content migration

app/services/content_migration.rb

+class ContentMigration
+
+  def self.run
+    ContentMigration.new.migrate_all
+  end
+
+  def migrate_all
+    about_types.each do |about_type|
+      migrate_objects(about_type)
+    end
+  end
+
+  def migrate(object)
+    puts object
+    heading = nil
+    heading_position = 0
+    object.blocks.each do |block|
+      # ignore blocks already inside headings
+      next if block.heading.present?
+      # Move title from block to heading
+      if block.title.present?
+        heading = object.headings.create(university: object.university)
+        heading.title = block.title
+        heading.position = heading_position
+        heading.save
+        heading_position += 1
+        block.title = ''
+        block.save
+      end
+      # Add blocks to current heading
+      block.heading = heading
+      block.save
+    end
+  end
+  
+  protected
+
+  def about_types
+    Communication::Block.pluck(:about_type).uniq
+  end
+
+  def about_ids(about_type)
+    Communication::Block.where(about_type: about_type).pluck(:about_id).uniq
+  end
+
+  def migrate_objects(about_type)
+    about_ids(about_type).each do |about_id|
+      object = about_type.constantize.find(about_id)
+      migrate(object)
+    end
+  end
+
+end
\ No newline at end of file

lib/tasks/app.rake

@@ -8,6 +8,7 @@ namespace :app do
 
   desc 'Fix things'
   task fix: :environment do
+    ContentMigration.run
   end
 
   namespace :websites do