新增：新增反馈意见邮件回复功能

app/controllers/admins/feedbacks_controller.rb

@@ -25,12 +25,12 @@ class Admins::FeedbacksController < Admins::BaseController
   def create_history 
     @feedback_message_history = @feedback.feedback_message_histories.new(feedback_message_history_params)
     @feedback_message_history.user = current_user
-    if @feedback_message_history.save 
+    if @feedback_message_history.save!
       redirect_to admins_feedbacks_path 
       flash[:success] = "发送通知成功"
     else 
       redirect_to admins_feedbacks_path 
-      flash[:danger] = "发送通知失败"
+      flash[:danger] = @feedback_message_history.errors.full_messages.join(", ")
     end
   end
 

app/mailers/user_mailer.rb

@@ -1,6 +1,6 @@
 class UserMailer < ApplicationMailer
   # 注意：这个地方一定要和你的邮箱服务域名一致
-  default from: 'notification@trustie.org'
+  default from: 'admin@trustie.org'
 
   # 用户注册验证码
   def register_email(mail, code)
@@ -12,4 +12,8 @@ class UserMailer < ApplicationMailer
     @code = code
     mail(to: mail, subject: 'Gitink | 更改邮箱验证码')
   end
+
+  def feedback_email(mail, title, content)
+    mail(to: mail, subject: title, content_type: "text/html", body: content)
+  end
 end

app/models/feedback_message_history.rb

@@ -20,5 +20,15 @@ class FeedbackMessageHistory < ApplicationRecord
 
   belongs_to :feedback 
   belongs_to :user 
-  
+
+  before_validation :send_meessage_email, on: :create
+
+  private 
+
+  def send_meessage_email
+    unless UserMailer.update_email(mail, verification_code).deliver_now
+      errors[:title] << '邮件发送失败！'
+    end
+  end
+
 end