Snipplr - wackimonki

(Ruby) Rendering Partial Template while Passing Variable

Mon, 26 Feb 2007 22:08:26 GMT

Renders the partial template called 'cart', sends along local variable @cart, this will be known locally using the same name as the partial, 'cart'.

(Ruby) Testing If Variable is Empty (nil)

Mon, 26 Feb 2007 19:55:48 GMT

The code tests if session[:counter] exists. If you leave out the all important '?', it will fail with an error.

(Ruby) Totalling All of a Variable

Mon, 26 Feb 2007 19:04:12 GMT

This will add up all the prices and return it? What does |item| mean exactly?

(Ruby) Redirect from One Method to Another

Mon, 26 Feb 2007 18:34:17 GMT

Redirects from one method to another in a controller. This is handy when there's an error, and you need to go back to index page, or for other purposes.

(Ruby) Adding Button to View

Mon, 26 Feb 2007 18:29:08 GMT

Adds a button in view, which triggers a method. "Empty cart" is the button name empty_cart is the method name

(Ruby) Catching Error to be Displayed on Redirected Page

Mon, 26 Feb 2007 17:58:12 GMT

Catches an exception error, uses a technique called flash to display error on another page. The Ruby on Rails code needs to be in a controller. The rhtml code needs to be in the index layout.