Function class_names 

pub fn class_names(classes: &[(&str, bool)]) -> String

Space-separated class names whose condition is true (Rails’ class_names / token_list).

In a template (askama passes the array by reference): <a class="{{ ocre::helpers::class_names([("tab", true), ("active", is_current)]) }}">.

Examples

let classes = ocre::helpers::class_names(&[("btn", true), ("btn-danger", false), ("wide", true)]);
assert_eq!(classes, "btn wide");