Tips for implementing orderBy and filter in ng-repeat when working with an object instead of an array

Question

Tips for implementing orderBy and filter in ng-repeat when working with an object instead of an array

I am facing a data structure that looks like this:

$scope.people = {
        "ID123": {
            name_de: "Andre",
            name_en: "Anrew",
            age: 30,
            description: "He is the father of xyz and . . .",

             . . .

        },
        "IDabc": {
            name_de: "Markus",
            name_en: "Mark",
            age: 20,

             . . .
        },
        "IDxyz": {
            name_de: "Isaak",
            name_en: "Isaac",
            age: 23,

             . . .
        }

    . . .

}

and I have an input/ng-repeat:

<input ng-model="query" placeholder="Search . . .">
<ul>
    <li ng-repeat="person in people | orderBy:'name_de' | filter:query"> Some output here . . . </li>
</ul>

The question now is how can I effectively order and filter this data?

I previously managed with an Array of persons, but I require the unique "ID's" which makes using objects necessary!?

Additionally, I am searching for a method to filter the object based on multiple properties, such as name_de AND name_en (so it will display ID123 if the search term is Andre or Andrew) WHILE disregarding the "description" property (initially the problem was that the filter checked all properties)

javascript angularjs angularjs-ng-repeat

Answer 1

Answer №1

If you're looking to enhance your Angular skills, consider exploring the toArrayFilter module. You can find more information about it here.

For a hands-on experience, check out this sample demo of how to use the filter here:

angular.module('angular-toArrayFilter', [])

.filter('toArray', function () {
  return function (obj, addKey) {
    if (!(obj instanceof Object)) {
      return obj;
    }

    if ( addKey === false ) {
      return Object.values(obj);
    } else {
      return Object.keys(obj).map(function (key) {
        return Object.defineProperty(obj[key], '$key', { enumerable: false, value: key});
      });
    }
  };
});

var app = angular.module('app', ['angular-toArrayFilter']);

app.controller('firstCtrl', function($scope){

  $scope.persons = {

    "IDabc": {
            name_de: "Markus",
            name_en: "Mark",
            age: 20,


        },
        "ID123": {
            name_de: "Andre",
            name_en: "Anrew",
            age: 30,
            description: "He is the father of xyz and . . .",



        },

        "IDxyz": {
            name_de: "Isaak",
            name_en: "Isaac",
            age: 23,


        }   

};

});

html:

body ng-app="app">
  <div ng-controller="firstCtrl">
<input ng-model="query" placeholder="Suche . . .">
<ul>
    <li ng-repeat="p in persons | toArray | orderBy:'age' | filter:query"> {{p.name_de}} -> {{p.name_en}} </li>
</ul;
     </div>
   </body>

Answer 2

If you're looking to enhance your Angular skills, consider exploring the toArrayFilter module. You can find more information about it here.

For a hands-on experience, check out this sample demo of how to use the filter here:

angular.module('angular-toArrayFilter', [])

.filter('toArray', function () {
  return function (obj, addKey) {
    if (!(obj instanceof Object)) {
      return obj;
    }

    if ( addKey === false ) {
      return Object.values(obj);
    } else {
      return Object.keys(obj).map(function (key) {
        return Object.defineProperty(obj[key], '$key', { enumerable: false, value: key});
      });
    }
  };
});

var app = angular.module('app', ['angular-toArrayFilter']);

app.controller('firstCtrl', function($scope){

  $scope.persons = {

    "IDabc": {
            name_de: "Markus",
            name_en: "Mark",
            age: 20,


        },
        "ID123": {
            name_de: "Andre",
            name_en: "Anrew",
            age: 30,
            description: "He is the father of xyz and . . .",



        },

        "IDxyz": {
            name_de: "Isaak",
            name_en: "Isaac",
            age: 23,


        }   

};

});

html:

body ng-app="app">
  <div ng-controller="firstCtrl">
<input ng-model="query" placeholder="Suche . . .">
<ul>
    <li ng-repeat="p in persons | toArray | orderBy:'age' | filter:query"> {{p.name_de}} -> {{p.name_en}} </li>
</ul;
     </div>
   </body>

Answer 3

Answer №2

Regarding your inquiry,

I was able to use an Array of persons, but I require the "ID's", hence the necessity for objects!?

Could you please add ID as a property to your person objects so they appear like this?

$scope.persons = [
    { id: "ID123",
      name_de: "Andre",
      name_en: "Anrew",
      age: 30,
      description: "He is the father of xyz and . . .",
      . . .
    },
    { id: "IDabc",
      name_de: "Markus",
      name_en: "Mark",
      age: 20,
    },
         . . .
];

If you want to search by name_de AND name_en (or any other properties), you can create a custom filter. It's quite simple.

var app = angular.module("YourApp");
app.filter('MyCustomFilter', function(){
    return function(objects, criteria){
        if(!criteria)            
            return objects;

        var filterResult = new Array();
        for(var index in objects)
            if(objects[index].name_de.indexOf(criteria) != -1 || objects[index].name_en.indexOf(criteria) != -1)
                filterResult.push(objects[index]);
        return filterResult;
    }
});

Your HTML code will resemble this:

<input type="text" data-ng-model="personFilter" />
<div data-ng-repeat="person in persons | MyCustomFilter:personFilter"> ... </div>

Answer 4

Regarding your inquiry,

I was able to use an Array of persons, but I require the "ID's", hence the necessity for objects!?

Could you please add ID as a property to your person objects so they appear like this?

$scope.persons = [
    { id: "ID123",
      name_de: "Andre",
      name_en: "Anrew",
      age: 30,
      description: "He is the father of xyz and . . .",
      . . .
    },
    { id: "IDabc",
      name_de: "Markus",
      name_en: "Mark",
      age: 20,
    },
         . . .
];

If you want to search by name_de AND name_en (or any other properties), you can create a custom filter. It's quite simple.

var app = angular.module("YourApp");
app.filter('MyCustomFilter', function(){
    return function(objects, criteria){
        if(!criteria)            
            return objects;

        var filterResult = new Array();
        for(var index in objects)
            if(objects[index].name_de.indexOf(criteria) != -1 || objects[index].name_en.indexOf(criteria) != -1)
                filterResult.push(objects[index]);
        return filterResult;
    }
});

Your HTML code will resemble this:

<input type="text" data-ng-model="personFilter" />
<div data-ng-repeat="person in persons | MyCustomFilter:personFilter"> ... </div>

Tips for implementing orderBy and filter in ng-repeat when working with an object instead of an array

Answer №1

Answer №2

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