gistfile1.txt

Understanding Associations in rails

1. Take 2 models
2. Associate them
3. Ensure database has association columns needed
4. Scope routes
5. Use the scope in your controller

Example:
class Meat
  belongs_to :sandwhich
end
class Sandwhich
  has_many :meats
end

$ rails g migration add_sandwhich_id_to_meats sandwhich_id:integer

resources :sandwhiches do
  resources :meats
end

class MeatsController
  before_action :find_sandwhich
  
  private
  def find_sandwhich
    @sandwhich = Sandwhich.find(params[:sandwhich_id])
  end
end