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@thecodejack
Forked from doginthehat/gist:1890659
Last active August 29, 2015 14:04
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// {{compare unicorns ponies operator="<"}}
// I knew it, unicorns are just low-quality ponies!
// {{/compare}}
//
// (defaults to == if operator omitted)
//
// {{equal unicorns ponies }}
// That's amazing, unicorns are actually undercover ponies
// {{/equal}}
// (from http://doginthehat.com.au/2012/02/comparison-block-helper-for-handlebars-templates/)
Handlebars.registerHelper('compare', function(lvalue, rvalue, options) {
if (arguments.length < 3)
throw new Error("Handlerbars Helper 'compare' needs 2 parameters");
operator = options.hash.operator || "==";
var operators = {
'==': function(l,r) { return l == r; },
'===': function(l,r) { return l === r; },
'!=': function(l,r) { return l != r; },
'<': function(l,r) { return l < r; },
'>': function(l,r) { return l > r; },
'<=': function(l,r) { return l <= r; },
'>=': function(l,r) { return l >= r; },
'typeof': function(l,r) { return typeof l == r; }
}
if (!operators[operator])
throw new Error("Handlerbars Helper 'compare' doesn't know the operator "+operator);
lvalue = Ember.Handlebars.get(this,lvalue, options);
rvalue = Ember.Handlebars.get(this,rvalue, options);
var result = operators[operator](lvalue,rvalue);
if( result ) {
return options.fn(this);
} else {
return options.inverse(this);
}
});
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