unused image finder

app/controllers/merged/images_controller.rb

@@ -5,7 +5,7 @@ module Merged
     before_action :set_image, only: %i[ update destroy show scale crop copy ]
 
     def index
-      @images = Image.all
+      @images = get_images
       @image_data = @images.collect{|i|
         data = i.attributes.dup
         data[:url] = view_context.asset_path(i.asset_name)
@@ -65,6 +65,18 @@ module Merged
 
     private
 
+    def get_images
+      images = Image.all
+      puts "Images #{images.length}"
+      return images unless params[:unused]
+      hash = images.collect{|i| [i.id , i ] }.to_h
+      puts "Images1 #{hash.length}"
+      Section.all.each{ |s| hash.delete(s.image&.id)}
+      puts "Images2 #{hash.length}"
+      Card.all.each{ |s| hash.delete(s.image&.id)}
+      puts "Images3 #{hash.length}"
+      hash.values
+    end
     def set_image
       @image = Image.find(params[:id] || params[:image_id])
     end