Problem
You want to truncate string to a specified length inside your Handlebars templates.
Solution
Write a custom Handlebars helper that can truncates text.
Discussion
The Handlebars helper is very simple. It takes two parameters: str (string) and len (length).
Ember.Handlebars.helper('truncate', function(str, len) {
if (str.length > len) {
return str.substring(0, len - 3) + '...';
} else {
return str;
}
});