slug validator

app/models/communication/website/author.rb

@@ -39,6 +39,8 @@ class Communication::Website::Author < ApplicationRecord
            class_name: 'Communication::Website::Post',
            dependent: :nullify
 
+  validates :slug, uniqueness: { scope: :website_id }
+
   scope :ordered, -> { order(:last_name, :first_name) }
 
   def to_s

app/models/communication/website/category.rb

@@ -59,6 +59,7 @@ class Communication::Website::Category < ApplicationRecord
 
 
   validates :name, presence: true
+  validates :slug, uniqueness: { scope: :website_id }
 
   scope :ordered, -> { order(:position) }
 

app/models/communication/website/page.rb

@@ -63,6 +63,7 @@ class Communication::Website::Page < ApplicationRecord
              dependent: :nullify
 
   validates :title, presence: true
+  validates :path, uniqueness: { scope: :website_id }
 
   before_validation :make_path
   after_save :update_children_paths if :saved_change_to_path?

app/models/communication/website/post.rb

@@ -49,11 +49,12 @@ class Communication::Website::Post < ApplicationRecord
                           foreign_key: 'communication_website_post_id',
                           association_foreign_key: 'communication_website_category_id'
 
+  validates :title, presence: true
+  validates :slug, uniqueness: { scope: :website_id }
+
   scope :ordered, -> { order(published_at: :desc, created_at: :desc) }
   scope :recent, -> { order(published_at: :desc).limit(5) }
 
-  validates :title, presence: true
-
   def github_path_generated
     "_posts/#{published_at.year}/#{published_at.strftime "%Y-%m-%d"}-#{slug}.html"
   end

app/models/concerns/with_slug.rb

@@ -2,8 +2,6 @@ module WithSlug
   extend ActiveSupport::Concern
 
   included do
-    validates :slug,
-              uniqueness: { scope: :university_id }
     validates :slug,
               format: { with: /\A[a-z0-9\-]+\z/, message: I18n.t('slug_error') }
   end

app/models/education/teacher.rb

@@ -36,6 +36,8 @@ class Education::Teacher < ApplicationRecord
                           association_foreign_key: 'education_program_id'
   has_many :websites, -> { distinct }, through: :programs
 
+  validates :slug, uniqueness: { scope: :university_id }
+
   scope :ordered, -> { order(:last_name, :first_name) }
 
   def to_s