CODEWITHSUNDEEP
ruby-on-railsrubyconfig
Sarun Sermsuwan
Sarun Sermsuwan

Reputation: 3818

ruby-on-rails initializer not working in irb, but working when running app normally

I have an idea to write up a small redis wrapper lib for my side project. everything has been looking just great so far. now, I'm trying to bring polish to my configuration, which I'm a little inspired by configuration block code from airbrake project, reference article here

From the start, I got myself rolling immediately to write up the wrapper class and I managed to do so in a timely manner. Up to this point, what I need to do is I'd like to be able to test my configuration code block (config/initializers/redis_cli.rb) in irb or pry.
I'm not sure why my initialisation code, which is placed under rails project config/initializers, is not working in such debugging console environment.

as soon as I instantiated my RedisCli class in the console as to =>

 RedisCli.new

I got an error saying that "NoMethodError: undefined method host' for nil:NilClass from /Users/admin/rails_projects/redis_app/lib/redis_cli.rb:44:inredis_wrapper_options'"

In contrast, it works just great when running on internal web server, web brick. It seems like my RedisCli initializer didn't get loaded properly in irb.

here is my code:

lib/redis_cli.rb

class RedisCli


  attr_accessor :host,:port,:db,:url,:queue

  class << self
    attr_accessor :configuration
  end

  def self.configure
    self.configuration ||= Configuration.new
    yield(configuration)
  end  

  class Configuration
    attr_accessor :host,:port,:db,:queue

    def initialize

    end
  end 

  def initialize(options={})
    options = redis_wrapper_options(options)
    @host = options[:host]
    @port = options[:port]
    @db = options[:db]
    @queue = options[:queue]
  end

  def url
    @url ||= [@host,@port].reject(&:blank?).join(":") if @url.blank?
    @url       
  end

  def lpush(klass,args)
    redis = Redis.new(:url => url)
    msg = { 'class' => klass,'args' =>  [args],'jid' => SecureRandom.hex(12), 'retry' => true, 'enqueued_at' => Time.now.to_f }
    redis.lpush(@queue,JSON.dump(msg))
  end

  def redis_wrapper_options(overrides = {})      
    {
      :host  => RedisCli.configuration.host,
      :port => RedisCli.configuration.port,    
      :db => RedisCli.configuration.db,        
      :queue   => RedisCli.configuration.queue

    }.merge(overrides || {}).delete_if { |key, value| value.nil? }
  end

end

and my initializer:

config/initializers/redis_cli.rb

RedisCli.configure do |config|
  config.host    = 'redis://localhost'       
  config.port    = '6379'       
  config.db      = ''       
  config.queue   = 'queue:default'                      
end

Could anyone bring me to light on this?

Upvotes: 2

Views: 965

Answers (1)

Tyler
Tyler

Reputation: 19848

This was happening to me as well on Rails 5.1.4

The only thing that worked for me was to completely exit Terminal.app, relaunch Terminal.app, and then re-run rails c. Rails Console took about 4-5 seconds longer to initialize than it did before I restarted terminal. It appears that there is some sort a caching going on but that is just a hunch.

Upvotes: 2

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