I have a select with ng-options + filter and need to apply a condition to the filter itself. So if a specific condition is met then apply the filter otherwise don't. Thanks in advance.
# example
if (elb_vm.elbInstances[index]['new_record?']){
apply ng-options filter.
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>
<section ng-app="myApp">
<div ng-controller="AppCtrl">
<select ng-model="selected"
ng-options="('Subnet: ' + type) for type in types | filter: '!public' : true">
</select>
</div>
</section>
You can use two select elements, one with filter and other without filter and show them based on ng-if like:
ng-if="elb_vm.elbInstances[index]['new_record?']"
Demo:
var app = angular.module('myApp', []);
app.controller('AppCtrl', function($scope) {
$scope.selected = "";
$scope.condition = false;
$scope.types = ["publicExtra","public","private"];
$scope.toggleCondition = function(){
$scope.condition = !$scope.condition;
}
});
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.7.5/angular.min.js"></script>
<section ng-app="myApp">
<div ng-controller="AppCtrl">
<button ng-click="toggleCondition()">Toggle Condition</button> {{ condition }}<br><br>
<select ng-model="selected" ng-if="condition"
ng-options="('Subnet: ' + type) for type in types | filter: '!public' : true">
</select>
<select ng-model="selected" ng-if="!condition"
ng-options="('Subnet: ' + type) for type in types">
</select>
</div>
</section>
My current code:
<select ng-model="user.userType" ng-required="true" class="form-control">
<option value="pharmacist">Pharmacist</option>
<option value="chief_pharmacist">Chief Pharmacist</option>
<option value="doctor">Doctor</option>
</select>
//sample code
I need 3 user types to be in the select menu and to pass the selected value to the database.
This might help you, I have listed two ways to achieve this, also have mentioned what value you should pass (I prefer passing id rather than name):
Plnkr
You need to use an angular controller with your view, like this.
var myApp = angular.module('myApp', []);
myApp.controller('MyController', ['$scope', function($scope){
$scope.user = {};
$scope.registerUser = function(){
alert($scope.user.userType);
};
}]);
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div ng-app="myApp">
<div ng-controller="MyController">
<select ng-model="user.userType" ng-required="true" class="form-control">
<option value="pharmacist">Pharmacist</option>
<option value="chief_pharmacist">Chief Pharmacist</option>
<option value="doctor">Doctor</option>
</select>
<button ng-click="registerUser()">register</button>
</div>
</div>
I have a select tag which i have loaded the data through angular ng-repeat.
<select ng-model="user.accessRole">
<option ng-selected="{{item.name == user.accessRole.name}}"
ng-repeat="item in accessRoles" value="{{item}}">
{{item.name}}
</option>
</select>
Once I submit this the value I got for accessRole model is as below.
accessRole:"{"id":1,"name":"admin","accessRights":"administrative access"}"
I want this value to be passed without double quotes. That means,
accessRole:{"id":1,"name":"admin","accessRights":"administrative access"}
I tried out this by removing double quotes in value property.(value={{item}})
But it didn't give me the solution.
How can i do this?
It should be like to this.
var app = angular.module('anApp', []);
app.controller('ctrl', function($scope) {
$scope.user = {};
$scope.accessRoles= [{"id":1,"name":"admin","accessRights":"administrative access"}];
$scope.display = function(){
console.log($scope.user);
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.5.0/angular.min.js"></script>
<div ng-app="anApp" ng-controller="ctrl">
<div class="form-group">
<select ng-options="role as role.name for role in accessRoles" ng-model="user.accessRole" ng-change="display()">
</select>
</div>
</div>
use JSON.parse() to convert string to json object
angular.module("app",[])
.controller("ctrl",function($scope){
$scope.user = {};
$scope.accessRoles= [{"id":1,"name":"admin","accessRights":"administrative access"}]
$scope.submit = function(){
console.log($scope.user)
$scope.user.accessRole = JSON.parse( $scope.user.accessRole)
console.log($scope.user)
}
})
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="app" ng-controller="ctrl">
<select ng-model="user.accessRole">
<option ng-repeat="item in accessRoles" value="{{item}}">
{{item.name}}
</option>
</select>
<button ng-click="submit()">click</button>
</div>
I have an object with property: value structure with should be used for the ng-options to create the select dropdown. I also have a ng-model variable which contains the property which should be currently selected. The problem is that I can't figure out how to fix the initial selection.
You can find the code here
<select ng-model="selectedCar" ng-options="id as value for (id, value) in cars track by id">
http://jsbin.com/wukanenozu/1/edit?html,js,output
Do not use "track by"
Do not use as and track by in the same expression. They are not
designed to work together.
<select ng-model="selectedCar" ng-options="id as value for (id, value) in cars ">
</select>
DEMO
var app = angular.module('myApp', []);
app.controller('myCtrl', function($scope) {
$scope.cars = {
frd : "Ford",
ft1 : "Fiat",
vlv : "Volvo"
}
$scope.selectedCar = 'ft1';
});
<!DOCTYPE html>
<html>
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.4.8/angular.min.js"></script>
<body>
<div ng-app="myApp" ng-controller="myCtrl">
<p>Select a car:</p>
<select ng-model="selectedCar" ng-options="id as value for (id, value) in cars ">
</select>
<h1>You selected model: {{selectedCar}}</h1>
</div>
<p>This example demonstrates the use of an object as the data source when creating a dropdown list.</p>
</body>
</html>
I have in my .html page a dropdown list,
Dropdown:
<select ng-model="blisterPackTemplateSelected" data-ng-options="blisterPackTemplate as blisterPackTemplate.name for blisterPackTemplate in blisterPackTemplates">
<option value="">Select Account</option>
</select>
I want to execute an action when the user select a value. So In my controller I did:
Controller:
$scope.$watch('blisterPackTemplateSelected', function() {
alert('changed');
console.log($scope.blisterPackTemplateSelected);
});
But the changing the value in the dropdownlist doesn't trigger the code : $scope.$watch('blisterPackTemplateSelected', function()
As a result I tried another method with a : ng_change = 'changedValue()' on the select tag
and
Function:
$scope.changedValue = function() {
console.log($scope.blisterPackTemplateSelected);
}
But the blisterPackTemplateSelected is stored into a child scope. I read that the parent can't get access to the child scope.
What is the correct/best way to execute something when a selected value in a dropdown list changes? If it's method 1, what am I doing wrong with my code?
as Artyom said you need to use ngChange and pass ngModel object as argument to your ngChange function
Example:
<div ng-app="App" >
<div ng-controller="ctrl">
<select ng-model="blisterPackTemplateSelected" ng-change="changedValue(blisterPackTemplateSelected)"
data-ng-options="blisterPackTemplate as blisterPackTemplate.name for blisterPackTemplate in blisterPackTemplates">
<option value="">Select Account</option>
</select>
{{itemList}}
</div>
</div>
js:
function ctrl($scope) {
$scope.itemList = [];
$scope.blisterPackTemplates = [{id:1,name:"a"},{id:2,name:"b"},{id:3,name:"c"}];
$scope.changedValue = function(item) {
$scope.itemList.push(item.name);
}
}
Live example: http://jsfiddle.net/choroshin/9w5XT/4/
I may be late for this but I had somewhat the same problem.
I needed to pass both the id and the name into my model but all the orthodox solutions had me make code on the controller to handle the change.
I macgyvered my way out of it using a filter.
<select
ng-model="selected_id"
ng-options="o.id as o.name for o in options"
ng-change="selected_name=(options|filter:{id:selected_id})[0].name">
</select>
<script>
angular.module("app",[])
.controller("ctrl",['$scope',function($scope){
$scope.options = [
{id:1, name:'Starbuck'},
{id:2, name:'Appolo'},
{id:3, name:'Saul Tigh'},
{id:4, name:'Adama'}
]
}])
</script>
The "trick" is here:
ng-change="selected_name=(options|filter:{id:selected_id})[0].name"
I'm using the built-in filter to retrieve the correct name for the id
Here's a plunkr with a working demo.
Please, use for it ngChange directive.
For example:
<select ng-model="blisterPackTemplateSelected"
ng-options="blisterPackTemplate as blisterPackTemplate.name for blisterPackTemplate in blisterPackTemplates"
ng-change="changeValue(blisterPackTemplateSelected)"/>
And pass your new model value in controller as a parameter:
ng-change="changeValue(blisterPackTemplateSelected)"
Best practise is to create an object (always use a . in ng-model)
In your controller:
var myObj: {
ngModelValue: null
};
and in your template:
<select
ng-model="myObj.ngModelValue"
ng-options="o.id as o.name for o in options">
</select>
Now you can just watch
myObj.ngModelValue
or you can use the ng-change directive like so:
<select
ng-model="myObj.ngModelValue"
ng-options="o.id as o.name for o in options"
ng-change="myChangeCallback()">
</select>
The egghead.io video "The Dot" has a really good overview, as does this very popular stack overflow question: What are the nuances of scope prototypal / prototypical inheritance in AngularJS?
You can pass the ng-model value through the ng-change function as a parameter:
<select
ng-model="blisterPackTemplateSelected"
data-ng-options="blisterPackTemplate as blisterPackTemplate.name for blisterPackTemplate in blisterPackTemplates"
ng-change="changedValue(blisterPackTemplateSelected)">
<option value="">Select Account</option>
</select>
It's a bit difficult to know your scenario without seeing it, but this should work.
You can do something like this
<html ng-app="App" >
<script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.3.14/angular.min.js"></script>
<script>
angular.module("App",[])
.controller("ctrl",['$scope',function($scope){
$scope.changedValue = function(item){
alert(item);
}
}]);
</script>
<div >
<div ng-controller="ctrl">
<select ng-model="blisterPackTemplateSelected" ng-change="changedValue(blisterPackTemplateSelected)" >
<option value="">Select Account</option>
<option value="Add">Add</option>
</select>
</div>
</div>
</html>
instead of add option you should use data-ng-options.I have used Add option for testing purpose
I am late here but I resolved same kind of problem in this way that is simple and easy.
<select ng-model="blisterPackTemplateSelected" ng-change="selectedBlisterPack(blisterPackTemplateSelected)">
<option value="">Select Account</option>
<option ng-repeat="blisterPacks in blisterPackTemplates" value="{{blisterPacks.id}}">{{blisterPacks.name}}</option>
and the function for ng-change is as follows;
$scope.selectedBlisterPack= function (value) {
console.log($scope.blisterPackTemplateSelected);
};
You will get selected option's value and text from list/array by using filter.
editobj.FlagName=(EmployeeStatus|filter:{Value:editobj.Flag})[0].KeyName
<select name="statusSelect"
id="statusSelect"
class="form-control"
ng-model="editobj.Flag"
ng-options="option.Value as option.KeyName for option in EmployeeStatus"
ng-change="editobj.FlagName=(EmployeeStatus|filter:{Value:editobj.Flag})[0].KeyName">
</select>
I had the same issue and found a unique solution. This is not best practice, but it may prove simple/helpful for someone. Just use jquery on the id or class or your select tag and you then have access to both the text and the value in the change function. In my case I'm passing in option values via sails/ejs:
<select id="projectSelector" class="form-control" ng-model="ticket.project.id" ng-change="projectChange(ticket)">
<% _.each(projects, function(project) { %>
<option value="<%= project.id %>"><%= project.title %></option>
<% }) %>
</select>
Then in my Angular controller my ng-change function looks like this:
$scope.projectChange = function($scope) {
$scope.project.title=$("#projectSelector option:selected").text();
};
I have tried some solutions,but here is basic production snippet. Please, pay attention to console output during quality assurance of this snippet.
Mark Up :
<!DOCTYPE html>
<html ng-app="appUp">
<head>
<title>
Angular Select snippet
</title>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" />
</head>
<body ng-controller="upController">
<div class="container">
<div class="row">
<div class="col-md-4">
</div>
<div class="col-md-3">
<div class="form-group">
<select name="slct" id="slct" class="form-control" ng-model="selBrand" ng-change="Changer(selBrand)" ng-options="brand as brand.name for brand in stock">
<option value="">
Select Brand
</option>
</select>
</div>
<div class="form-group">
<input type="hidden" name="delimiter" value=":" ng-model="delimiter" />
<input type="hidden" name="currency" value="$" ng-model="currency" />
<span>
{{selBrand.name}}{{delimiter}}{{selBrand.price}}{{currency}}
</span>
</div>
</div>
<div class="col-md-4">
</div>
</div>
</div>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js">
</script>
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js"></script>
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js"></script>
<script type="text/javascript" src="//ajax.googleapis.com/ajax/libs/angularjs/1.5.7/angular.min.js">
</script>
<script src="js/ui-bootstrap-tpls-2.5.0.min.js"></script>
<script src="js/main.js"></script>
</body>
</html>
Code:
var c = console;
var d = document;
var app = angular.module('appUp',[]).controller('upController',function($scope){
$scope.stock = [{
name:"Adidas",
price:420
},
{
name:"Nike",
price:327
},
{
name:"Clark",
price:725
}
];//data
$scope.Changer = function(){
if($scope.selBrand){
c.log("brand:"+$scope.selBrand.name+",price:"+$scope.selBrand.price);
$scope.currency = "$";
$scope.delimiter = ":";
}
else{
$scope.currency = "";
$scope.delimiter = "";
c.clear();
}
}; // onchange handler
});
Explanation:
important point here is null check of the changed value, i.e. if value is 'undefined' or 'null' we should to handle this situation.