How to pass arguments back to slot content blocks?

[andrewhavens]

This is a contrived example, but it demonstrates what I'm trying to do. I've tried to figure out how to solve this and can't figure out a way.

<%= render MyFormWrapperComponent.new do |c| %>
  <% c.with_form_fields do |form| %>
    <%= form.text_field :name %>
  <% end %>
<% end %>

class MyFormWrapperComponent.new < ViewComponent::Base
  renders :form_fields
end

<%= form_with(...) do |form| %>
  <% if form_fields? %>
    <%= form_fields.call(form) %>
  <% end %>
<% end %>

[andrewhavens]

Ahhh! I figured out how to do it. The trick is to use a lambda slot and return the result of calling the block.

class MyFormWrapperComponent.new < ViewComponent::Base
  renders :form_fields, -> (&block) do
    form_fields_content = nil
    form_with(...) do |form|
      form_fields_content = block.call(form)
   end
    form_fields_content
  end
end

<%= form_with(...) do |form| %>
  <% if form_fields? %>
    <%= form_fields %>
  <% end %>
<% end %>