Rails 6.0 uninitialized constant StripeEvent (NameError)

[tbcooney]

I've been running into this issue more frequently the past few weeks, ever since I first implemented my Stripe work to handle subscriptions. Here is a trace of me trying to create a new controller.

ruby '2.6.3'
gem 'rails', '~> 6.0'
gem 'stripe_event', '~> 2.2'

Trace

rails g controller two_factors
/Users/taylorcooney/code/openunit/config/routes.rb:2:in `block in <main>': uninitialized constant StripeEvent (NameError)
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/actionpack-6.0.0.rc2/lib/action_dispatch/routing/route_set.rb:429:in `instance_exec'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/actionpack-6.0.0.rc2/lib/action_dispatch/routing/route_set.rb:429:in `eval_block'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/actionpack-6.0.0.rc2/lib/action_dispatch/routing/route_set.rb:411:in `draw'
    from /Users/taylorcooney/code/openunit/config/routes.rb:1:in `<main>'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:54:in `load'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/bootsnap-1.4.4/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:54:in `load'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0.rc2/lib/rails/application/routes_reloader.rb:41:in `block in load_paths'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0.rc2/lib/rails/application/routes_reloader.rb:41:in `each'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0.rc2/lib/rails/application/routes_reloader.rb:41:in `load_paths'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0.rc2/lib/rails/application/routes_reloader.rb:20:in `reload!'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0.rc2/lib/rails/application/routes_reloader.rb:30:in `block in updater'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/file_update_checker.rb:83:in `execute'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0.rc2/lib/rails/application/routes_reloader.rb:10:in `execute'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/railties-6.0.0.rc2/lib/rails/application/finisher.rb:197:in `block (2 levels) in <module:Finisher>'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:429:in `instance_exec'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:429:in `block in make_lambda'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:201:in `block (2 levels) in halting'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:607:in `block (2 levels) in default_terminator'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:606:in `catch'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:606:in `block in default_terminator'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:202:in `block in halting'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:514:in `block in invoke_before'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:514:in `each'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:514:in `invoke_before'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/callbacks.rb:134:in `run_callbacks'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.taylorcooney@CANTORJSW1-ML:~/code/openunit$ ⚡
0.0.rc2/lib/active_support/execution_wrapper.rb:111:in `run!'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/reloader.rb:114:in `run!'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/reloader.rb:53:in `block (2 levels) in reload!'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/reloader.rb:52:in `tap'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/reloader.rb:52:in `block in reload!'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/execution_wrapper.rb:88:in `wrap'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/activesupport-6.0.0.rc2/lib/active_support/reloader.rb:51:in `reload!'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/application.rb:168:in `serve'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/application.rb:145:in `block in run'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/application.rb:139:in `loop'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/application.rb:139:in `run'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/gems/2.6.0/gems/spring-2.1.0/lib/spring/application/boot.rb:19:in `<top (required)>'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from /Users/taylorcooney/.rbenv/versions/2.6.3/lib/ruby/2.6.0/rubygems/core_ext/kernel_require.rb:54:in `require'
    from -e:1:in `<main>'

[rmm5t]

This appears to be coming from your config/routes.rb file. Would you mind sharing the relevant portion that references StripeEvent in that file? Is it more than just something like:

Rails.application.routes.draw do
  # ...
  mount StripeEvent::Engine => "/webhooks/stripe"
  # ...
end

I don't have a Rails 6 project that uses StripeEvent at the moment.

If for some reason the autoloader isn't finding StripeEvent, you should be able to add a require statement to the top of your routes.rb:

require "stripe_event"

Worst case, if there's some other load order issue, you might need to add a more explicit require statement at the top of your routes.rb:

require "stripe_event/engine"

Of course, I wouldn't expect either of these requires to be necessary either.

[tbcooney]

Hey @rmm5t - I've got StripeEvent mounted in the same way you referenced above. Let me add in a require and report back. To explain a little more, I'll try to start a console bundle exec rails c and I will get a uninitialized constant StripeEvent (NameError) error with the same trace above. I'll run the same bundle exec rails c command right after and it works.

[umar221b]

I am running into the same issue when I run rails routes.

My setup is as follows:

ruby: 2.7.1
rails: 6.1.1
stripe_event: 2.3.1

config/routes.rb:

Rails.application.routes.draw do
  mount Spree::Core::Engine, at: '/'

  mount StripeEvent::Engine at: '/stripe/hook'
end

Spree::Core::Engine.routes.draw do
 # more routes
end

Adding the require statements continued to show the same error.

Here is a trace:

$ rails routes
DEPRECATION WARNING: SolidusSupport::EngineExtensions::Decorators is deprecated! Use SolidusSupport::EngineExtensions instead. (called from <main> at /Users/umar/some_project/config/application.rb:20)
Traceback (most recent call last):
    58: from bin/rails:4:in `<main>'
    57: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
    56: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
    55: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
    54: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
    53: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
    52: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
    51: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
    50: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
    49: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/commands.rb:18:in `<main>'
    48: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/command.rb:50:in `invoke'
    47: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/command/base.rb:69:in `perform'
    46: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/thor-1.0.1/lib/thor.rb:392:in `dispatch'
    45: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/thor-1.0.1/lib/thor/invocation.rb:127:in `invoke_command'
    44: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/thor-1.0.1/lib/thor/command.rb:27:in `run'
    43: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/commands/routes/routes_command.rb:13:in `perform'
    42: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/command/actions.rb:15:in `require_application_and_environment!'
    41: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/command/actions.rb:28:in `require_environment!'
    40: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application.rb:360:in `require_environment!'
    39: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `require'
    38: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:299:in `load_dependency'
    37: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/activesupport-6.1.1/lib/active_support/dependencies.rb:332:in `block in require'
    36: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/zeitwerk-2.4.2/lib/zeitwerk/kernel.rb:34:in `require'
    35: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/polyglot-0.3.5/lib/polyglot.rb:65:in `require'
    34: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:31:in `require'
    33: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:22:in `require_with_bootsnap_lfi'
    32: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/loaded_features_index.rb:92:in `register'
    31: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `block in require_with_bootsnap_lfi'
    30: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:23:in `require'
    29: from /Users/umar/some_project/config/environment.rb:5:in `<main>'
    28: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application.rb:384:in `initialize!'
    27: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/initializable.rb:60:in `run_initializers'
    26: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:205:in `tsort_each'
    25: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:226:in `tsort_each'
    24: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:347:in `each_strongly_connected_component'
    23: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:347:in `call'
    22: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:347:in `each'
    21: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:349:in `block in each_strongly_connected_component'
    20: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:431:in `each_strongly_connected_component_from'
    19: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:350:in `block (2 levels) in each_strongly_connected_component'
    18: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/2.7.0/tsort.rb:228:in `block in tsort_each'
    17: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/initializable.rb:61:in `block in run_initializers'
    16: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/initializable.rb:32:in `run'
    15: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/initializable.rb:32:in `instance_exec'
    14: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application/finisher.rb:195:in `block in <module:Finisher>'
    13: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application/routes_reloader.rb:10:in `execute'
    12: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/activesupport-6.1.1/lib/active_support/file_update_checker.rb:83:in `execute'
    11: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application/routes_reloader.rb:35:in `block in updater'
    10: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application/routes_reloader.rb:21:in `reload!'
     9: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application/routes_reloader.rb:47:in `load_paths'
     8: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application/routes_reloader.rb:47:in `each'
     7: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/railties-6.1.1/lib/rails/application/routes_reloader.rb:47:in `block in load_paths'
     6: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:59:in `load'
     5: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/bootsnap-1.5.1/lib/bootsnap/load_path_cache/core_ext/kernel_require.rb:59:in `load'
     4: from /Users/umar/some_project/config/routes.rb:3:in `<main>'
     3: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/actionpack-6.1.1/lib/action_dispatch/routing/route_set.rb:409:in `draw'
     2: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/actionpack-6.1.1/lib/action_dispatch/routing/route_set.rb:427:in `eval_block'
     1: from /Users/umar/.rbenv/versions/2.7.1/lib/ruby/gems/2.7.0/gems/actionpack-6.1.1/lib/action_dispatch/routing/route_set.rb:427:in `instance_exec'
/Users/umar/some_project/config/routes.rb:19:in `block in <main>': undefined method `Engine' for StripeEvent:Module (NoMethodError)