AngularJS - Dynamic <option>s not being properly selected (by default) - angularjs

In my case, the dynamic (provided or created through ng-repeat) <option>s in a <select> are not properly selected (like in cases when the ng-model has an init value).
<select ng-model="my-model">
<option ng-repeat="n in numbers" value={{ n.val }}>{{ n.name }}</option>
</select>
Here's a plnkr to demonstrate my problem.

Try to use the ng-options directive on the select element instead of doing an ng-repeat.
<select ng-model="model2" ng-init="model2 = '3'" ng-options="n.value as n.name for n in numbers">
<option value="">Select an option..</option>
</select>
instead of
<select ng-model="model2" ng-init="model2 = '3'">
<option value="">Select an option..</option>
<option ng-repeat="n in numbers" value="{{ n.value }}"> {{ n.name }} </option>
</select>
source: select directive doc
updated plunkr: ng-options plunkr
EDIT:
If you really want to keep your ng-repeat, you can add additional markup to make it work:
<select ng-model="model2" ng-init="model2 = '3'">
<option value="">Select an option..</option>
<option ng-repeat="n in numbers" value="{{ n.value }}" ng-selected="n.value == model2"> {{ n.name }} </option>
</select>
updated plunkr: ng-repeat plunkr
Regards,
Camusensei

Related

setting empty value inside select if is empty select AngularJS

can someone tell me how can I make empty value, that if nothing is in list of select, show "n/a"
demo
https://codepen.io/Turqus/pen/wPrKrr?editors=1010
template
<div ng-app="test" ng-controller="select">
<select class="form-control" ng-model="selectedBoard" ng-change="changeBoard(selectedBoard)">
<option ng-repeat="item in boards" value="{{$index}}">{{$index}}</option>
</select>
<select class="form-control" ng-model="selectedList">
<option ng-repeat="item in downloadedLists" value="{{$index}}">{{$index}}</option>
</select>
</div>
<option ng-repeat=" item in downloadsLists" >{{$index || "n/a"}}</option>
<select class="form-control" ng-model="selectedList">
<option disabled selected value
ng-show="downloadedLists.length == 0">n/a</option>
<option ng-repeat="item in downloadedLists" value="{{$index}}">{{$index}}</option>
</select>
<option value="">N/A </option>
<option ng-repeat="item in boards" value="{{$index}}">{{$index}}</option>

based on selected option i want to display the Select fields using ionic and angular js

In a parent select option have Option-1,Option-2,Option-3 and also empty also be there. When ever selecting the any option i want to display the below child select fields like if select Option 2 i want display 2 selection fields below like that same, if select empty i don't want to show child selection tags.
This is the code but i don't want to show static way I need to display dynamically
function Controller ($scope) {
$scope.myDropDown = '';
}
<div ng-app ng-controller="Controller">
<select ng-model="myDropDown">
<option value="q"></option>
<option value="one">One</option>
<option value="two">Two</option>
<option value="three">Three</option>
</select>
<select ng-show="myDropDown=='one'" >
<option value="1"></option>
<option value="111">1</option>
<option value="1111">1111</option>
<option value="111">1111111</option>
</select>
<select ng-show="myDropDown=='two'" >
<option value="2"></option>
<option value="222">2</option>
<option value="2222">222</option>
<option value="222">22222</option>
</select>
<select ng-show="myDropDown=='two'" >
<option value="22"></option>
<option value="222222">22</option>
<option value="22222222">222222</option>
<option value="222222">2222222222</option>
</select>
<select ng-show="myDropDown=='three'" >
<option value="3"></option>
<option value="333">3</option>
<option value="3333">333</option>
<option value="333">33333</option>
</select>
<select ng-show="myDropDown=='three'" >
<option value="33"></option>
<option value="333333">33</option>
<option value="33333333">333333</option>
<option value="333333">3333333333</option>
</select>
<select ng-show="myDropDown=='three'" >
<option value="333"></option>
<option value="333333333">333</option>
<option value="333333333333">333333333</option>
<option value="333333333">333333333333333</option>
</select>
</div>
if I well understand your question, you want to select item from the select and then show 1,2 or 3 items in the ionic list, if that is what you want, here is an idea to do that:
<div class="well" ng-show="Lang1 == '1'">
<div class="form-group">
<select class="form-control" id="sel2" ng-model="Lang2" ng-change="changeMe()">
<option ng-option value="1">Language 1</option>
<option ng-option value="2">Language 2</option>
<option ng-option value="3">Language 3</option>
</select>
</div>
<ion-list>
<ion-checkbox ng-if="Lang2>=1">Read</ion-checkbox>
<ion-checkbox ng-if="Lang2>=2">Write</ion-checkbox>
<ion-checkbox ng-if="Lang2>=3">Speak</ion-checkbox>
</ion-list>
</div>
here is an example :
Edit
here is what you wantPS: this is just an example to inspire you, the real solution depends on your needs
Edit
what about this example

Angular dropdown ng-change event

I have a angular dropdown cmbAll and list of cmbFruit in ng-repeat. I want when i change cmbAll selected value on cmbFruit [i] also change. But on load cmbAll is populated with -1 indexselected and cmbFruit [i] with their specific indexex. Below is the code. Please suggest.
<select id="cmbAll" tabindex="" title="" ng-change="onChange()">
<option value="">-Select One-</option>
<option value="1">Apple</option>
<option value="2">Banana</option>
<option value="3">Mango</option>
<option value="4">Papaya</option>
<option value="5">Pear</option>
</select>
<div data-ng-repeat="x in InfoList">
<select id="cmbFruit" name="cmbFruit" ng-model="x.Name"
ng-options="c.Value as c.Text for c in x.List"></select>
</div>
What should be the code for onchange()
Take ng-model for cmbAll
<select id="cmbAll" tabindex="" title="" ng-change="onChange()" ng-model="cmbAll">
<option value="">-Select One-</option>
<option value="1">Apple</option>
<option value="2">Banana</option>
<option value="3">Mango</option>
<option value="4">Papaya</option>
<option value="5">Pear</option>
</select>
<div data-ng-repeat="x in InfoList">
<select id="cmbFruit" name="cmbFruit" ng-model="x.Name"
ng-options="c.Value as c.Text for c in x.List"></select>
</div>
Controller.
$scope.onChange = function()
{
for(var i=0 ; i < $scope.InfoList.length; i++)
{
$scope.InfoList[i].name = $scope.cmbAll
}
}
This will assign the value selected in cmbAll to second dropdown.

AngularJs and <select>: Default selected options are removed

I expect the following code to render a drop down list with the third option selected by default. However, when I bind the select with angularjs, the default selection disappears. Any thought?
var myApp = angular.module('myApp', []);
...
<div>
<select id="myselection" ng-model="selectedColors">
<option value="1" >Red</option>
<option value="2">Blue</option>
<option value="3" selected="selected">Green</option>
</select>
<div>
Selected Colors: {{selectedColors }}
</div>
</div>
Here's a working example: http://jsfiddle.net/TXPJZ/134/
Thanks!
The easiest way to fix your implementation is to use ng-init.
<div>
<select id="myselection" ng-init="selectedColors=3" ng-model="selectedColors">
<option value="1">Red</option>
<option value="2">Blue</option>
<option value="3">Green</option>
</select>
<div>Selected Colors: {{selectedColors }}</div>
</div>
Try it on FIDDLE.
Angular overrides the "selected" property when you bind the select to a model. If you inspect the rendered DOM you will find that a new item has been added:
<option value="? undefined:undefined ?"></option>
In order to automatically select the third option you need to pre-populate the model in scope. There are a few ways to do this, including wrapping the select in a controller:
<div ng-controller="MyCtrl">
<select id="myselection" ng-model="selectedColors">
<option value="1">Red</option>
<option value="2">Blue</option>
<option value="3">Green</option>
</select>
<div>Selected Colors: {{selectedColors }}</div>
And then defining that model in the controller.
var myApp = angular.module('myApp', [])
.controller('MyCtrl', ['$scope', function ($scope) {
$scope.selectedColors = 2;
}]);
Here's a running example.
http://jsfiddle.net/93926/
Alternatively, you could just initialize it using ng-init such as in this example:
<div ng-init="selectedColors=3">
http://jsfiddle.net/9JxqA/1/
EDIT: Removed the selected property in the first example, it's no longer needed.
By adding option with empty value to select and initializing selectedColors to empty string(ng-init="selectedColors=''"), we can see 'select Color' option on top instead of having first color to be selected defaultly:
<div>
<select id="myselection" ng-init="selectedColors=''" ng-model="selectedColors">
<option value="">Select Color</option>
<option value="1">Red</option>
<option value="2">Blue</option>
<option value="3">Green</option>
</select>
<div>Selected Colors: {{selectedColors }}</div>
Try it on Fiddle http://jsfiddle.net/CodecPM/qxyckf7u/
You need to do only two things
1)ng-init="days='noday'"
2)ng-selected="true"
<select class="filtersday" ng-init="days='noday'" ng-model="days">
<option ng-selected="true" value="noday">--Select Day--</option>
You should use single quote to work per
<select ng-model="liveDataType" ng-init="liveDataType='1'" class="form-control input height" required>
<option value="1">Running data</option>
<option value="2">Rest Data</option>
<option value="3">All Data</option>
</select>
Use ng-selected="true"
Check the below code:
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<select ng-model="foo" ng-app >
<option value="1">1</option>
<option ng-selected="true" value="2">2</option>
<option value="3">3</option>
<option value="4">4</option>
<option value="5">5</option>
</select>

Why does ng-selected not work with ng-repeater?

Why is this repeater broken
<select name="quarter" ng-model="Quarter" ng-selected="Quarter" >
<option ng-repeat="v in [1,2,3,4]" value="{{v}}">Q{{v}}</option>
</select>
But not the handwritten way?
<select name="quarter" ng-model="Quarter" ng-change="onQuarterChange()" ng-selected="Quarter">
<option value="1">Q1</option>
<option value="2">Q2</option>
<option value="3">Q3</option>
<option value="4">Q4</option>
</select>
stick with ng-options
<div ng-app>
<h2>Todo</h2>
<div ng-controller="QuarterController">
<select name="quarter" ng-model="Quarter" ng-options="obj.value as obj.text for obj in [{'value': 1,'text' : 'Q1'},{'value':2,'text':'Q2'},{'value':3,'text':'Q3'},{'value':4,'text':'Q4'}]">
</select>
</div>
</div>
function QuarterController($scope) {
$scope.Quarter = 2;
}
http://jsfiddle.net/hDNsm/3/
you might as well define the array in your controller
Notice two things:
'ng-selected' directive should be written on the 'option' element and not on the 'select' element.
the content of the 'ng-selected' attribute should be a condition in which the option is selected. a simple example for this could be if the value of the option equals the select model.
Your code should be something like this:
<select name="quarter" ng-model="Quarter">
<option ng-repeat="v in [1,2,3,4]" value="{{v}}" ng-selected="v==Quarter">Q{{v}}</option>
</select>

Resources