Question

i have a problem with saving 2 items in db at one moment(i am using rails 3.1). I have model Message

class Message < ActiveRecord::Base
  belongs_to :user
  validates_presence_of :content
end

Message model have params: user_id(reciever), user_from(sender), and content(text)

and model User is

class User < ActiveRecord::Base
  has_many :posts
  has_many :messages
end

in MessagesController i have method

 def create
  @message =Message.new(params[:message])


  User.find(@message.user_id).messages.build(params[:message])
  User.find(@message.user_from).messages.build(params[:message])
  end

and the problem is that User.find(@message.user_id) only have this message , user_from dont have. I even have tryed this User.find(2).messages.build(params[:message]) instead of User.find(@message.user_from).messages.build(params[:message]) and user with id 2 dont have this message too, only user with user_id have. what i am doing wrong??

Thanks in advance

Answer 1

Use create rather than build.

build is used when you want to create an model instance but don’t want to save it immediately. In your case the message instances are being created but not saved.