如何过滤我的数据？（ng-grid）

Question

我认为这很可能非常简单，但是我找不到关于如何在其网站上显示的’filterText’之外添加过滤器的清晰文档。我想做的就是这样简单：

$scope.filterOptions = {
    filter: $scope.myFilter,  // <- How to do something like this? 
    useExternalFilter: true
}

$scope.gridOptions = {
        data: 'entries',
        enableColumnResize: false,
        multiSelect: false,
        enableSorting: false,
        selectedItems: $scope.selectedEntries,
        filterOptions: $scope.filterOptions
}

$scope.lowerLimit = 50;
// My Filter
$scope.myFilter = function(entry) { 
    if (entry < $scope.lowerLimit) {
        return false; 
    }
    return true;
 }

编辑：或者也许我可以以某种方式过滤数据源？我尝试了这个：

$scope.gridOptions = {
        data: 'entries | filter: myFilter',
        enableColumnResize: false,
        multiSelect: false,
        enableSorting: false,
        selectedItems: $scope.selectedEntries,
}

但这会引发很多错误。

Answer 1

我发现了一种即时更新的方法。基本上，我保留了所有数据的隐藏集，并且在接收到新数据或更改过滤器后-我将此过滤器应用于完整数据集，并将网格交给过滤后的版本。

这使我可以在过滤器中使用 比较器 （即年龄> = 50），这是此问题的目的。

// Full unfiltered data set
$scope.entries = []; // Updated and pushed to

$scope.gridOptions = {
    // The grids already filtered data set
    data: 'filteredEntries',
    enableColumnResize: false,
    multiSelect: false,
    enableSorting: false,
    selectedItems: $scope.selectedEntries,
}

 $scope.$on("updateEntries", function(data) {
     // My table is filled by socket pushes, this is where it is updated.
     $scope.updateFilters();
 }

 $scope.$on("newFilter", function(newFilter) {
     // This is where I update my filter
     $scope.updateFilters();
 }

 $scope.updateFilters = function() {
     // Filters the full set and hands the result to the grid. 
     $scope.filteredEntries = $filter('filter')($scope.entries, $scope.myFilter);
     $scope.$digest();
 }

 // A modifiable limit, modify through newFilter so data is refiltered
 $scope.lowerLimit = 50;

 // My Filter
 $scope.myFilter = function(entry) { 
     if (entry < $scope.lowerLimit) {
        return false; 
     }
     return true;
 }