NameError: uninitialized constant ViewComponent::Compiler

[kurt-mueller-osumc]

Steps to reproduce

1. Install the view_component gem, version 2.66
2. Run bin/rails db:seed

Expected behavior

It should seed the database.

Actual behavior

An error is thrown:

$ bin/rails db:seed
rails aborted!
NameError: uninitialized constant ViewComponent::Compiler

      ViewComponent::Compiler.mode = if Rails.env.development? || Rails.env.test?
                   ^^^^^^^^^^
Did you mean?  Complex
/workspace/web/config/environment.rb:5:in `<main>'
Tasks: TOP => db:seed => db:load_config => environment
(See full trace by running task with --trace)

System configuration

Rails version: 7.0.3.1

Ruby version: 3.1.2p20

Gem version: 2.66

[boardfish]

Hey @kurt-mueller-osumc! I've just tried to replicate this using our replicate-bug environment and failed to do so. In addition to the steps you provided, I added a config line that sets ViewComponent::Compiler.mode in config/environments/development.rb.

Can you provide any further details about the environment you're experiencing this in so that we can help to resolve it for you?

[kurt-mueller-osumc]

Hi Simon,

Thanks for the quick reply. I'm currently in the development environment. Could you tell me what was the line you added in development.rb? Thank you :)

[kurt-mueller-osumc]

I fixed this by downgrading view_component from 2.66 to 2.61.

[joelhawksley]

I also ran into this bug here: https://github.com/primer/view_components/runs/7842624213?check_suite_focus=true

[ineu]

Sorry for bumping the old thread, but this issue doesn't seem to be fixed. I see it in 3.0 as well:

=> Booting Puma
=> Rails 7.0.4.3 application starting in development
=> Run `bin/rails server --help` for more startup options
Exiting
/home/ineu/.gem/ruby/3.2.1/gems/view_component-3.0.0/lib/view_component/engine.rb:111:in `block in <class:Engine>': uninitialized constant ViewComp
onent::Compiler (NameError)

      ViewComponent::Compiler.mode = if Rails.env.development? || Rails.env.test?
                   ^^^^^^^^^^
Did you mean?  Complex

[ineu]

Ah, nevermind. It is fixed, but to make it work I needed to change the Gemfile from

gem 'view_component', require: 'view_component/engine'

to

gem 'view_component'

[sdkilbo]

Ah, nevermind. It is fixed, but to make it work I needed to change the Gemfile from

gem 'view_component', require: 'view_component/engine'

to

gem 'view_component'

Worked for me, thanks.