CODEWITHSUNDEEP
ruby-on-railsrubyruby-on-rails-4devise
AnthonyGalli.com
AnthonyGalli.com

Reputation: 2866

Devise raises error with Rails 4.2 upgrade

When I run rails s:

/Users/galli01anthony/.rvm/gems/ruby-2.1.3/gems/devise-3.2.4/lib/devise/rails/routes.rb:455:in
`ensure in with_devise_exclusive_scope': undefined method `merge!' for
#<ActionDispatch::Routing::Mapper::Scope:0x007f8743e19020> (NoMethodError)

When I run rake db:reset or db:migrate or db:setup:

rake aborted!
NoMethodError: undefined method `merge!' for #<ActionDispatch::Routing::Mapper::Scope:0x007fca8d3f2780>

Upvotes: 30

Views: 8343

Answers (3)

spickermann
spickermann

Reputation: 107077

It seems like the issue was fixed with this PR https://github.com/plataformatec/devise/pull/3153 a while ago. Update the devise gem in your application (if possible).

Change the version of devise in your Gemfile to at least 3.4.0:

gem 'devise', '~> 3.4.0'   # or later

Then run:

bundle update devise

Update: Devise was updated to version 3.5.x a while ago and 4.0 will be released soon (see all version on RubyGems.org). That said you may want to define at least a version 3.5.x in your Gemfile:

gem 'devise', '~> 3.5.0'

Or just load the newest version that is possible:

gem 'devise', '> 3.4'

follow by a bundle update devise

Upvotes: 70

Antonio Sito
Antonio Sito

Reputation: 11

It was still producing the error for me with devise 3.4.1.

Removing :confirmable in the User model fixed the problem.

Upvotes: 1

skilleo
skilleo

Reputation: 2481

recently updated https://github.com/plataformatec/devise/pull/3153#issuecomment-71185519

Gemfile

gem 'devise', github: 'plataformatec/devise'

Upvotes: 5

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