Using current_kase method in views

current.rb

# concerns#current

module Current
  extend ActiveSupport::Concern
  ...
  def current_kase
    @current_kase ||= Kase.find_by_id(params[:kase_id])
  end
  
  # To include methods in views
  def self.included m
    return unless m < ActionController::Base
    m.helper_method :current_user, :current_kase
  end
end


# sources#controller

def index
  # nothing here
end


# sources#index

<h1><%= current_kase.name %></h1>
<%= link_to "Add source", new_kase_source_path %>

<% if current_kase.sources.any? %>
  <% current_kase.sources.each do |source| %>
    <h3><%= link_to source.name, kase_source_path(current_kase, source) %></h3>
  <% end %>
<% end %>

Yep, perfect.

Annoying gotcha, but I think it's worth it.