ruby - Rails customize class Gem -

i reopened gem class in rails app, seems ok, runs nicely after few minutes, seems app forgot modifications:

config/initializers/rapidfire_custom.rb

::rapidfire::survey.class_eval    belongs_to :campaign, class_name: '::campaign', inverse_of: :survey    before_create :default_active   before_validation :default_status, :default_name    status = ['draft', 'published']   validates_inclusion_of :status, in: status   validates :name, presence: true    scope :from_company, -> (id) { where(company_id: id) }   scope :template, -> { where(campaign_id: nil) }   scope :published, -> { where(status: 'published') }    def default_active     self.active ||= true   end    def default_status     self.status ||= 'draft'   end    def self.all_status     status   end    def default_name     if self.campaign       self.name = 'survey'     end   end  end 

the error:

undefined method `template' #<rapidfire::survey::activerecord_associationrelation:0x007fc762215ad0> 

it happens on development, i'm using puma:

config/puma.rb

workers integer(env['web_concurrency'] || 2) threads_count = integer(env['max_threads'] || 5) threads threads_count, threads_count  preload_app!  rackup      defaultrackup port        env['port']     || 3000 environment env['rack_env'] || 'development'  if env['rack_env'].nil? || env['rack_env'] == 'development'   ssl_bind 'my_website.dev', '3000', { key: 'ssl/device.key', cert: 'ssl/device.crt' } end  on_worker_boot   activerecord::base.establish_connection   $redis.client.reconnect end 

i don't know what's going on, idea ?

thanks

i'm guessing when activerecord instantiates rapidfire::survey records loads class gem - nullifies changes have done class eval in initializer.

monkey-patching objects not belong should done if need override library method , there no better way.

you need consider when , class eval happens - initializers run when rails app loading while model classes lazy loaded when activerecord needs them. using initializer configure model not idea.

using inheritance correct thing here - you're creating own domain object.