> http://spin.atomicobject.com/2008/01/27/the-exceptional-presenter Interesting idea too. So basically I need to totally rethink and refactor the way my views display the information to the customer:
Let's see how I currently display or not an add to cart button depending whether or not the product is free. My very first quick and very ugly procedural hard to spec solution was to do in the view: <%- if @product.price >= 0 -%> <%= display_button %> <%- else -%> This product is free! <%- end -%> Then my second solution was to create an instance method so that the view doesn't know about the Product internal mechanism about it's freeness: <%- if @product.free? -%> This product is free! <%- else ... -%> Yeah I thought I was an OOP master and Demeter could rest in peace! But thinking about the GOF Builder and Exceptional Presenter design patterns you talk about, that would mean that the html output for a Product should therefore happen in the Model itself. And then in the show.html.erb, I simply call: <%= @product.display -%> and all the magic about whether or not the product is free and to display the button has already been handled inside the model (or another related place) when it gets instantiated. Same applies to item.product.title, that would be handled elsewhere than in the view. However it might clutter the Model, so actually there is more to MVC: each Model should have a sub class or something that handles how the model instance will be presented to the view. How do you handle such issue? Are there some open source rails apps that I could learn from? -- Posted via http://www.ruby-forum.com/. _______________________________________________ rspec-users mailing list rspec-users@rubyforge.org http://rubyforge.org/mailman/listinfo/rspec-users
