Dynamically set the value of ui-sref Angularjs

Question

I have searched for a similar question but the ones that came up seem slightly different. I am trying to change the ui-sref='' of a link dynamically (this link points to the next section of a wizard form and the next section depends on the selection made on the dropdown list). I am simply trying to set the ui-sref attribute depending on some selection in a select box. I am able to change the ui-sref by binding to a scope attribute which is set when a selection is made. however the link does not work, is this possible at all? thanks

  <a ui-sref="form.{{url}}" >Next Section</a>

and then in my controller, I set the url parameter this way

switch (option) {
  case 'A': {
    $scope.url = 'sectionA';
  } break;
  case 'B': {
    $scope.url = 'sectionB';
  } break;
}

Alternatively, I used directives to get it to work by generating the hyperlink with the desired ui-sref attribute according to the option selected on the select box (drop down).

Hhowever this means I have to re-create the link each time a different option is selected from the selectbox which causes an undesirable flickering effect. My question is this, is it possible to change the value of the ui-sref as I tried doing above by simpling changing the value of url in my controller or do I have to re-create the entire element using a directive each time a selection is made as I have done below? (just showing this for completeness)

Select option directive (this directive generates the link directive)

define(['app/js/modules/app', 'app/js/directives/hyperLink'], function (app) {
app.directive('selectUsage', function ($compile) {

    function createLink(scope,element) {
        var newElm = angular.element('<hyper-link></hyper-link>');
        var el = $(element).find('.navLink');
        $(el).html(newElm);
        $compile(newElm)(scope);
    }

    return {

        restrict: 'E',
        templateUrl: '/Client/app/templates/directives/select.html'

        ,link: function (scope, element, attrs) {

            createLink(scope, element);

            element.on('change', function () {
                createLink(scope,element);
            })
        }
    }
})

Hyperlink directive

define(['app/js/modules/app'], function (app) {
app.directive('hyperLink', function () {

    return {
        restrict: 'E',
        templateUrl: '/Client/app/templates/directives/hyperLink.html',
        link: function (scope, element, attrs) { }
    }

})

Hyperlink template

<div>
    <button ui-sref="form.{url}}">Next Section</button>
</div>

Answer 1

Looks like this is possible to do after all.

A breadcrumb on GitHub by one of the ui-router authors led me to try the following:

<a ng-href="{{getLinkUrl()}}">Dynamic Link</a>

Then, in your controller:

$scope.getLinkUrl = function(){
  return $state.href('state-name', {someParam: $scope.someValue});
};

Turns out, this works like a charm w/ changing scoped values and all. You can even make the 'state-name' string constant reference a scoped value and that will update the href in the view as well :-)

Answer 2

I managed to implement it this way (I'm using the controllerAs variant though - not via $scope).

Template

<button ui-sref="main({ i18n: '{{ ctrlAs.locale }}' })">Home</button>

Controller

var vm = this;
vm.locale = 'en'; // or whatever dynamic value you prepare

Also see the documentation to ui-sref where you can pass params:

https://github.com/angular-ui/ui-router/wiki/Quick-Reference#ui-sref

Answer 3

Take a look in this issue #2944.

The ui-sref doesn't watch the state expression, you can use ui-state and ui-state-params passing the variable.

  <a data-ui-state="selectedState.state" data-ui-state-params="{'myParam':aMyParam}">
       Link to page {{selectedState.name}} with myParam = {{aMyParam}}
  </a>

Also a quickly demo provided in the ticket.

Answer 4

<a ng-click="{{getLinkUrl({someParam: someValue})}}">Dynamic Link</a>

$scope.getLinkUrl = function(value){
  $state.go('My.State',{someParam:value});

}

It returns an object

Answer 5

The best approach is to make use of uiRouter's $state.go('stateName', {params}) on button's ng-click directive. And disable the button if no option is selected.

HTML

<select ng-model="selected" ng-options="option as option.text for option in options"></select>
<button ng-disabled="!selected" type="button" ng-click="ctrl.next()">Next</button>

Controller

function Controller($scope, $state){
    this.options = [{
        text: 'Option One',
        state: 'app.one',
        params: {
            param1: 'a',
            param2: 'b'
        }
    },{
        text: 'Option Two',
        state: 'app.two',
        params: {
            param1: 'c',
            param2: 'd'
        }
    },{
        text: 'Option Three',
        state: 'app.three',
        params: {
            param1: 'e',
            param2: 'f'
        }
    }];

    this.next = function(){
        if(scope.selected){
            $state.go($scope.selected.state, $scope.selected.params || {});
        }
    };
}

State

$stateProvider.state('wizard', {
    url: '/wizard/:param1/:param2', // or '/wizard?param1&param2'
    templateUrl: 'wizard.html',
    controller: 'Controller as ctrl'
});

Answer 6

this is just working for me

in controller

$scope.createState = 'stateName';

in view

ui-sref="{{ createState }}"