Using ice_cube Ruby gem in IRB

Question

I'm trying to use a Ruby gem called ice_cube in IRB, but it doesn't work:

[~]$ rvm gemset create ice
'ice' gemset created (/home/joe/.rvm/gems/ruby-1.9.2-p320@ice).

[~]$ rvm gemset use ice
Using ruby-1.9.2-p320 with gemset ice

[~]$ gem install ice_cube
Fetching: ice_cube-0.8.0.gem (100%)
Successfully installed ice_cube-0.8.0
1 gem installed
Installing ri documentation for ice_cube-0.8.0...
Installing RDoc documentation for ice_cube-0.8.0...

[~]$ irb --simple-prompt
>> require 'ice_cube'
=> true

>> schedule = Schedule.new(Time.now)
NameError: uninitialized constant Object::Schedule
    from (irb):2
    from /home/joe/.rvm/rubies/ruby-1.9.2-p320/bin/irb:16:in `<main>'

What am I doing wrong? (I'm a beginner Ruby programmer.)

score 15 · Accepted Answer · answered Jul 17 '12 at 19:14

15

It should be:

schedule = IceCube::Schedule.new(Time.now)

answered Jul 17 '12 at 19:14

Asher Walther

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Much of the documentation for the gem doesn't make this clear. – Asher Walther Jul 17 '12 at 19:16
Agreed. Pretty glaring oversight – stuartchaney Jan 28 '14 at 05:18
See below... it is mentioned in the documentation. – Matteo Mar 31 '16 at 19:35

score 3 · Answer 2 · answered Aug 04 '13 at 04:24

3

include IceCube
schedule = Schedule.new(Time.now)

Or you can first include the module into global namespace, then you can use whatever it is in that module.

answered Aug 04 '13 at 04:24

Simon Polak

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score 0 · Answer 3 · answered Jul 23 '14 at 06:43

0

Had similar issue, Try Restarting your Rails Application.

answered Jul 23 '14 at 06:43

Ronak Jain

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Using ice_cube Ruby gem in IRB

3 Answers3