How can I pre-select an option, when I have the options repeated using ng-repeat, as so:
<select data-ng-model="info.country" ng-change="changeCountry()" name="country" required>
<!-- <option selected disabled hidden value=''></option> -->
<option data-ng-repeat="country in countries" value="{{country.id}}">{{country.countryName}}</option>
</select>
The data-ng-model returns the number 3 , the method ng-change="changeCountry()" uses the same number in its implementation.
I need the pre-selected item to be 3 and not 1 (this will be reduced by 1, since it is an array, but I think you get the idea)
I need to pre-select the item. Is this possible, and how can one achieve such result?
CodePen here.
ng-repeat on <options> converts id to string. This is a reason why it doesn't work.
{"country":3} vs {"country":"3"}
You can solve it by using ng-options:
<select data-ng-model="info.country"
ng-change="changeCountry()" name="country"
ng-options="c.id as c.countryName for c in countries"
required>
</select>
I managed to achieve this by using ng-options:
<select ng-options="country.id as country.countryName for country in countries" ng-model="info.country" ng-change="changeCountry()" name="country" required></select>
Related
Angular < 1.4 works with ng-options shown as such:
<select ng-options="option.value as option.label for option in options" ng-model="selectedValue">
With the following array of options:
[{ value:"4_220588",label:"dropdown 1-test value 1"},{value:"4_220589",label:"dropdown 1-test value 2"}]
If you look at the resultant HTML is is as you would expect:
<select ng-options="option.value as option.label for option in options" ng-model="selectedValue" class="ng-pristine ng-valid ng-touched">
<option value="" class="">-- SELECT ONE --</option>
<option value="0" label="dropdown 1-test value 1">dropdown 1-test value 1</option>
<option value="1" label="dropdown 1-test value 2">dropdown 1-test value 2</option>
</select>
As soon as you change the angular version to Angular 1.4+, the option value attribute get's messed up. Here is the output with the same ng-options using a newer version of angular:
<select ng-options="option.value as option.label for option in options" ng-model="selectedValue" class="ng-pristine ng-valid ng-empty ng-touched">
<option value="" class="" selected="selected">-- SELECT ONE --</option>
<option label="dropdown 1-test value 1" value="string:4_220588">dropdown 1-test value 1</option>
<option label="dropdown 1-test value 2" value="string:4_220589">dropdown 1-test value 2</option>
</select>
What is the solution to getting the value to show up still as the index of the array?
Here is the plnkr: http://plnkr.co/edit/3CTUI9b9ntTGWhXDNQI5?p=preview
Your application logic should not be sensitive to the value attribute in the dropdown, because ng-model will set the model correctly regardless of what is output in the HTML. If you application logic does expect a specific format for this attribute, you have 3 ways to deal with this breaking change.
Use ng-repeat instead of ng-options. This is the least recommended option, as it changes the way the select lists work significantly.
Use a track by clause to enforce the key format that you are expecting, i.e. option.value as option.label for option in options track by option.value. This presumes that option.value exists and is the value you wish to represent. http://plnkr.co/edit/TSXfkpf1lhsE9QYa2NAc?p=preview
Change your application logic to expect the hashkey instead, or preferably correct the logic so that it only relies upon ng-model.
One solution would be to use ng-repeat over the options.
<select ng-model="vm.selectedValue">
<option value="" selected disabled>-- SELECT ONE --</option>
<option ng-repeat="option in options"
value="$index"
ng-selected="option === vm.selectedValue">
{{option.label}}
</option>
</select>
Here is your updated Plunkr.
This should do the trick:
<select ng-options="index as option.label for (index, option) in options2" ng-model="vm.selectedValue">
<option value="">-- SELECT ONE --</option>
</select>
On render the value of the selected option would be string:index but will output the desired value without the type included. Here is your edited plunker with the expected result in the Selected Value:
Plunker
I have some doubts with using ngoptions. I am not able to set value attribute for the option items.Here is example plunker
$scope.ListOfValues=[{optiontext:'Active',optionvalue:'opt1'},
{optiontext:'inactive',optionvalue:'opt2'},
{optiontext:'terminated',optionvalue:'opt3'}];
And my html code is
<select id="emptype" ng-model="empstatus" ng-options="emp.optionvalue as emp.optiontext for emp in ListOfValues">
</select>
The generated html is as shown below.
<select id="emptype" ng-model="empstatus" ng-options="emp.optionvalue as emp.optiontext for emp in ListOfValues" class="ng-valid ng-dirty ng-valid-parse ng-touched">
<option value="string:opt1" label="Active">Active</option>
<option value="string:opt2" label="inactive">inactive</option>
<option value="string:opt3" label="terminated">terminated</option>
</select>
I was expecting it to be as shown below
<select id="emptype" ng-model="empstatus" ng-options="emp.optionvalue as emp.optiontext for emp in ListOfValues" class="ng-valid ng-dirty ng-valid-parse ng-touched">
<option value="opt1" label="Active">Active</option>
<option value="opt2" label="inactive">inactive</option>
<option value="opt3" label="terminated">terminated</option>
</select>
So why does it add string: to the value attribute? How i can get my desired output?
It has to deal with 1.3 -> 1.4 Angular version API change - if you check this plunkr (v.1.3) it will show just indexes as values of the <option> tags.
To make it also work with Angular +1.4 you should add the following statement to your ng-options expression track by emp.optionvalue. See this plunkr (v.1.4) .
<select id="emptype"
ng-model="empstatus"
ng-options="emp.optionvalue as emp.optiontext for emp in ListOfValues track by emp.optionvalue">
</select>
But the value of the ng-model is correctly updated in both cases, see {{empstatus}} in template of my examples.
So as #ExplosionPills say that should not be a issue.
When I try the following code:
<select name="test" id="test" ng-model="test"
ng-options="c.id as c.n for c in [{n:'t1',id:'123'}]">
</select>
I get
<select name="test" id="test" ng-model="test" >
<option value="0" selected="selected" label="t1">t1</option>
</select>
Why the value is not '123' per angular's ng-options syntax.
Thanks,
That is because when the options are created by ng-options by iterating over the array, the value of each option element is the loop couter. However your test variable contains the value item.age. You can check it by printing it like {{test}}.
You can achieve what you want like this
<select name="test" id="test" ng-model="test" >
<option ng-repeat="c in [{n:'t1',id:'123'}]" value="{{c.id}}" >{{c.n}}</option>
</select>
I for the life of me cannot figure out how to set both the labal and the value of a select using an array
I have an array of countries
$scope.countries = [
{abbr:"US", name:"United States"},
{abbr:"CA", name:"Canada"},......
]
I want the select to generate as such
<select>
<option value="US">United States</option>
<option value="CA">Canada</option>
</select>
However the closest I have been able to achieve is
<select>
<option value="1">United States</option>
<option value="2">Canada</option>
</select>
I've achieved that using
<select class="form-control" ng-options="country.Name for country in countries" ng-model="selectedCountry">
How do I assign the label AND the value using ng-options?
Without testing I think it's just
ng-options="country.abbr as country.name for country in countries"
For exact structure, you need to do ng-repeat through your <option><option> ng-options will never set the value which which you want, It will always set 0,1,2,3 etc.
HTML
<select ng-model="selectedCountry">
<option ng-repeat="country in countries" value="{{country.abbr}}" ng-bind="country.name"></option>
</select>
JSFiddle
Hope this could help you, Thanks.
I would like to have a select with a placeholder in angularjs with bootstrap. The solutions I have found do not work with angular
Here is my angular markup:
<select ng-model="myModel"
ng-options="p.name for p in ..."
class="form-control list-selector required">
<option value='' disabled selected>Please Choose</option>
</select>
If someone has a working solution...
thanks :)
You need to add an empty option to your select:
<option value="">- Please Choose -</option>
Here is a working example: http://jsfiddle.net/DianaNassar/FShdc/
For Angularjs Versions and reactive forms , if you are using ngValue to bind values in options , the following type of solution will work:
<option value='' selected ng-value="null">Please Choose</option>
For Angular 2+ Versions something like this will work-
<select class="form-control"
formControlName="roomType"
(change)="changeRoomType($event)">
<option [ngValue]="null" selected>Room Type</option>
<option *ngFor="let room of roomTypes" [ngValue]="room">{{room}}</option>
</select>
For reference, check this link out-https://netbasal.com/angular-quick-tip-how-to-show-a-placeholder-in-select-control-bab688f98b98