How to filter multiple values (OR operation) in angularJS

Question

I want to use the filter in angular and want to filter for multiple values, if it has either one of the values then it should be displayed.

I have for example this structure:

An object movie which has the property genres and I want to filter for Action and Comedy.

I know I can do filter:({genres: 'Action'} || {genres: 'Comedy'}), but what to do if I want to filter it dynamically. E.g. filter: variableX

How do I set variableX in the $scope, when I have an array of the genres I have to filter?

I could construct it as a string and then do an eval() but I don't want to use eval()...

Answer 1

I would just create a custom filter. They are not that hard.

angular.module('myFilters', []).
  filter('bygenre', function() {
    return function(movies,genres) {
      var out = [];
      // Filter logic here, adding matches to the out var.
      return out;
    }
  });

template:

<h1>Movies</h1>

<div ng-init="movies = [
          {title:'Man on the Moon', genre:'action'},
          {title:'Meet the Robinsons', genre:'family'},
          {title:'Sphere', genre:'action'}
       ];" />
<input type="checkbox" ng-model="genrefilters.action" />Action
<br />
<input type="checkbox" ng-model="genrefilters.family" />Family
<br />{{genrefilters.action}}::{{genrefilters.family}}
<ul>
    <li ng-repeat="movie in movies | bygenre:genrefilters">{{movie.title}}: {{movie.genre}}</li>
</ul>

Edit here is the link: Creating Angular Filters

UPDATE: Here is a fiddle that has an exact demo of my suggestion.

Answer 2

You can use a controller function to filter.

function MoviesCtrl($scope) {

    $scope.movies = [{name:'Shrek', genre:'Comedy'},
                     {name:'Die Hard', genre:'Action'},
                     {name:'The Godfather', genre:'Drama'}];

    $scope.selectedGenres = ['Action','Drama'];

    $scope.filterByGenres = function(movie) {
        return ($scope.selectedGenres.indexOf(movie.genre) !== -1);
    };

}

HTML:

<div ng-controller="MoviesCtrl">
    <ul>
        <li ng-repeat="movie in movies | filter:filterByGenres">
            {{ movie.name }} {{ movie.genre }}
        </li>
    </ul>
</div>

Answer 3

Creating a custom filter might be overkill here, you can just pass in a custom comparator, if you have the multiples values like:

$scope.selectedGenres = "Action, Drama"; 

$scope.containsComparator = function(expected, actual){  
  return actual.indexOf(expected) > -1;
};

then in the filter:

filter:{name:selectedGenres}:containsComparator

Answer 4

Here is the implementation of custom filter, which will filter the data using array of values.It will support multiple key object with both array and single value of keys. As mentioned inangularJS API AngularJS filter Doc supports multiple key filter with single value, but below custom filter will support same feature as angularJS and also supports array of values and combination of both array and single value of keys.Please find the code snippet below,

myApp.filter('filterMultiple',['$filter',function ($filter) {
return function (items, keyObj) {
    var filterObj = {
        data:items,
        filteredData:[],
        applyFilter : function(obj,key){
            var fData = [];
            if (this.filteredData.length == 0)
                this.filteredData = this.data;
            if (obj){
                var fObj = {};
                if (!angular.isArray(obj)){
                    fObj[key] = obj;
                    fData = fData.concat($filter('filter')(this.filteredData,fObj));
                } else if (angular.isArray(obj)){
                    if (obj.length > 0){
                        for (var i=0;i<obj.length;i++){
                            if (angular.isDefined(obj[i])){
                                fObj[key] = obj[i];
                                fData = fData.concat($filter('filter')(this.filteredData,fObj));    
                            }
                        }

                    }
                }
                if (fData.length > 0){
                    this.filteredData = fData;
                }
            }
        }
    };
    if (keyObj){
        angular.forEach(keyObj,function(obj,key){
            filterObj.applyFilter(obj,key);
        });
    }
    return filterObj.filteredData;
}
}]);

Usage:

arrayOfObjectswithKeys | filterMultiple:{key1:['value1','value2','value3',...etc],key2:'value4',key3:[value5,value6,...etc]}

Here is a fiddle example with implementation of above "filterMutiple" custom filter. :::Fiddle Example:::

Answer 5

If you want to filter on Array of Objects then you can give

filter:({genres: 'Action', key :value }.

Individual property will be filtered by particular filter given for that property.

But if you wanted to something like filter by individual Property and filter globally for all properties then you can do something like this.

<tr ng-repeat="supp in $data | filter : filterObject |  filter : search">

~Atul

Answer 6

I've spent some time on it and thanks to @chrismarx, I saw that angular's default filterFilter allows you to pass your own comparator. Here's the edited comparator for multiple values:

  function hasCustomToString(obj) {
        return angular.isFunction(obj.toString) && obj.toString !== Object.prototype.toString;
  }
  var comparator = function (actual, expected) {
    if (angular.isUndefined(actual)) {
      // No substring matching against `undefined`
      return false;
    }
    if ((actual === null) || (expected === null)) {
      // No substring matching against `null`; only match against `null`
      return actual === expected;
    }
    // I edited this to check if not array
    if ((angular.isObject(expected) && !angular.isArray(expected)) || (angular.isObject(actual) && !hasCustomToString(actual))) {
      // Should not compare primitives against objects, unless they have custom `toString` method
      return false;
    }
    // This is where magic happens
    actual = angular.lowercase('' + actual);
    if (angular.isArray(expected)) {
      var match = false;
      expected.forEach(function (e) {
        e = angular.lowercase('' + e);
        if (actual.indexOf(e) !== -1) {
          match = true;
        }
      });
      return match;
    } else {
      expected = angular.lowercase('' + expected);
      return actual.indexOf(expected) !== -1;
    }
  };

And if we want to make a custom filter for DRY:

angular.module('myApp')
    .filter('filterWithOr', function ($filter) {
      var comparator = function (actual, expected) {
        if (angular.isUndefined(actual)) {
          // No substring matching against `undefined`
          return false;
        }
        if ((actual === null) || (expected === null)) {
          // No substring matching against `null`; only match against `null`
          return actual === expected;
        }
        if ((angular.isObject(expected) && !angular.isArray(expected)) || (angular.isObject(actual) && !hasCustomToString(actual))) {
          // Should not compare primitives against objects, unless they have custom `toString` method
          return false;
        }
        console.log('ACTUAL EXPECTED')
        console.log(actual)
        console.log(expected)

        actual = angular.lowercase('' + actual);
        if (angular.isArray(expected)) {
          var match = false;
          expected.forEach(function (e) {
            console.log('forEach')
            console.log(e)
            e = angular.lowercase('' + e);
            if (actual.indexOf(e) !== -1) {
              match = true;
            }
          });
          return match;
        } else {
          expected = angular.lowercase('' + expected);
          return actual.indexOf(expected) !== -1;
        }
      };
      return function (array, expression) {
        return $filter('filter')(array, expression, comparator);
      };
    });

And then we can use it anywhere we want:

$scope.list=[
  {name:'Jack Bauer'},
  {name:'Chuck Norris'},
  {name:'Superman'},
  {name:'Batman'},
  {name:'Spiderman'},
  {name:'Hulk'}
];


<ul>
  <li ng-repeat="item in list | filterWithOr:{name:['Jack','Chuck']}">
    {{item.name}}
  </li>
</ul>

Finally here's a plunkr.

Note: Expected array should only contain simple objects like String, Number etc.

Answer 7

you can use searchField filter of angular.filter

JS:

$scope.users = [
 { first_name: 'Sharon', last_name: 'Melendez' },
 { first_name: 'Edmundo', last_name: 'Hepler' },
 { first_name: 'Marsha', last_name: 'Letourneau' }
];

HTML:

<input ng-model="search" placeholder="search by full name"/> 
<th ng-repeat="user in users | searchField: 'first_name': 'last_name' | filter: search">
  {{ user.first_name }} {{ user.last_name }}
</th>
<!-- so now you can search by full name -->

Answer 8

You can also use ngIf if the situation permits:

<div ng-repeat="p in [
 { name: 'Justin' }, 
 { name: 'Jimi' }, 
 { name: 'Bob' }
 ]" ng-if="['Jimi', 'Bob'].indexOf(e.name) > -1">
 {{ p.name }} is cool
</div>

Answer 9

The quickest solution that I've found is to use the filterBy filter from angular-filter, for example:

<input type="text" placeholder="Search by name or genre" ng-model="ctrl.search"/>   
<ul>
  <li ng-repeat="movie in ctrl.movies | filterBy: ['name', 'genre']: ctrl.search">
    {{movie.name}} ({{movie.genre}}) - {{movie.rating}}
  </li>
</ul>

The upside is that angular-filter is a fairly popular library (~2.6k stars on GitHub) which is still actively developed and maintained, so it should be fine to add it to your project as a dependency.

Answer 10

I believe this is what you're looking for:

<div>{{ (collection | fitler1:args) + (collection | filter2:args) }}</div>

Answer 11

Please try this

var m = angular.module('yourModuleName');
m.filter('advancefilter', ['$filter', function($filter){
    return function(data, text){
        var textArr = text.split(' ');
        angular.forEach(textArr, function(test){
            if(test){
                  data = $filter('filter')(data, test);
            }
        });
        return data;
    }
}]);

Answer 12

Lets assume you have two array, one for movie and one for genre

Just use the filter as: filter:{genres: genres.type}

Here genres being the array and type has value for genre

Answer 13

I wrote this for strings AND functionality (I know it's not the question but I searched for it and got here), maybe it can be expanded.

String.prototype.contains = function(str) {
  return this.indexOf(str) != -1;
};

String.prototype.containsAll = function(strArray) {
  for (var i = 0; i < strArray.length; i++) {
    if (!this.contains(strArray[i])) {
      return false;
    }
  }
  return true;
}

app.filter('filterMultiple', function() {
  return function(items, filterDict) {
    return items.filter(function(item) {
      for (filterKey in filterDict) {
        if (filterDict[filterKey] instanceof Array) {
          if (!item[filterKey].containsAll(filterDict[filterKey])) {
            return false;
          }
        } else {
          if (!item[filterKey].contains(filterDict[filterKey])) {
            return false;
          }
        }
      }
      return true;
    });  
  };
});

Usage:

<li ng-repeat="x in array | filterMultiple:{key1: value1, key2:[value21, value22]}">{{x.name}}</li>

Answer 14

Angular Or Filter Module

$filter('orFilter')([{..}, {..} ...], {arg1, arg2, ...}, false)

here is the link: https://github.com/webyonet/angular-or-filter

Answer 15

I had similar situation. Writing custom filter worked for me. Hope this helps!

JS:

App.filter('searchMovies', function() {
    return function (items, letter) {
        var resulsts = [];
        var itemMatch = new RegExp(letter, 'i');
        for (var i = 0; i < items.length; i++) {
            var item = items[i];
            if ( itemMatch.test(item.name) || itemMatch.test(item.genre)) {
                results.push(item);
            }
        }
        return results;
    };
});

HTML:

<div ng-controller="MoviesCtrl">
    <ul>
        <li ng-repeat="movie in movies | searchMovies:filterByGenres">
            {{ movie.name }} {{ movie.genre }}
        </li>
    </ul>
</div>

Answer 16

Here is my example how create filter and directive for table jsfiddle

directive get list (datas) and create table with filters

<div ng-app="autoDrops" ng-controller="HomeController">
<div class="row">
    <div class="col-md-12">
        <h1>{{title}}</h1>
        <ng-Multiselect array-List="datas"></ng-Multiselect>
    </div>
</div>
</div>

my pleasure if i help you

Answer 17

Too late to join the party but may be it can help someone:

We can do it in two step, first filter by first property and then concatenate by second filter:

$scope.filterd = $filter('filter')($scope.empList, { dept: "account" });
$scope.filterd = $scope.filterd.concat($filter('filter')($scope.empList, { dept: "sales" }));  

See the working fiddle with multiple property filter

Answer 18

OPTION 1: Using Angular providered filter comparator parameter

// declaring a comparator method
$scope.filterBy = function(actual, expected) {
    return _.contains(expected, actual); // uses underscore library contains method
};

var employees = [{name: 'a'}, {name: 'b'}, {name: 'c'}, {name: 'd'}];

// filter employees with name matching with either 'a' or 'c'
var filteredEmployees = $filter('filter')(employees, {name: ['a','c']}, $scope.filterBy);

OPTION 2: Using Angular providered filter negation

var employees = [{name: 'a'}, {name: 'b'}, {name: 'c'}, {name: 'd'}];

// filter employees with name matching with either 'a' or 'c'
var filteredEmployees = $filter('filter')($filter('filter')(employees, {name: '!d'}), {name: '!b'});

Answer 19

My solution

ng-repeat="movie in movies | filter: {'Action'} + filter: {'Comedy}"

Answer 20

the best answer is :

filter:({genres: 'Action', genres: 'Comedy'}