Add sync_variations to Document model

app/models/cdn_file.rb

@@ -34,8 +34,8 @@ class CdnFile < ApplicationRecord
 
   # The owner can be an Image, Video or Document record.
   def owner
-    return image if image.present?
-    return video if video.present?
+    # return image if image.present?
+    # return video if video.present?
     return document if document.present?
 
     nil

app/models/document.rb

@@ -1,10 +1,44 @@
+# create_table "documents", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+#   t.string "path", null: false
+#   t.string "name"
+#   t.string "language_id"
+#   t.string "document_category_id"
+#   t.datetime "created_at", null: false
+#   t.datetime "updated_at", null: false
+#   t.string "variations"
+#   t.boolean "public", default: false
+# end
+
 class Document < ApplicationRecord
   belongs_to :document_category, optional: true
   alias_attribute :category, :document_category
 
-  has_many :cdn_files
+  has_many :cdn_files, dependent: :destroy
   alias_attribute :files, :cdn_files
 
-  has_many :product_documents
+  has_many :product_documents, dependent: :destroy
   has_many :products, through: :product_documents, source: :product
+
+  def sync_variations
+    return if files.nil?
+    return if files.none?
+
+    # documents/products/Flexsol-903/TD-Flexsol-903-EN.pdf
+    # documents/products/Flexsol-903/TD-Flexsol-903-DE.pdf
+    # documents/products/Flexsol-903/TD-Flexsol-903-FR.pdf
+    paths = files.map(&:path)
+
+    # TD-Flexsol-903-EN.pdf
+    # TD-Flexsol-903-DE.pdf
+    # TD-Flexsol-903-FR.pdf
+    file_names = paths.map { |p| p.split('/').last }
+
+    # EN.pdf
+    # DE.pdf
+    # FR.pdf
+    extensions = file_names.map { |p| p.split('-').last }
+
+    # EN.pdf,DE.pdf,FR.pdf
+    update!(variations: extensions.join(','))
+  end
 end