Angular Selectable Drop-down Menu

I'm facing an issue with using angularjs for dropdown with multiple selection. When I try to include 2 dropdowns in the same form, only one of them gets initialized properly. Here is a sample code snippet http://jsfiddle.net/vUSPu/1221/. Can someone provide guidance on how to display 2 functional dropdowns? Thank you!

<div ng-app="myApp" ng-controller="AppCtrl">    
    <dropdown-multiselect pre-selected="member.roles" model="selected_items" options="roles"></dropdown-multiselect>


    <pre>selected roles = {{selected_items | json}}</pre>
</div>

<div ng-app="myApp2" ng-controller="AppCtrl2">    
    <dropdown-multiselect pre-selected="member.roles" model="selected_items" options="roles"></dropdown-multiselect>


var app = angular.module('myApp', ['app.directives']);

app.controller('AppCtrl', function($scope){                     
    $scope.roles = [
          {"id": 1, "name": "Manager", "assignable": true},
          {"id": 2, "name": "Developer", "assignable": true},
          {"id": 3, "name": "Reporter", "assignable": true}
    ];

    $scope.member = {roles: []};
    $scope.selected_items = [];
});

var app2 = angular.module('myApp2', ['app.directives']);

app2.controller('AppCtrl2', function($scope){                     
    $scope.roles = [
          {"id": 1, "name": "Manager", "assignable": true},
          {"id": 2, "name": "Developer", "assignable": true},
          {"id": 3, "name": "Reporter", "assignable": true}
    ];

    $scope.member = {roles: []};
    $scope.selected_items = [];
});

var app_directives = angular.module('app.directives', []);

app_directives.directive('dropdownMultiselect', function(){
   return {
       restrict: 'E',
       scope:{           
            model: '=',
            options: '=',
            pre_selected: '=preSelected'
       },
       template: "<div class='btn-group' data-ng-class='{open: open}'>"+
        "<button class='btn btn-small'>Select</button>"+
                "<button class='btn btn-small dropdown-toggle' data-ng-click='open=!open;openDropdown()'><span class='caret'></span></button>"+
                "<ul class='dropdown-menu' aria-labelledby='dropdownMenu'>" + 
                    "<li><a data-ng-click='selectAll()'><i class='icon-ok-sign'></i>  Check All</a></li>" +
                    "<li><a data-ng-click='deselectAll();'><i class='icon-remove-sign'></i>  Uncheck All</a></li>" +                    
                    "<li class='divider'></li>" +
                    "<li data-ng-repeat='option in options'> <a data-ng-click='setSelectedItem()'>{{option.name}}<span data-ng-class='isChecked(option.id)'></span></a></li>" +                                        
                "</ul>" +
            "</div>" ,
       controller: function($scope){

           $scope.openDropdown = function(){        
                    $scope.selected_items = [];
                    for(var i=0; i<$scope.pre_selected.length; i++){                        $scope.selected_items.push($scope.pre_selected[i].id);
                    }                                        
            };

            $scope.selectAll = function () {
                $scope.model = _.pluck($scope.options, 'id');
                console.log($scope.model);
            };            
            $scope.deselectAll = function() {
                $scope.model=[];
                console.log($scope.model);
            };
            $scope.setSelectedItem = function(){
                var id = this.option.id;
                if (_.contains($scope.model, id)) {
                    $scope.model = _.without($scope.model, id);
                } else {
                    $scope.model.push(id);
                }
                console.log($scope.model);
                return false;
            };
            $scope.isChecked = function (id) {                 
                if (_.contains($scope.model, id)) {
                    return 'icon-ok pull-right';
                }
                return false;
            };                                 
       }
   } 
});

Answer №1

It appears that there is a slight variance between your JSFiddle example and the code you provided. Which one accurately represents your requirements?

Solution in JSFiddle

You seem to have duplicated the ng-app="myApp", resulting in the initialization of the AngularJS app instance for myApp before the second code executes. To address this, you can eliminate the second initialization and nest the second dropdown within the initial (and sole) ng-app scope.

Solution based on the provided code

If you intend to run two distinct applications simultaneously in your document, you must manually begin the process as Angular will only recognize the first one. This script snippet illustrates how you can achieve this:

<script>
  angular.bootstrap(document, ['myApp', 'myApp2']);
</script>

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