Rails Formtastic: adding “data-” field to option tag

Question

I have:

form.input :duration, as: select, collection: {}

I need:

Answer 1

Assuming you have a model called Items, you can actually do this in formtastic like so:

form.select :duration, 
           collection: Items.map{|item| [item.name, item.id, {"data-price" => item.price}]}

Essentially what you are doing is passing an array of arrays where the final value in each array is a hash. E.g.

[  
  ['Item 1', 1, {"data-price" => '$100'}],   
  ['Item 2', 2, {"data-price" => '$200'}]
]

Rails 3+ (perhaps 2.x - I didn't confirm) will use the hash in such as array and simply add it to the html of the option tag. Giving you the following:

Item 1
Item 2