为什么我会得到"未定义的方法`编码'"？

Question

为什么我会得到"未定义的方法`编码'"？我怎样才能解决这个问题？

错误信息

NoMethodError (undefined method `encoding' for #<Array:0x000000218f61e8>):
 app/controllers/messages_controller.rb:255:in `deliver'

messages_controller.rb

# coding: UTF-8

class MessagesController < ApplicationController

    deliver
        users = User.confirmed.order("created_at ASC")

        @users_emails = []          
        users.each do |user|
            @users_emails += [user.email]
        end

        subject = params[:messages][:subject] 
        body = params[:messages][:body]

        CallMailer.call_email(@users_emails, subject, body).deliver  <= This is line 255  
    end

end

邮寄/ call_mailer.rb

# coding: UTF-8

class CallMailer < ActionMailer::Base

    default :from => "dont-reply@example.com"

    def call_email(users_emails, mesesage_subject, mesesage_body)
        @users_emails = users_emails
        @mesesage_subject = mesesage_subject
        @mesesage_body = mesesage_body
        mail(
            :bcc => @users_emails,
            :subject => @mesesage_subject,
            :body => @mesesage_body) do |format|
            format.html
        end
    end

end

Answer 1

我发现你正在为bcc获得正确的数组,可能你有一些错误的电子邮件地址.

当一个电子邮件地址在@之前包含一个点时,例如test.@ test.com,并作为一个数组的一部分提交,你得到一个未定义的方法`encoding'for Array.该错误仅出现在Ruby 1.9中,并且仅在地址作为数组提交时才出现.

试试这个

def call_email(users_emails, mesesage_subject, mesesage_body)
        @users_emails = users_emails
        @mesesage_subject = mesesage_subject
        @mesesage_body = mesesage_body
        mail(
            :bcc => @users_emails.join(','),
            :subject => @mesesage_subject,
            :body => @mesesage_body) do |format|
            format.html
        end
    end