Reputation: 4188
I'm fairly new to Angular and was wondering how I can update a dropdown after doing an insert and have the new value selected?
I tried the following:
<select class="form-control" ng-model="selectedCompany" ng-change="GetCompany()"
ng-options="company.key as company.value for company in CompanyList">
<option value="">Select a Company</option>
</select>
This populates a list of companies when the page 1st loads and the inserted data is returned to scope + it's id.
To add the new value without refreshing the page, I'm trying the following non-working (almost) code:
var key = $scope.company.id;
var value = $scope.company.name;
$scope.CompanyList.push({ key: value });
$scope.selectedCompany = $scope.company.id;
This seems to add a value to the dropdown, but it's showing up blank. It's also not selecting the blank value (which should be the new company name), any help would be appreciated.
Upvotes: 1
Views: 3387
Reputation: 2835
It seems that when you create the new company object, you need to assign the value
property which is the display name.
Here's a code snippet:
angular.module("myApp", [])
.controller("testCtrl", function() {
this.companyList = [{
key: 1,
value: "Company A"
}];
var ctrl = this;
this.addCompany = function() {
ctrl.companyList.push({key:2, value:"Company B"});
ctrl.selectedCompany = 2;
}
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myApp" ng-controller="testCtrl as ctrl">
<select class="form-control"
ng-model="ctrl.selectedCompany"
ng-options="company.key as company.value for company in ctrl.companyList">
<option value="" disabled>Select a Company</option>
</select>
<button ng-click="ctrl.addCompany()">
Add company B and select it
</button>
</div>
Upvotes: 4
Reputation: 12025
Ok, so what do we have here?
You're creating your options with the ngOptions directive like this: ng-options="company.key as company.value for company in CompanyList"
That mean that the array $scope.CompanyList
must have objects with a key
property that will be set to the option value
attribute, and a value
that will be the option display value (Or label, if you prefer to call it that way).
What you were doing wrong: You added an object with only one property named key
and set its value with the value
variable: $scope.CompanyList.push({ key: value });
How should you fix it: You need to append object(s) with a key
and a value
like so: $scope.CompanyList.push({ key: key, value: value });
Upvotes: 3
Reputation: 18309
The following line push an object, which has a property name "key" set to value
:
$scope.CompanyList.push({ key: value });
The result will be:
{'key': $scope.company.name}
You may change it to:
$scope.CompanyList.push({key: key, value: value});
Which will result in:
{ 'key': $scope.company.id, 'value': $scope.company.name }
Upvotes: 1