How to generate friendly urls without overhead of friendly id and etc.

create_items.rb

# db/migrate/create_items.rb
# if you use activerecord
class CreateItems < ActiveRecord::Migration
  def change
    create_table :items do |t|
      t.string :title
      t.string :slug
      t.timestamps
    end
  end
end

generate_slug.rb

# app/model/concerns/generate_slug.rb
module GenerateSlug
  extend ActiveSupport::Concern

  included do
    before_save do
      self.slug = generate_slug if self.slug.blank? 
    end
  end
  
  def generate_slug
    # you should convert you title that can be with spaces to something more acceptable for urls
    # you can chage it as you need for your specific language situation
    slug = transliterate(self.title).parameterize
    #add id as prefix if you have record with same titel aleady
    "#{self.id}-#{slug}" if self.class.find_by(slug: slug).present? 
  end

end

item.rb

# app/models/item.rb
class Item < ApplicationRecord
# or if you use mongoid 
# class Item
#  inclide Mongoid::Document
  include GenerateSlug
  
end

routes.rb

# config/routes.rb
Rails.application.routes.draw do
#....  
  # param: :slug mean here that instead for passing param called id we pass param called slug
  # can check it with rake routes
  resources :items, only: [:index, :show], param: :slug
#....
end