uninitialized constant ViewComponent

[iamdriz]

Expected behavior

Installed view_component in the Gemfile (so it's definitely installed). And should be able to create components.

Actual behavior

ViewComponent doesn't seem to be being loaded in Rails as we get uninitialized constant ViewComponent

Not really sure where the problem is and what to try next... uninstalled the gem and re-installed it but same error.

Backtrace:

System configuration

Rails version: 6.1.7.6

Ruby version: 3.2.2

Gem version: 3.10.0

[iamdriz]

Seems the generator is broken as well:

bin/rails generate component Example title

As it returns the following error:

[WARNING] Could not load generator "rails/generators/component/component_generator". Error: uninitialized constant ViewComponent::Base.

Could it be an issue with the autoloading of the gem?

[iamdriz]

So I fixed it by adding require 'view_component' to application.rb

However I don't see any mention of having to do this in the installation guide... unless I missed it?

Would seem there's some auto load failing and then it requiring a manual load as I've done here.

[zulkufdemirhan]

So I fixed it by adding require 'view_component' to application.rb

However I don't see any mention of having to do this in the installation guide... unless I missed it?

Would seem there's some auto load failing and then it requiring a manual load as I've done here.

no need to add require 'view_component' to application.rb

[Spone]

Hi @iamdriz that's weird. Can you double check the version of view_component in Gemfile.lock? Also, are you using the classic or zeitwerk mode? (See this guide)

[reeganviljoen]

@iamdriz do you have any further feedback on this issue, so that we know if this is still a bug on the view_component side or not

[iamdriz]

@Spone Its 3.10.0. I've not specified a version and I'm running Rails 6.1 so it should be defaulting to zeitwork in 6. It's defo loading the defaults from 6.1 as I have this in my application.rb, config.load_defaults 6.1

I also just ran: bin/rails runner 'p Rails.autoloaders.zeitwerk_enabled?' which prints true.

@iamdriz No I'm still having to manually require view_component in the application.rb file.

[iamdriz]

I'm looking at updating the app to 7.1 soon so will see if that fixes the issue.

[igillis-clara]

Did upgrading to 7.1 fix for you?

I just added ViewComponent to my 7.1 app, following the directions in the guide and got the same error. Edit: was just being dumb -- needed to restart server after installation

[reeganviljoen]

@iamdriz any further feedback