application_controller.rb

# app/controllers/subscriptions/application_controller.rb

class Subscriptions::ApplicationController < ApplicationController
   def steps_provider
     # current_step est défini dans chaque controller
    @steps_provider ||= StepsProvider.new(@subscription, current_step)
  end
  helper_method(:steps_provider)

  def subscription_steps
    steps_provider.steps
  end
  helper_method(:subscription_steps)
end

base_step.rb

# app/steps/base_step.rb

class BaseStep
  include Rails.application.routes.url_helpers

  attr_reader :name

  def initialize(subscription, name)
    @subscription = subscription
    @name = name
  end

  def link
    # Route de l'étape
    "#"
  end

  def visible?
    true
  end

  def completed?
    # Définir la logique pour vérifier si l'étape est complétée, ou mieux, mettre la policy associée à l'étape
    false
  end
end

breadcrumb.html.erb

<!-- app/views/subscriptions/partials/_breadcrumb.html.erb -->

<% subscription_steps.each do |step| %>
  <li>
    <% if step.completed? %>
      <%= inline_svg_tag("subscriptions/breadcrumb/valid_or_current_step.svg") %>

      <%= link_to(
        t(".#{step.name}"),
        step.link,
        class: class_names(
          "fw-bold" => step.name == steps_provider.current_step.name
        )
      ) %>
    <% else %>
      <%= inline_svg_tag("subscriptions/breadcrumb/step_to_complete.svg") %>
      <span><%= t(".#{step.name}") %></span>
    <% end %>
  </li>
<% end %>

steps_provider.rb

# app/providers/steps_provider.rb

class StepsProvider
  def initialize(subscription, current_step_name)
    @subscription = subscription
    @current_step_name = current_step_name
  end

  def steps
    @__steps ||= steps_list.select(&:visible?)
  end

  private

  def steps_list
    [
      UserDetailsStep.new(@subscription, :user_details_step),
      # Ajoutez d'autres étapes ici en suivant le modèle ci-dessus
    ]
  end
end

user_information_step.rb

# app/steps/user_information_step.rb

class UserDetailsStep < BaseStep
  def step_link
    edit_subscriptions_user_details_path(@subscription)
  end

  def completed?
    @subscription.user.extend(UsersDetailsValidation).valid?
  end
end