wip: wcag structure

app/models/check.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 class Check < ApplicationRecord
-  belongs_to :principle
+  belongs_to :guideline
 
   has_and_belongs_to_many :links
   has_and_belongs_to_many :standards
@@ -51,9 +51,9 @@ class Check < ApplicationRecord
                         :standard_text,
                         :powerpoint_text
 
-  validates :number, uniqueness: true, presence: true
+  validates :number, uniqueness: { scope: :guideline_id }, presence: true
 
-  before_validation { self.number = self.class.maximum(:id).to_i + 1 unless self.number.present? }
+  # before_validation { self.number = self.class.maximum(:id).to_i + 1 unless self.number.present? }
 
   scope(:search, lambda { |terms|
     # TODO: Search only fields for current locale.
@@ -129,4 +129,20 @@ class Check < ApplicationRecord
   def external_number
     [ external_number_1, external_number_2, external_number_3 ].compact_blank.join(".")
   end
+
+  def external_number
+    [
+      guideline.principle.id,
+      guideline.number,
+      number
+    ].compact.join(".")
+  end
+
+  def full_number
+    external_number
+  end
+
+  def to_s
+    display_label
+  end
 end