add dynamic documents

app/models/dynamic_document.rb

@@ -0,0 +1,36 @@
+# frozen_string_literal: true
+
+# == Schema Information
+#
+# Table name: dynamic_documents
+#
+#  id          :bigint           not null, primary key
+#  body        :text             not null
+#  head        :text
+#  sha1        :text             not null
+#  uuid        :uuid             not null
+#  created_at  :datetime         not null
+#  updated_at  :datetime         not null
+#  template_id :bigint           not null
+#
+# Indexes
+#
+#  index_dynamic_documents_on_template_id  (template_id)
+#
+# Foreign Keys
+#
+#  fk_rails_...  (template_id => templates.id)
+#
+class DynamicDocument < ApplicationRecord
+  belongs_to :template
+
+  has_many_attached :attachments
+
+  has_many :versions, class_name: 'DynamicDocumentVersion', dependent: :destroy
+
+  before_validation :set_sha1
+
+  def set_sha1
+    self.sha1 = Digest::SHA1.hexdigest(body)
+  end
+end