如何过滤我的数据?(ng-grid) [英] How to filter my data? (ng-grid)

问题描述

我认为这很可能非常简单，但我找不到任何关于如何在其网站上显示的filterText"之外添加过滤器的明确文档.我想要做的就是这么简单:

I think this is most likely very simple but I cannot find any clear documentation on how to add a filter outside of the 'filterText' that is shown on their website. What I am trying to do is something as simple as this:

$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;
 }

或者我是否可以以某种方式过滤数据源?我试过这个:

Or maybe if I could filter the datasource somehow? I tried this:

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

但是它抛出了很多错误.

But it is throwing quite a few errors.

推荐答案

我找到了一种即时更新的方法.基本上，我持有我所有数据的隐藏集，并在收到新数据或更改我的过滤器时 - 我将此过滤器应用于完整数据集并将过滤版本交给网格.

I have found a way that updates instantly. Basically I hold a hidden set of all my data, and upon receiving new data or changing my filter - I apply this filter to the full data set and hand the grid the filtered version.

这让我可以在过滤器中使用 comparators(即年龄 >= 50)，这就是这个问题的目的.

This lets me use comparators (i.e. age >= 50) in my filter, which is the purpose of this question.

// 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;
 }

这篇关于如何过滤我的数据?(ng-grid)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！