class Post < ActiveRecord::Base
  has_many :comments
  has_many :tags, through: :post_tag_links
  
  validates_presence_of :title
  validates_presence_of :body
end

class CreatePostTable < ActiveRecord::Migration[6.0]
  def change
    create_table :posts do |t|
      t.string :title, null: false
      t.string :body, null: false
      t.boolean :locked, default: false
      t.timestamps
    end
  end
end