current_user helper in components?

[danturu]

How could I make current_user available in all components without passing it each time? include ApplicationHelper doesn't work.

P.S. I use Sorcery.

[skyksandr]

Current attributes can be a solution. More info here:
https://api.rubyonrails.org/classes/ActiveSupport/CurrentAttributes.html

[danturu]

@skyksandr thank you, but I'd prefer not to use them.

[joelhawksley]

@rosendi currently, we're explicitly passing in the values we need to render our components. I'd be curious to hear what you come up with on your end, though.

[joelhawksley]

Closing this issue due to staleness. Feel free to reopen if desired ❤️

[danturu]

I think we should find a way :-) Technically yes - we have to pass all the values (props) we need to render a component, but helpers are more like utilities. In React I would import them and use directly:

import projectPath from '....';

const ProjectItem = ({ project }) => (
  <Link to={project_path(project)}>Go to project</Link>
} 

Currently if I define a helper in a controller, I have to compute its value and explicitly pass it via attributes.

Let's say I have a polymorphic controller (real-world example) for comments. Users can comment posts and images.

module Post
  class CommentsController < CommentsController
    helper_method :edit_comment_path

    def edit_comment_path(comment, *args)
      edit_post_comment_path(subject, comment, *args)
    end

  private

      def subject
        @subject ||= Post.find(...)
      end
  end
end

module Image
  class CommentsController < CommentsController
    helper_method :edit_comment_path

    def edit_comment_path(comment, *args)
      edit_image_comment_path(subject, comment, *args)
    end

  private

      def subject
        @subject ||= Comment.find(...)
      end
  end
end

My comment's component should be decoupled from post, image, etc. Currently I do:

<%= render Comment, comment: comment, edit_comment_path: edit_comment_path(comment) %>

but I think this way should work too:

<%= render Comment, comment: comment %>

and the html of the comment's component then would be:

<%= link_to 'Edit comment', edit_comment_path(comment) %>

[danturu]

@joelhawksley Hello! It's been a while. Do you still pass all helpers explicitly? It sounds like a non-rails way to pass all current_* such as current_user, current_organization, current_project, etc..

[danturu]

ahhh....

[joelhawksley]

@rosendi currently, we do inject the current state explicitly, as doing so enables us to change that state in unit tests.

You can also use the helpers. escape hatch, but it will make your components more difficult to unit test.