Rails 4 的动作邮件程序

Posted 2023-02-22

【中文标题】Rails 4 的动作邮件程序

【英文标题】：action mailer for rails 4

【发布时间】：2014-11-09 04:43:41

【问题描述】：

我一直在关注一个相当古老的教程，以便创建一个联系表单，然后创建一个发送给站点管理员的邮件。我认为我遇到了一些问题，因为我在 Rails 4.1.1 上并且教程太旧了！我想知道是否有人可以给我一些指导 - 我正在学习轨道。我目前得到的错误是 MessagesController 中的 NoMethodError#create undefined method `subject' for # 主题message.subject

这是我的代码

消息控制器：

class MessagesController < ApplicationController
  before_action :set_message, only: [:show, :edit, :update, :destroy]

  # GET /messages
  # GET /messages.json
  def index
    @messages = Message.all
  end

  # GET /messages/1
  # GET /messages/1.json
  def show
  end

  # GET /messages/new
  def new
    @message = Message.new
  end

  # GET /messages/1/edit
  def edit
  end

  # POST /messages
  # POST /messages.json
  def create
    @message = Message.new(message_params)

respond_to do |format|
  if @message.save
    ContactMailer.deliver_message(@message)
    flash.now[:notice] = 'Thank you for your message!'
    format.html  redirect_to root_path 
    format.json  render :show, status: :created, location: @message 
  else
    format.html  render :new 
    format.json  render json: @message.errors, status: :unprocessable_entity 
  end
end

结束

# PATCH/PUT /messages/1 # PATCH/PUT /messages/1.json 定义更新 respond_to 做 |格式| 如果@message.update(message_params) format.html redirect_to @message, notice: '消息已成功更新。' format.json 渲染：显示，状态：：好的，位置：@message 别的 format.html 渲染：编辑 format.json 渲染 json：@message.errors，状态：：unprocessable_entity 结尾 结尾 结束

# 删除 /messages/1 # 删除 /messages/1.json 定义破坏 @message.destroy respond_to 做 |格式| format.html redirect_to messages_url, notice: '消息被成功销毁。' format.json 头 :no_content 结尾 结束

私人的 # 使用回调在动作之间共享通用设置或约束。 def set_message @message = Message.find(params[:id]) 结束

# Never trust parameters from the scary internet, only allow the white list through.
def message_params
  params.require(:message).permit(:name, :email, :company, :phone, :subject, :body)
end

结束

开发.rb：

Rails.application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Do not eager load code on boot.
  config.eager_load = false

  # Show full error reports and disable caching.
  config.consider_all_requests_local       = true
  config.action_controller.perform_caching = false

  # Don't care if the mailer can't send.
  config.action_mailer.raise_delivery_errors = true

  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = 
    address: "smpt.gmail.com",
    port: "587",
    domain: "gmail.com",
    authentication: "plain",
    enable_starttls_auto: true,
    user_name: 'your_email_username',
    password: 'your_email_password'
  

  CONTACT_RECIPIENT = '[e-mail]'
  # Print deprecation notices to the Rails logger.
  config.active_support.deprecation = :log

  # Raise an error on page load if there are pending migrations.
  config.active_record.migration_error = :page_load

  # Debug mode disables concatenation and preprocessing of assets.
  # This option may cause significant delays in view rendering with a large
  # number of complex assets.
  config.assets.debug = true

  # Adds additional error checking when serving assets at runtime.
  # Checks for improperly declared sprockets dependencies.
  # Raises helpful error messages.
  config.assets.raise_runtime_errors = true

  # Raises error for missing translations
  # config.action_view.raise_on_missing_translations = true

  # Required for Devise gem
  config.action_mailer.default_url_options =  :host => 'localhost:3000' 

end

class ContactMailer < ActionMailer::Base
  default from: "[e-mail]"

  # Subject can be set in your I18n file at config/locales/en.yml
  # with the following lookup:
  #
  #   en.contact_mailer.message.subject
  #

    def message(message)
    subject    message.subject
    body       :message => message
    recipients CONTACT_RECIPIENT
    from       message.email
    sent_on    Time.now
    end

  end
end

message.html.erb

Email from your web site

From: <%= @message.name %>

Company: <%= @message.company %>

Phone: <%= @message.phone %>

Message: <%= @message.body %>

消息/_form.html.erb

<%= semantic_form_for @message do |f| %>
  <%= f.inputs do %>
    <%= f.input :name %>
    <%= f.input :company %>
    <%= f.input :phone %>
    <%= f.input :email %>
    <%= f.input :subject %>
    <%= f.input :body %>
  <% end %>

  <%= f.actions do %>
    <%= f.action :submit, :as => :input %>
  <% end %>
<% end %>

db 架构文件的相关部分

 create_table "messages", force: true do |t|
    t.string   "name"
    t.string   "company"
    t.string   "phone"
    t.string   "email"
    t.string   "subject"
    t.text     "body"
    t.datetime "created_at"
    t.datetime "updated_at"
  end

【问题讨论】：

你把你的ContactMailer 类放在development.rb 里面了吗？也许看看ActionMailer basics 也会有所帮助。

主题是消息表中的一列吗？您可以仔细检查您的 db/schema.rb 以验证它是否列在消息表下。此外，贾斯汀所说..您的 ContactMailer 应该在 app/mailers 中，而不是在 development.rb 中

我相信主题栏在那里-我已经相应地编辑了问题！

当您说将联系人邮件程序放入 development.rb 文件时，您可以扩展一下。在我在这里问之前，我已经用尽了我能找到的所有文档，包括那些文档！

【参考方案1】：

def deliver_message(message)
  subject    message.subject
  body       :message => message
  recipients CONTACT_RECIPIENT
  from       message.email
  sent_on    Time.now
end

应该是

def deliver_message(message)
  @message = message
  mail(subject: message.subject, body: message.body, recipients: CONTACT_RECIPIENT, from: message.email, sent_on: Time.now)
 end

【讨论】：

SyntaxError (/Users/em/new/app/mailers/contact_mailer.rb:26: 语法错误，意外 ':'，期望关键字_end 主题：message.subject ^ /Users/em/new/ app/mailers/contact_mailer.rb:27: 语法错误，意外':'，期待keyword_end body: :message => message ^ /Users/em/new/app/mailers/contact_mailer.rb:28: 语法错误，意外' :'，期待keyword_end 收件人：CONTACT_RECIPIENT ^ /Users/em/new/app/mailers/contact_mailer.rb:29：语法错误，意外':'，期待keyword_end 来自：message.email ^

/Users/em/new/app/mailers/contact_mailer.rb:30：语法错误，意外'：'，期待keyword_end sent_on：Time.now ^ /Users/em/new/app/ mailers/contact_mailer.rb:34：语法错误，意外的keyword_end，期望输入结束）：

/Users/em/new/app/mailers/contact_mailer.rb:26：语法错误，意外'：'，期望关键字_结束主题：message.subject，^ /Users/em/new/app /mailers/contact_mailer.rb:27：语法错误，意外 tLABEL，期待 '=' 正文：message.body，^ /Users/em/new/app/mailers/contact_mailer.rb:28：语法错误，意外 tLABEL，期待'=' 收件人：CONTACT_RECIPIENT，^ /Users/em/new/app/mailers/contact_mailer.rb:28：动态常量分配 /Users/em/new/app/mailers/contact_mailer.rb:30：语法错误，意外 tLABEL , 期待 '=' sent_on: Time.now ^