#63 Model Name in URL

By default, Rails uses the model's id in the URL. What if you want to use the name of the model instead? You can change this behavior by overriding the to_param method in the model. Watch this episode for details.

# product.rb
def to_param
  "#{id}-#{permalink}"
end

# controller
@product = Product.find(params[:id])
or

# product.rb
def to_param
  permalink
end

# controller
@product = Product.find_by_permalink(params[:id])