Question

我正在尝试设置邮件程序。当用户向讨论提交评论时，我希望该讨论的所有者接收电子邮件，但我一直收到NoMethodError。我无法弄清楚我应该在哪里定义email ......我希望这是我唯一的问题。

undefined method 'email' for #<ActiveRecord::Associations::CollectionProxy []>

在这一行：mail to: @user.email, subject: "You've got a comment!"

comments_controller.rb创建功能：

  def create
    @discussion = Discussion.find(params[:discussion_id])
    @comment = @discussion.comments.build(comment_params)
    if @comment.save
      Usermailer.commentcreated_email(@comment).deliver
      redirect_to new_discussion_comment_path(@discussion)
    end
  end

usermailer.rb

class Usermailer < ApplicationMailer
  default from: "***took out***"

  def commentcreated_email(comment)
    @comment    = comment
    @user       = @comment.users
    mail to: @user.email, subject: "You've got a comment!"
  end
end

development.rb

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

  config.action_mailer.delivery_method = :smtp
  config.action_mailer.smtp_settings = {
    :adress               => "smtp.gmail.com",         
    :port                 => 587,
    :domain               => "gmail.com",
    :user_name            => "***I do have an actual email here***",
    :password             => "***And an actual password***",
    :authentication       => "plain",
    :enable_starttls_auto => true }

commentcreated_email.html.erb

<!DOCTYPE html>
<html>
<head>
  <meta content='text/html; charset=UTF-8' http-equiv='Content-Type' />
</head>
<body>

  <h1>Comment Created</h1>
  <p>User <%= @comment.user %> posted a comment: </p>
  <br> <%= @comment.created_at.strftime('%m/%d/%Y %I:%M %p') %>
  <br> Project: <%= @comment.project.name %>
  <br> Hours: <%= @comment.hours %>
</body>
</html>

现在我没有在我的user.rb中添加任何东西，但也许我应该有？这就是它的样子：

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  has_many :likes, dependent: :nullify
  has_many :liked_comments, through: :likes, source: :comment

  def has_liked?(comment)
    liked_comments.include? comment
  end

end

Answer 1

您正在使用@user = @comment.users，它会返回一个数组<ActiveRecord::Associations::CollectionProxy []>。因此，在阵列上使用电子邮件总会引发错误。更改它将修复错误。

Rails：尝试设置邮件程序时出现NoMethodError

1 个答案: