Move to scope and inline method

app/models/card/multistep.rb

@@ -4,8 +4,4 @@ module Card::Multistep
   included do
     has_many :steps, dependent: :destroy
   end
-
-  def completed_steps_count
-    steps.where(completed: true).count
-  end
 end

app/models/step.rb

@@ -1,6 +1,8 @@
 class Step < ApplicationRecord
   belongs_to :card, touch: true
 
+  scope :completed, -> { where(completed: true) }
+
   def completed?
     completed
   end

app/views/cards/display/preview/_steps.html.erb

@@ -3,6 +3,6 @@
     <span class="steps__icon">
       <%= icon_tag "check" %>
     </span>
-    <strong><%= "#{card.completed_steps_count}/#{card.steps.count}" %></strong>
+    <strong><%= "#{card.steps.completed.count}/#{card.steps.count}" %></strong>
   </div>
 <% end %>