2 files changed, 16 insertions, 2 deletions
diff --git a/interfaces/ruby/models/config.rb b/interfaces/ruby/models/config.rb
index 55b4106..007dbb3 100644
--- a/interfaces/ruby/models/config.rb
+++ b/interfaces/ruby/models/config.rb
@@ -1,17 +1,27 @@
 class Config < ActiveRecord::Base
   self.table_name = 'config'
+  before_validation :normalize_url
+  validates_presence_of :url
   validates_presence_of :title
   validates_presence_of :timezone
-  validates_presence_of :postsperpage
+  validates_presence_of :posts_per_page
+  
+private
+  
+  def normalize_url
+    url.strip!
+    url.sub! /\/$/, ''
+  end
 end
 
 class CreateConfigTable < ActiveRecord::Migration[6.0]
   def change
     create_table :config do |t|
+      t.string :url, null: false
       t.string :title, null: false
       t.string :subtitle
       t.string :timezone, null: false
-      t.integer :postsperpage, null: false
+      t.integer :posts_per_page, null: false, default: 15
     end
   end
 end
diff --git a/interfaces/ruby/models/post.rb b/interfaces/ruby/models/post.rb
index 3a29a1c..28cc82c 100644
--- a/interfaces/ruby/models/post.rb
+++ b/interfaces/ruby/models/post.rb
@@ -6,6 +6,10 @@ class Post < ActiveRecord::Base
   validates_presence_of :slug
   validates_presence_of :title
   validates_presence_of :body
+  
+  def url
+    "#{$config.url}/#{created_at.strftime("%Y/%m/%d")}/#{slug}"
+  end
 end
 
 class CreatePostTable < ActiveRecord::Migration[6.0]