Question

I’m trying to create an email which is sent when admin click to active account for user

user has_one :account and account belongs_to :user

in user.rb

devise :database_authenticatable, :registerable, :Trackable, :rememberable, :recoverable
attr_accessible :account, :email, :password, :password_confirmation, :account_attributes, :approved

has_one :account

end

in account.rb

class Account < ActiveRecord::Base

  attr_accessible :address, :approved, :name
  belongs_to :user

end

in accounts_controller.rb

def activate
  @accounts = Account.find(params[:id])
  @users = User.where(:id => @accounts.id)
  if (@accounts.update_attributes(approved: true)) && (@users.update_all(approved: true))
   AccountMailer.activate_account(@users).deliver   
   redirect_to accounts_path
  else
   redirect_to accounts_path
  end 
end

in account_mailer.rb

class AccountMailer < ActionMailer::Base
  default :from => "[e-mail]"

  def activate_account(user)
    @users = user   
        @account = account.find_by_user_id(user)
    mail(:to => user.email, :subject => "Activation Account", :from => "[e-mail]")
  end
end

in account_mailer/activate_account.text.erb

congratulation, your account is active now

setup_mailer.rb

ActionMailer::Base.smtp_settings = {
  :address              => "smtp.gmail.com",
  :port                 => 587,
  :domain               => "localhost:3000",
  :user_name            => "[e-mail]",
  :password             => "password",
  :authentication       => "plain",
  :enable_starttls_auto => true
}

but an email not send to email user, and no error..
these did not happened to any other action.

Any suggestions as to what I am doing wrong?

UPDATE 1

in accounts_controller.rb

def activate
  @account = Account.find(params[:id])
  @user = User.where(:id => @account.id)
  if (@account.update_attributes(approved: true)) && (@user.update_all(approved: true))
   AccountMailer.activate_account(@user,@account).deliver   
   redirect_to accounts_path
  else
   redirect_to accounts_path
  end 
end

in account_mailer.rb

class AccountMailer < ActionMailer::Base
default :from => "[e-mail]"

  def activate_account(user,account)
    @account = account
    @accounts = Account.find_by_user_id(user)
    mail(:to => user.email, :subject => "Activation", :from => "[e-mail]")
  end

end

error

undefined method `email' for #<ActiveRecord::Relation:0x3e7c720>

Answer 1

in accounts_controller.rb

def activate
  @account = Account.find(params[:id])
  @user = User.where(:id => @account.id)
  if (@account.update_attributes(approved: true)) && (@user.update_all(approved: true))


    user_account = account.find_by_user_id(@user)
    AccountMailer.activate_account(@user,user_account,@account.user.mail).deliver 
    redirect_to accounts_path
  else
    redirect_to accounts_path
  end 
end

in account_mailer.rb

class AccountMailer < ActionMailer::Base
  default :from => "[e-mail]"

  def activate_account(user,account,to)
    @users = user   
    @account = account
    mail(:to => to, :subject => "Activation Account",  :from=>"[e-mail]")
  end
end

The above will work for sure.