根据集合的大小,最好计算在ng-repeat中迭代的集合,以便过滤器在模型更改时不会持续执行.

http://jsfiddle.net/suCWn/

如果我理解正确的话,基本上你会做这样的事情：

$scope.search = function (shop) {
 
    if ($scope.selectedCityId === undefined || $scope.selectedCityId.length === 0) {
        return true;
    }
 
    var found = false;
    angular.forEach(shop.locations,function (location) {          
        if (location.city_id === parseInt($scope.selectedCityId)) {
            found = true;
        }
    });
 
    return found;
};