This is my Angular 2 Code:
HTML:
<select class="form-control" [(ngModel)]="wrapupData.assignToEmployee">
<option value="" disabled>Choose Status</option>
<option *ngFor="let emp of masterWrapupLov.employeeList"
[value]='emp.id'>{{emp?.name}}</option>
</select>
where wrapupData.assignToEmployee is a string, masterWrapupLov.employeeList is an array of Objects comprising id: string and name: string.
This code works perfectly fine selecting the option to make it reflect in the wrapupData.assignToEmployee model.
What I wanted to achieve is to select a default option when loading the DOM and update the model if the option is changed. I tried using [selected] comparing emp.id with the value I wanted to select, it did work in the UI but is not getting binded with the model as and when I change it. I tried using a default value using the model, that too is not working as it should and is not getting binded after the first default binding. I don't know if I'm clear enough, but I tried many methods that people have already suggested but nothing seems to work.
Related
I am using chosen.jquery.js for select field
<select chosen multiple data-placeholder="Select Body Part(s)"
ng-options="option.Name as option.Name for option in BodyPartList" ng-model="Body_Part">
<option value="" disabled>Select Body Part(s)</option>
</select>
But It shows only data-placeholder value in case of no data in model.
I want to show "Select Body Part(s)" as a option in list.
And user must not select this. Reason is that, I want to add dynamic "Unknown" value in list of Body_Parts. But it not reflect in list.
Same work for select having single selection.
I'm not seeing any problems with your code, as such. Like, I'm trying it and getting the visual behaviour I think you're wanting? Am I missing something?
Html just yours with ng-app etc, javascript is:
var myApp = angular.module('myApp', ['localytics.directives']);
myApp.controller('MyController', function($scope) {
$scope.BodyPartList = [
{ Name: "Arm" },
{ Name: "Leg" }
];
$scope.Body_Part = [];
});
Not sure if data-placeholder is actually doing anything.
Fiddle: http://jsfiddle.net/7187f6d9/
That said, it's not "working". In the fiddle I put a regular select box alongside the chosen one, and the chosen one doesn't seem to be writing to the ng-model correctly. I'm not sure what's up with that.
You can choose the below option
https://harvesthq.github.io/chosen/#optgroup-support
or push another item to the top of the array from server side as your custom label and disable it on client side with the help of ng-if and $index properties of ng-repeat and angularjs. If this make sense then its fine else i can give you a demo.
I hope your query is, you want show a place holder as current selected value but user shouldn't be able to select it.
Instead of making it disabled, make ithidden. Then display an error if a user doesn't select any other options, using the value of placeholder option.
A sample snippet is added below. If value of select is Error, write a case to throw a error back to user.
<select>
<option value="Error" hidden>Select any Company</option>
<option value="Toyota">Toyota</option>
<option value="Nissan">Nissan</option>
<option value="BMW">BMW</option>
</select>
Hope this helps! If not, ping me with your query. :)
<select ng-model="myModel" id="searchAsset" class="search">
<option ng-repeat="asset in assettype" ng-click="assetclick()" value="{{asset}}"></option>
</select>
<select class="search" id="searchLevel">
<option class="chooseLevel" ng-repeat="level in levellist" value="{{level}}"></option>
</select>
While performing some logic on second dropdown, I want to fetch the selected value of the first dropdown or vice-versa. How can I do this?
I tried using $("#searchLevel").value and $("#searchLevel option:selected").text()
The direct answer to this question is to use the .val() method for jQuery like so:
var selectedVal = $("#searchLevel").val();
However, the slightly less direct, but true answer is that you should not be doing anything like this in an angular app - changes in the dom should only be affecting your view model.
When your using angular, jquery is really not required.
As per your code, The first select menu value will be stored in the ng-model attribute value i.e. myModel.
In your second select menu, specific the ng-model as well. You can just fetch the value of the drop down menu by calling ng-model name.
<select class="search" id="searchLevel" ng-model="secondSelect">
<option class="chooseLevel" ng-repeat="level in levellist" value="{{level}}"></option>
</select>
For example,
If you want to access the value inside your controller on change event, then
$scope.changeEventhandlerForFirstSelect = function() {
// $scope.myModel will contain the value
}
Similarly, for second select menu $scope.secondSelect will give that value.
try
$("#searchLevel").val();
with: $("#searchLevel option:selected").text() you get the text not the value.
I'm banging my head against the wall on this one.
I have an array of objects that will be used to populate a select drop down:
CardCount = [{"ClientId": "0010", "Description": "0010 (206 Members)"}, {"ClientId": "0051", "Description": "0051 (1 Member)"}, ........]
When I attempt to use ng-options, the value of the option is set to the index, not to the ClientId as desired. To get the value in each option to be the ClientId, I have to use a ng-repeat in the options. Here is my html:
<select ng-model="CurrentClient">
<option ng-repeat="item in CardCount" value="{{item.ClientId}}">{{item.Description}}</option>
</select>
Initially, all is well, the select and options are generated correctly, and the first option is correct. Now, when a certain button is clicked somewhere else on the page, it becomes necessary to recreate this select and options with a smaller array of similar objects. However, doing so creates a blank option with a value of "? string:0010 ?". This is the option that is selected. Again, I cannot use ng-options to correct this problem because doing so doesn't set the value attribute in the option tags correctly. So, I added this to the option tag:
<option ng-repeat="item in CardCount" value="{{item.ClientId}}" ng-selected="CurrentClient == item.ClientId">{{item.Description}}</option>
Now, that does mark the correct option as selected. However, the drop down still shows the blank option. Here's the rendered html:
<select ng-model="CurrentClient">
<option value="? string:0010 ?"></option>
<option value="0010" selected="selected">0010 (206 Members)</option>
</select>
As you can see, it sets the correct option to selected. However, it sets it to selected="selected", and not just selected. When I inspect element and change selected="selected" to selected (remove the equals and everything after it), the drop down then correctly displays the correctly selected option.
Again, initially the select and options work great. The problem seems to happen only after the array that the select is created with is changed. How can I get this select and options working correctly after I change the array, and not show that first blank option?
Thanks!
Changed you option element to set value by default.
<option ng-repeat="item in CardCount track by item.ClientId"
value="{{item.ClientId}}">{{item.Description}}</option>
Hope this could help you. Thanks.
ng-options is definitely the way to go:
<select ng-model="selected.ClientId" ng-options="it.ClientId as it.Description for it in clientList">
<option value="">-</option>
</select>
I'm developing an Angular app and I have a form set up which I need to run validation on. One of the form elements is a <select>, like this:
<select name="noOfPeople" ng-model="noOfPeople">
<option>No of people*</option>
<option ng-repeat="amt in [] | range:12">{{ amt +1 }}</option>
</select>
Because the design doesn't allow for labels on form elements, the label is essentially the first option in the select element. I want this control to be invalid unless it matches the following pattern: /^[0-9]$/.
I have tried using ng-pattern on the <select> however that doesn't seem to have any effect, Angular always thinks the control is valid.
The only other way I can think of doing it is writing a function in my controller to check if this control is valid and block the form from submitting if it's not. But I don't want to introduce a random validation function into my nice clean controller.
What's the best way to deal with this?
You can use the ng-options attribute here, rather than ng-repeat, and attribute a blank value to any options you wish to ignore. For example:
<select name="noOfPeople" ng-model="noOfPeople" ng-options="value for value in [] | range:12">
<option value="">No of people*</option>
<option value="">This won't count either!</option>
</select>
<p>Selected Value: {{noOfPeople}}<p>
If you explicitly require the regex checking to occur, you could write a filter and add it to the ng-options.
So, What I'm trying to do is fairly simple with vanilla JS, but I'm using AngularJS and I would like to know how to do it the best way within the framework. I want to update the selected options in a multiple select box. I do not want to add or remove any of the options. Here is what my HTML looks like:
<select multiple>
<option value="1">Blue</option>
<option value="2">Green</option>
<option value="3">Yellow</option>
<option value="4">Red</option>
</select>
Using the following array, I'd like to programmatically select/deselect options from this list:
[{id:1, name:"Blue"},{id:4, name:"Red"}]
When I set this array in the scope, I want the select box to deselect anything that is not Blue or Red and select Blue and Red. The standard response that I've seen on the Google Groups is to use ng-repeat. However, I can't recreate the list every time because the list of selected values is incomplete. As far as I can tell, AngularJS has no mechanism for this, and I'm at a loss as to how I would do this without resorting to using jQuery.
ngModel is pretty awesome! If you specify the indexes as a model selectedValues
<select multiple ng-model="selectedValues">
built from your list (selected) in a $watch
$scope.$watch('selected', function(nowSelected){
// reset to nothing, could use `splice` to preserve non-angular references
$scope.selectedValues = [];
if( ! nowSelected ){
// sometimes selected is null or undefined
return;
}
// here's the magic
angular.forEach(nowSelected, function(val){
$scope.selectedValues.push( val.id.toString() );
});
});
ngModel will automatically select them for you.
Note that this data binding is one-way (selected to UI). If you're wanting to use the <select> UI to build your list, I'd suggest refactoring the data (or using another $watch but those can be expensive).
Yes, selectedValues needs to contain strings, not numbers. (At least it did for me :)
Full example at http://jsfiddle.net/JB3Un/