CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-3activerecord
user2158382
user2158382

Reputation: 4510

Rails: Manipulate active record object without saving

I have an ActiveRecord object that I want to manipulate without saving to the database. When I try to manipulate it using setters, it turns into an array and I can't call anymore ActiveRecord methods on it anymore. Is there a way to prevent against this.

Here is my situation:

I have a model Server, and I want to create a method that returns all Server records, sets a attribute called imported to false, then returns the ActiveRecord list of all Servers with their newly updated imported attribute, all without changing the database.

Here is what I have

def servers_imported
  servers = Servers.all
  servers.each do |server|
    server.imported = false
  end
  servers
end

My solution effectively changes the imported attributes of all the Servers without actually saving this change to the database. However, the return value servers is an array and not an ActiveRecord object. I need it to be an ActiveRecord object because I need to use additional methods.

Upvotes: 0

Views: 1429

Answers (1)

dx7
dx7

Reputation: 812

When you call servers = Server.all you get an array of active record objects. You iterate this collection and return this array. The servers variable is a collection all the time. If you need to use additional methods on active record objects you need iterate it again.

def servers_imported
  servers = Servers.all
  servers.each do |server|
    server.imported = false
  end
  servers
end

my_servers = servers_imported
my_servers.each do |server|
  server.my_pretty_method
end

Upvotes: 1

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