "gratitude"=>{"subject"=>"asdasd", "message"=>"<p>asda</p>", "user_id"=>"4"}, "commit"=>"Enviar mensaje"}
      SCHEMA (0.6ms)  SHOW TABLES 
      ClientParameterization Load (0.2ms)  SELECT `client_parameterizations`.* FROM `client_parameterizations` LIMIT 1
      User Load (0.2ms)  SELECT `users`.* FROM `users` WHERE `users`.`id` = 1 LIMIT 1
      Profile Load (0.2ms)  SELECT `profiles`.* FROM `profiles` WHERE `profiles`.`id` = 1 LIMIT 1
    Completed 404 Not Found in 130ms

    ActiveRecord::RecordNotFound (Couldn't find User without an ID):
      app/mailers/notifier.rb:405:in `envio_mail'
      app/controllers/gratitudes_controller.rb:48:in `create'

标签： ruby-on-rails

解决方案

在你的参数中"gratitude"=>{"subject"=>"asdasd", "message"=>"<p>asda</p>", "user_id"=>"4"}

user_id嵌套在里面gratitude，这样做是为了获取user_id

user = params[:gratitude][:user_id]

建议

为确保仅在成功创建 Gratitude 时发送邮件，您可以将邮件触发器移动到模型中的after_commit回调Gratitude

在感恩模型中

after_commit :send_mail, on: :create

def send_mail
  Notifier.envio_mail(subject, message, user_id).deliver
end

希望有帮助！

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