Showing previously selected items in drop down menu - html

Question

Using angular and angular-xeditable I have a drop down menu with a number of options from which to select in the 'amenities' array.
Once I save the selections from the drop down and saved them, I want to make it possible for the user to come back to the page and edit previously selected items.
HTML:
<select multiple class="w-select am-dropdown" size="12" data-ng-model="Amenities"
data-ng-options="amenity.amenity for amenity in amenities" required=""></select>
JS:
$scope.amenities = [{amenity: coffee}, {amenity: beer}, {amenity: parking}];
$scope.Amenities = [];
$scope.selectedAmenities = [coffee, beer];//these are amenities saved in the
database that I want to be able to show as selected using the editable form

Answer 1

Have a case as same as this
Add $scope.$watch to put selected value to $scope.selectedValues as below
$scope.$watch('selectedAmenities ', function (nowSelected) {
$scope.selectedValues = [];
if (!nowSelected) {
return;
}
angular.forEach(nowSelected, function (val) {
$scope.selectedValues.push(val.amenity.toString());
});
});
And then use it like below:
select multiple ng-model="selectedValues" class="w-select am-dropdown" size="12" >
<option ng-repeat="amenity in amenities" value="{{amenity.amenity}}" ng-selected="{{selectedValues.indexOf(amenity.amenity)!=-1}}">{{amenity.amenity}}</option>
</select>
Full code at Plunker
Hope it helps you.

Answer 2

do u mean this?
var m = angular.module('m', []).controller('c', ['$scope',
function($scope) {
$scope.avilibleValues = ['a1', 'a2', 'a3', 'a4', 'a5'];
$scope.selected = [];
$scope.last = 'a1';
$scope.selecting = 'a1';
$scope.select = function(it) {
console.log('select:' + it);
$scope.selecting = it;
};
$scope.change = function() {
console.log($scope.last);
$scope.last && $scope.selected.push($scope.last);
$scope.last = $scope.selecting;
};
}
]);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="script.js"></script>
<div ng-app="m">
<div ng-controller="c">
<div class="row">
<label>seleted:</label>
<div>
<p ng-repeat="it in selected">
<a ng-click="select(it)">{{it}}</a>
</p>
<div>
</div>
<div class="row">
<label>selet</label>
<select ng-model="selecting" ng-options=" i for i in avilibleValues" ng-change="change()"></select>
</div>
</div>
</div>
<p>
selecting:{{selecting}}
<p>
selected:{{selected}}
<p>
last:{{last}}
<p>
</div>
</div>