A function to apply a string of pipe separated filters to a given value using the angular $filter service.

angular.applyFilters.js

//
//	Applies a sequence of angular filters to a given variable 
// 
//	@param $filter    The angular filter service
//	@param value      The variable to apply the filters on
//	@param filterSpec A pipe separated list of filters to apply to the value e.g "filter1|filter2|filerN"
//

function applyFilters($filter, value, filterSpec) 
{
	var filters = filterSpec.trim().split('|'),
      	result = value;

	for (var i = 0, len = filters.length; i < len; i++)
  	{
    	var args = filters[i].trim().split(':'),
			filter = $filter(args.shift().trim());

    	args.unshift(result);
		result = filter.apply(null, args);
	}

	return result;
}