Method class_name undefined for Class object in Rails

Question

I am having an issue where class_name seems to work on something like

User.first.class.class_name locally but it seems to fail in production.

I am trying to figure out where class_name is defined (I am using it on something like Admin::User.first.name.class_name to return "User" since I want the demodulized class name.) Why would it not work on production?

Where can I see what module class_name is a part of?

stackoverflow.com/a/24832287/908842 - demodularized class name — Kalman
– Kalman, Commented Aug 4, 2016 at 19:51
undefined method class_name for #<Class::4539q5834905834> (some class object) — Jwan622
– Jwan622, Commented Aug 4, 2016 at 20:29

Deepak Mahakale · Accepted Answer · 2020-03-12 06:35:57Z

18

class_name method is defined by yard gem. it works only development env.

or

Check which module define class_name

User.method(:class_name).source_location

edited Mar 12, 2020 at 6:35

Deepak Mahakale

23.8k10 gold badges73 silver badges94 bronze badges

answered Dec 1, 2016 at 9:09

Jaehyun Shin

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