Overwriting methods in a module

Question

I am using a gem in my rails app, and there is a method that I would like to override. The gam is authlogic, and the specific method I was to override is find_by_smart_case_login_field(login).

I made a file in lib/modules with the following code:

# lib/modules/login.rb module Authlogic module ActsAsAuthentic module Login module Config def find_by_smart_case_login_field(login) login = login.downcase unless validates_uniqueness_of_login_field_options[:case_sensitive] if login_field where({ login_field.to_sym => login }) else where({ email_field.to_sym => login }) end end end end end end

But this didn't do anything. Does anyone know how to overwrite the above method?

Billy Chan · Accepted Answer · 2013-07-01 19:12:04Z

Well, you are monkey patching a gem. Not bad, just don't abuse it:)

Two things you need to do before making your monkey patching works.

Add /lib to auto load path otherwise Rails don't know it.

In config/application.rb, find the autoload_path line, change it to
```
config.autoload_paths += %W(#{config.root}/extras #{config.root}/lib) 
```
Require your custom module at app loading.

In config/initializers, add a custom file say application.rb, then add the following line
```
require 'modules/login.rb' # Pay attention: No "lib/" before the file path 
```

Now, profit!

As to module path, it doesn't matter as long as your module nesting is correct in the file.

Jason Swett · Accepted Answer · 2013-07-01 19:03:40Z

0

I'm going out on a limb here, but my guess would be that you'd have to name the file something like

lib/authlogic/acts_as_authentic/login/config.rb

In other words, I believe the path has to map to the module structure.

answered Jul 1, 2013 at 19:03

Jason Swett

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1 Comment

Jason Swett Over a year ago

Also, you may want to temporarily toss in a raise "foo" or something like that, just to be sure that the problem is that your code isn't being exercised, as opposed to the problem being that the code isn't doing what you expect.

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