When adding radio buttons and checkboxes to my pre-filled form I find myself having to duplicate code.

Ideally I want to declare via a variable if the input field should be selected or not. Like e.g.:

- checked = false # or `true`, `false`, `nil`, `""`
%input{:type => "radio", :name => "foo", :value => "bar", :checked => checked}= "foo"
%input{:type => "checkbox", :name => "foo", :value => "bar", :checked => checked}= "foo"

But the result is that whatever value I put into the checked variable it results in the input field ends up selected.

My solution results in lots of lines of duplicate code:

- checked = false # or `true`, `false`, `nil`, `""`
- if true
  %input{:type => "radio", :name => "foo", :value => "bar", :checked => true}= "foo"
- else
  %input{:type => "radio", :name => "foo", :value => "bar"}= "foo"

- if true
  %input{:type => "checkbox", :name => "foo", :value => "bar", :checked => true}= "foo"
- else
  %input{:type => "checkbox", :name => "foo", :value => "bar"}= "foo"

Anyone who know a better way?