no argument named 'user_names'

base_page.cr

# src/pages/base_page.cr
abstract class BasePage
  include LuckyWeb::HTMLPage

  def render
    html lang: "en" do
      head do
        utf8_charset
        title page_title
        css_link asset("css/app.css")
        js_link asset("js/app.js")
      end

      body do
        inner
      end
    end
  end

  abstract def inner

  def page_title
    "Default title"
  end
end

index_page.cr

# src/pages/users/index_page.cr
class Users::IndexPage < BasePage
  needs user_names : Array(String)

  def inner
    ul class: "my-user-list" do
      @user_names.each do |name|
        li name, class: "user-name"
      end
    end
  end

  def page_title
    "List of users"
  end
end

users_index.cr

# src/actions/users/index.cr
class Users::Index < BrowserAction
  action do
    render user_names: ["Paul", "Sally", "Jane"]
  end
end

Getting:

23:36:04 web.1      |     1.     def call : LuckyWeb::Response
23:36:04 web.1      |     2.       callback_result = run_before_callbacks
23:36:04 web.1      |     3.
23:36:04 web.1      |     4.       response = if callback_result.is_a?(LuckyWeb::Response)
23:36:04 web.1      |     5.         callback_result
23:36:04 web.1      |     6.       else
23:36:04 web.1      |  >  7.         render(user_names: ["Paul", "Sally", "Jane"])
23:36:04 web.1      |     8.       end
23:36:04 web.1      |     9.
23:36:04 web.1      |    10.       callback_result = run_after_callbacks
23:36:04 web.1      |    11.
23:36:04 web.1      |    12.       if callback_result.is_a?(LuckyWeb::Response)
23:36:04 web.1      |    13.         callback_result
23:36:04 web.1      |    14.       else
23:36:04 web.1      |    15.         response
23:36:04 web.1      |    16.       end
23:36:04 web.1      |    17.     end
23:36:04 web.1      |    18.
23:36:04 web.1      |  expanding macro
23:36:04 web.1      |  in macro 'render' /Users/ugisozols/sandbox/crystal/testy/lib/lucky_web/src/lucky_web/renderable.cr:16, line 1:
23:36:04 web.1      |  >  1.     view = Users::IndexPage.new(
23:36:04 web.1      |     2.
23:36:04 web.1      |     3.         user_names: ["Paul", "Sally", "Jane"],
23:36:04 web.1      |     4.
23:36:04 web.1      |     5.
23:36:04 web.1      |     6.     )
23:36:04 web.1      |     7.     log_html_render(context, view)
23:36:04 web.1      |     8.     body = view.render.to_s
23:36:04 web.1      |     9.     LuckyWeb::Response.new(context, "text/html", body)
23:36:04 web.1      |    10.
23:36:04 web.1      |  no argument named 'user_names'
23:36:04 web.1      |  Matches are:
23:36:04 web.1      |   - Reference.new()