CODEWITHSUNDEEP
ruby-on-railsomniauth
Kannaiyan
Kannaiyan

Reputation: 13055

Ruby on Rails - Could not find matching strategy for :google_oauth2

I have got 

gem 'omniauth-google_oauth2'

in my Gemfile. Did bundle install after that as well. It errors out saying,

ruby-1.9.3-p0/gems/omniauth-1.0.2/lib/omniauth/builder.rb:33:in `rescue in provider': Could not find matching strategy for :google_oauth2. You may need to install an additional gem (such as omniauth-google_oauth2). (LoadError)

What am I missing? Any ideas please.

Upvotes: 7

Views: 4292

Answers (3)

Archonic
Archonic

Reputation: 5382

Using Ben W's solution made the server start-able but screws up how I was doing routes. I used this in config/initializers/omniauth.rb

:google_oauth2, "[KEY]", "[SECRET]"

My google auth path is then /auth/google_oauth2

Upvotes: 0

Ben Walding
Ben Walding

Reputation: 4064

The problem is caused by how OmniAuth camelizes the provider names:

OmniAuth::Utils.camelize(:google_oauth2.to_s) => GoogleOAuth2

However the provider is actually GoogleOauth2 - fully qualified - OmniAuth::Strategies::GoogleOauth2

So the solution is to use the fully qualified class: OmniAuth::Strategies::GoogleOauth2

Rails.application.config.middleware.use OmniAuth::Builder do
  provider OmniAuth::Strategies::GoogleOauth2, ENV["KEY"], ENV["SECRET"]
end

Upvotes: 8

mrmonroe
mrmonroe

Reputation: 325

Use 

gem 'omniauth-google-oauth2'

Change the last underscore to a hyphen.

Upvotes: 11

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