Support for Third Party Component Libraries (ViewComponent)

[mc962]

Will there be any issues with Hamlit supporting Third Party Component libraries such as github's view_component library?

I have been looking at hamlit for a project, while also following recent Rails developments concerning integrating third-party component libraries such as described in the rails/rails#36388 PR.

From reading the description of both the Rails PR and view_component, it seems like they will support haml, and it seems like in general if haml is supported then hamlit will be supported.
But I want to confirm if there might be issues with integrating hamlit with component libraries, when they are supported/released in Rails.

[k0kubun]

Looking at TestComponent in rails/rails#36388, that seems totally feasible.

In that example, I think it should work by just changing ActionView::Template::Handlers::ERB.erb_implementation.new(template, trim: true).src to Hamlit::RailsTemplate.call(template).

Let me close this as I'm still not sure what should be done in hamlit.gem side, but please reopen this if you have ideas of things to be done here.

[mc962]

I'm not sure what may have been updated in the 6 or so months since this issue was opened, but I just tried to make ViewComponent with a project that uses hamlit, and it seemed to render/behave fine.

It was a limited, initial test, so there might be unknown issues that I have not yet come across, but it seems like ViewComponent is cooperating fine with hamlit these days, with just following the instructions to install from ViewComponent's page.

[joevandyk]

I'm trying to use haml_tag inside a viewcomponent template and getting undefined method 'haml_tag' errors

(didn't get the error with haml)

[k0kubun]

It's intentional that Hamlit doesn't offer most of Haml's helpers like haml_tag. REFERENCE.md says it's under development, but it's actually a wont-fix at this point. If you're using Rails, you should be able to use content_tag. Even if it doesn't work or even exist, you should be able to define such a helper or look for such a gem yourself. Helpers in a rendering context are something template engines shouldn't care about, e.g. Slim and ERB don't, because it requires monkey-patching to achieve it with Ruby code compiled from a template. It should be the responsibility of other libraries at a proper layer.

(didn't get the error with haml)

Note that Haml is going to remove haml_tag too. If you use the main branch of haml/haml, you cannot use haml_tag.