wip: wcag structure

app/models/guideline.rb

@@ -0,0 +1,18 @@
+class Guideline < ApplicationRecord
+  belongs_to :principle
+
+  has_many :checks
+
+  has_rich_text :description_de
+  has_rich_text :description_en
+
+  translates_attributes :name, :description
+
+  def to_s
+    "#{full_number} #{t_name}"
+  end
+
+  def full_number
+    [ principle.id, number ].join(".")
+  end
+end