AngularJS filtering between a range

问题

I have set up a range slider that ranges from 0 - 2hr, the times are calculated in mins then converted to hh:mm like this: 10min, 20min, 1hr 20min, 2hr.

But now I am trying to filter a bunch of items inside the ng-repeat using the range specified by the range slider and I am having a hard time getting this working.

Here is what I have done http://cdpn.io/LDusa

I am using http://danielcrisp.github.io/angular-rangeslider/demo/ for the range slider.

And here is the code:

var app = angular.module('myApp', ['ui-rangeSlider']);
app.controller('myCtrl', function ($scope) {
    $scope.sliderConfig = {
        min:  0,
        max:  120,
        step: 10,
        userMin: 0,
        userMax: 30
    };

   $scope.times = [
      {"time": "20"},
      {"time": "50"},
      {"time": "30"},
      {"time": "10"},
      {"time": "85"},
      {"time": "75"},
      {"time": "95"},
      {"time": "100"},
      {"time": "80"},
      {"time": "200"},
      {"time": "260"},
      {"time": "120"},
      {"time": "62"},
      {"time": "68"},
      {"time": "5"},
      {"time": "116"}
   ];
});

app.filter('customFilter', function () {
    return function (value) {
        var h = parseInt(value / 60);
        var m = parseInt(value % 60);

        var hStr = (h > 0) ? h + 'hr'  : '';
        var mStr = (m > 0) ? m + 'min' : '';
        var glue = (hStr && mStr) ? ' ' : '';

        return hStr + glue + mStr;
    };
});

app.filter('range', function() {
  return function(input, min, max) {
    min = parseInt(min);
    max = parseInt(max);
    for (var i=min; i<=max; i++)
      input.push(i);
    return input;
  };
});

JADE(If you prefer HTML you can convert it back to html using this http://html2jade.org/):

div(ng-app="myApp")
  div(ng-controller='myCtrl')
    div(range-slider='', pin-handle='min', attach-handle-values='', prevent-equal-min-max='', step='{{sliderConfig.step}}', min='sliderConfig.min', max='sliderConfig.max', model-min='sliderConfig.userMin', model-max='sliderConfig.userMax', filter='customFilter')


    div(range-slider, prevent-equal-min-max='', attach-handle-values='',  min='sliderConfig.min', max='sliderConfig.max', model-min='sliderConfig.userMin', model-max='sliderConfig.userMax', filter='customFilter')

    div(ng-repeat="time in times | range:sliderConfig.userMin:sliderConfig.userMax")
      | {{ item.time | customFilter }}

How can I get this working so it will only display items when time is within the range specified in the range slider?

回答1:

Pass the sliderConfig into the filter to find the current min and max set on the range slider. Make sure your objects are in an array.

    <div range-slider="range-slider" 
         min="sliderConfig.min" 
         max="sliderConfig.max" 
         model-min="sliderConfig.userMin" 
         model-max="sliderConfig.userMax">
    </div>
    ...
    // Pass the slider config into the filter
    <div ng-repeat="time in times | rangeFilter:sliderConfig">
        {{ time.time | customFilter}}
    </div>
    ...
    $scope.times = [
      {time: '20'},
      {time: '50'},
      ...
    ];

The rangeFilter has the second parameter 'rangeInfo' which we can get the 2 values from.

app.filter('rangeFilter', function() {
    return function( items, rangeInfo ) {
        var filtered = [];
        var min = parseInt(rangeInfo.userMin);
        var max = parseInt(rangeInfo.userMax);
        // If time is with the range
        angular.forEach(items, function(item) {
            if( item.time >= min && item.time <= max ) {
                filtered.push(item);
            }
        });
        return filtered;
    };
});

Hope it helps.

来源：https://stackoverflow.com/questions/23728666/angularjs-filtering-between-a-range