Ordering the value using AngularJS when ng-repeat is done by key, value pair

Question

Ordering the value using AngularJS when ng-repeat is done by key, value pair

After utilizing the countBy function in lodash to tally up each item's occurrences within a dataset, my findings are as follows:

$scope.colors= {
"Orange": 3,
"Blue": 2,
"Pink": 1,
"Red": 1,
"Black": 2,
};

Now, I am looking to showcase this data while arranging it based on its value. My attempt using AngularJS's orderBy filter like so:

<div ng-controller="myCtrl" ng-app="myApp">
    <ul>
      <li ng-repeat="(key,value) in colors | orderBy:value">
        {{key}} ({{value}})
      </li>
    </ul>
</div>

However, it seems that the orderBy filter is not producing the desired outcome (check out the plunkr here)

Is there a solution to achieve ordering with the current data structure or should the data be reorganized for better results? Thank you in advance!

angularjs lodash

Answer 1

Answer №1

According to the provided documentation, the function orderBy in AngularJS expects an array as input, not an object. In my experience, using an object with ng-repeat is generally not recommended.

To resolve this issue, you can easily transform your object into an array by following these steps:

$scope.colors = [];
angular.forEach(occurrences, function(value, key) {
    $scope.colors.push({
        color: key,
        count: value
    });
});

Once you have transformed your object into an array, you can then use the following code snippet:

<li ng-repeat="element in colors | orderBy:'count'">
    {{ element.color }} ({{ element.count }})
</li>

You can also view the changes made in this updated Plunker example.

Answer 2

According to the provided documentation, the function orderBy in AngularJS expects an array as input, not an object. In my experience, using an object with ng-repeat is generally not recommended.

To resolve this issue, you can easily transform your object into an array by following these steps:

$scope.colors = [];
angular.forEach(occurrences, function(value, key) {
    $scope.colors.push({
        color: key,
        count: value
    });
});

Once you have transformed your object into an array, you can then use the following code snippet:

<li ng-repeat="element in colors | orderBy:'count'">
    {{ element.color }} ({{ element.count }})
</li>

You can also view the changes made in this updated Plunker example.

Answer 3

Answer №2

Through several attempts, I managed to create a solution for looping through an object and arranging it by the key.

<div ng-repeat="key1 in keys(obj1) | orderBy: key1">

Answer 4

Through several attempts, I managed to create a solution for looping through an object and arranging it by the key.

<div ng-repeat="key1 in keys(obj1) | orderBy: key1">

Answer 5

Answer №3

One approach would be to create an array structured like this:

items = [{name: 'apple', quantity: 10}, {name: 'banana', quantity: 5}]

Then, you can implement the following in your code:

ng-repeat="item in items | orderBy:'quantity'"

Check out Plunkr for a live example.

Answer 6

One approach would be to create an array structured like this:

items = [{name: 'apple', quantity: 10}, {name: 'banana', quantity: 5}]

Then, you can implement the following in your code:

ng-repeat="item in items | orderBy:'quantity'"

Check out Plunkr for a live example.

Answer 7

Answer №4

unique perspective - regarding

extracting a string from a DataTable using JsonConvert.SerializeObject(), essentially resulting in a
List<Dictionary<string, string>>

This example combines various solutions (apologies for the lack of references)
Within an AngularJs controller:

vm.propertyName = '\u0022Spaced Column Name\u0022';
vm.reverse = true;

vm.sortBy = function (propertyName) {
                   vm.reverse = (vm.propertyName === '\u0022' + propertyName +'\u0022') ? !vm.reverse : false;
                   vm.propertyName = '\u0022' + propertyName + '\u0022';
    };


vm.Data = JSON.parse(retValue.Data);
                    for (var i = 0; i < vm.Data.length; i++) {
                        var obj = {};
                        angular.forEach(vm.Data[i], function (value, key) {
                            obj[key] = value;

                        });
                        vm.DataArr.push(obj);
                    }

Using ng-if="key != 'Id'" to hide the Id column with Guid
Then in the HTML:

<table border="1">
            <tr>
                <td ng-repeat="(key, value) in vm.Data[0]" ng-if="key != 'Id'">
                    <button ng-click="vm.sortBy(key)">{{key}}</button>
                    <span ng-show="vm.propertyName == '\u0022'+key+'\u0022' && !vm.reverse" class="fa fa-arrow-up"></span>
                    <span ng-show="vm.propertyName == '\u0022'+key+'\u0022'  && vm.reverse" class="fa fa-arrow-down"></span>
                </td>
            </tr>
            <tr ng-repeat="row in vm.DataArr |orderBy:vm.propertyName:vm.reverse track by $index" ng-init="rowInd0 = $index">
                <td ng-repeat="(key, value) in vm.Data[0]" ng-if="key != 'Id'">
                     <span>{{row[key]}}</span>
                </td>
            </tr>
        </table>

Answer 8

unique perspective - regarding

extracting a string from a DataTable using JsonConvert.SerializeObject(), essentially resulting in a
List<Dictionary<string, string>>

This example combines various solutions (apologies for the lack of references)
Within an AngularJs controller:

vm.propertyName = '\u0022Spaced Column Name\u0022';
vm.reverse = true;

vm.sortBy = function (propertyName) {
                   vm.reverse = (vm.propertyName === '\u0022' + propertyName +'\u0022') ? !vm.reverse : false;
                   vm.propertyName = '\u0022' + propertyName + '\u0022';
    };


vm.Data = JSON.parse(retValue.Data);
                    for (var i = 0; i < vm.Data.length; i++) {
                        var obj = {};
                        angular.forEach(vm.Data[i], function (value, key) {
                            obj[key] = value;

                        });
                        vm.DataArr.push(obj);
                    }

Using ng-if="key != 'Id'" to hide the Id column with Guid
Then in the HTML:

<table border="1">
            <tr>
                <td ng-repeat="(key, value) in vm.Data[0]" ng-if="key != 'Id'">
                    <button ng-click="vm.sortBy(key)">{{key}}</button>
                    <span ng-show="vm.propertyName == '\u0022'+key+'\u0022' && !vm.reverse" class="fa fa-arrow-up"></span>
                    <span ng-show="vm.propertyName == '\u0022'+key+'\u0022'  && vm.reverse" class="fa fa-arrow-down"></span>
                </td>
            </tr>
            <tr ng-repeat="row in vm.DataArr |orderBy:vm.propertyName:vm.reverse track by $index" ng-init="rowInd0 = $index">
                <td ng-repeat="(key, value) in vm.Data[0]" ng-if="key != 'Id'">
                     <span>{{row[key]}}</span>
                </td>
            </tr>
        </table>

Ordering the value using AngularJS when ng-repeat is done by key, value pair

Answer №1

Answer №2

Answer №3

Answer №4

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