Ruby get methods defined in codebase

Question

I'm trying to get a list of the methods defined in our Rails codebase, without including anything defined in superclass or dynamically defined at runtime. I've tried instance_methods(false), but a ton of methods are returned:

> User.instance_methods(false).length
=> 310

I'm guessing this is because Rails defines a bunch of methods at runtime. Is there any way to get a list of the methods only defined in the files in our app? Hoping there's a Ruby way and not just running a grep across all of the files. Bonus points for class methods as well...

If it inherits from ActiveRecord::Base, you might try User.methods.sort - ActiveRecord::Base.methods — nohat
– nohat, Commented Jan 28, 2014 at 3:01
The problem is that ActiveRecord generates a lot of methods in its subclasses based on the database attributes: (User.instance_methods(false) - ActiveRecord::Base.instance_methods(false)).size # => 310 — lobati
– lobati, Commented Jan 28, 2014 at 6:23

Nikolay · Accepted Answer · 2014-01-28 03:21:34Z

1

User.instance_methods will show all the inherited methods as well, so you should run something like that

User.instance_methods - User.superclass.instance_methods

Be ware thought that it will show heaps of other methods that are generated by AR when you inherited the ActiveRecord::Base class

answered Jan 28, 2014 at 3:21

Nikolay

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lobati Over a year ago

.instance_methods(false) excludes superclass methods: ruby-doc.org/core-2.0.0/Module.html#method-i-instance_methods

Johannus Vogel · Accepted Answer · 2018-01-17 08:39:03Z

0

Use MyClass.instance_methods(false), but make sure to pass false as an argument if you don't want it to return the methods defined in the superclasses.

Additionally, use MyClass.singleton_methods(false) for class methods.

More info:

answered Jan 17, 2018 at 8:39

Johannus Vogel

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