gistfile1.js

/////////// option 1 //////////////////

// both turntable and the consumer can mutate this object, potentially breaking functionality:
$scope.params = {
	limit: 100,
	offset: 0,
	searchString: '',
	sortCriteria: 'country',
	sortDirection: 'DESC'
};

$scope.paramMap = {
	limit: 'limit',
	offset: 'offset',
	search: 'searchString',
	sortField: 'sortCriteria',
	sortOrder: 'sortDirection'
};

////////// options 2 ///////////////////

$scope.params = {
	limit: 'limit',
	offset: 'offset',
	search: 'searchString',
	sortField: 'sortCriteria',
	sortOrder: 'sortDirection'
};

turntable.set('limit', 100);

turntable.get('limit');

////////// options 3 (original) ///////////////////

$scope.defaults = {
	limit: 100,
	offset: 0,
	search: '',
	sortField: 'country',
	sortOrder: 'DESC'
};

$scope.paramFactory = function (params) {
	return angular.extend({}, $scope.defaults, _.map(params, function () { ... });
};