When I login on my app, I want the login and signup button to disappear from the nav so I am using ng-hide directive if the login was successful and a token was received from the server, which I store in the cookies.
Nav is part of the index.html file.
Because I am using angular routing, when login is successful, index.html is not loaded again instead I render the home page through ng-view directive.
The problem is I have to refresh the page for ng-hide to work. I am assuming it is because ng-hide is part of index.html page, which does not get reloaded.
Hoping there is a bette solution than refreshing the page every time someone logs in.
Here is some of my relevant code.
HTML
<!-- Navigation -->
<nav class="navbar navbar-custom navbar-fixed-top" role="navigation">
<div class="container">
<div class="navbar-header">
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target=".navbar-main-collapse">
<i class="fa fa-bars"></i>
</button>
<a class="navbar-brand page-scroll" href="#/">
<i class="fa fa-play-circle"></i> <span class="light">Webnar</span>
</a>
</div>
<!-- Collect the nav links, forms, and other content for toggling -->
<div class="collapse navbar-collapse navbar-right navbar-main-collapse">
<ul class="nav navbar-nav">
<!-- Hidden li included to remove active class from about link when scrolled up past about section -->
<li class="hidden">
</li>
<li>
<a class="page-scroll" href="#about">Webinars</a>
</li>
<li ng-hide="token">
<a class="page-scroll" href="#/login">Login</a>
</li>
<li ng-show="token">
<a class="page-scroll " href="#/create">Add a webinar</a>
</li>
<li ng-hide="token">
<a class="page-scroll btn btn-default " href="#/signup">Sign Up</a>
</li>
<li ng-show="token" >
<a class="page-scroll btn btn-default" ng-click="logOut()">Logout</a>
</li>
</ul>
</div>
<!-- /.navbar-collapse -->
</div>
<!-- /.container -->
</nav>
App.js
var webinarApp = angular.module('webinarApp', ['ngCookies', 'ngRoute']);
webinarApp.config(function($routeProvider){
$routeProvider
.when('/', {
templateUrl: './home.html',
controller: 'mainController'
})
.when('/signup', {
templateUrl: './signup.html',
controller: 'mainController'
})
.when('/login', {
templateUrl: './login.html',
controller: 'mainController'
})
.when('/create', {
templateUrl: './create.html',
controller: 'mainController'
})
});
webinarApp.controller('mainController', ['$scope', '$http', '$cookies', '$location', function($scope, $http, $cookies, $location){
$scope.welcomeMessage = '';
$scope.users = [];
$scope.searchQuery = "";
$scope.orderByField = 'name';
$scope.newUser = {};
$scope.logInUser = {};
$scope.webinars = [];
$scope.newWebinar = {};
$scope.isDisabled = false;
// ============== Users ================
$scope.getUsers = function(){
$http.get('/api/users').then(function(response){
$scope.users = response.data;
});
};
$scope.getUsers();
$scope.createUser = function(){
$http.post('/api/users', $scope.newUser).then(function(response){
console.log(response.data)
$scope.users.push(response.data);
$scope.newUser = {};
$location.path('/login');
});
};
$scope.obtainToken = function(){
$http.post("/api/users/authentication_token", $scope.logInUser).then(function(reponse){
$scope.token = reponse.data.token;
console.log($scope.token);
$cookies.put('token', $scope.token);
$location.path('/')
});
};
It's because you put the navbar on the index page. It's not a template that is loaded by the route module. So it's not related to any route and controller that are bind with it. Controller declared in routes only applies for template that are loaded by the route module.
To bind a controller whatever the route is use ng-controller directive. Put it on your <nav> element
Note if you use the "as controller" syntax you must do in controller :
this.isDisabled
instead of
$scope.isDisabled
Documentation : https://docs.angularjs.org/#!/api/ng/directive/ngController
If you need to update datas to that controller with the rest of the application. Use $rootScope. If you use 'ctrl as' syntax, the easier is to do :
this.$rootScope=$rootScope;
If you don't like this use $watch to watch for changes and rebind the currentValue to the controller :
$rootScope.watch('myParameter', function(new){
this.myParameter = new;
});
AND DON'T FORGET TO INITIALIZE THE VARIABLE IN $ROOTSCOPE. Or the variable will end up in a child scope that won't be visible for your navbar's controller.
You should declare $scope.token with your other variable declarations. It does not exist in the scope when you are initially setting your ng-hide.
$scope.isDisabled = false;
$scope.token;
Have you tried using $scope.$apply() ???
$scope.$apply(function() {
$scope.token = <whatever value>;
})
Ok i think one way to do this would be to add a controller for nav say navbarController.
<nav ng-controller="navbarController">...</nav>
Inject $rootScope into both maincontroller and navbarController.
then in mainController whenever you need to change value of token, do this
$rootScope.$emit('tokenValueChange', <value>);
then in navbarController add,
$rootScope.$on('tokenValueChange', function(newValue) {
$scope.token = newValue;
})
I am not sure if this is a perfect method but this should work.
I had a similar problem as OP (viditsaxena), and solved it the same way he did. Like him, I had ng-hide in my nav which was located in index.html. My ng-hides worked correctly on initial page load, but when I tried to navigate to a different view, my ng-hide's would not work until I refreshed the page.
My solution: The same way #viditsaxena describes in his comments under the accepted answer (use $rootScope instead of $scope), but I thought I'd put my actual code here to show you how I made it work in my app.js file:
I went from this (ng-hide required refresh to load after I navigated away from the original view):
app.controller('routeController', ['$scope', '$location', function($scope, $location) {
$scope.showPortfolioHeader = $location.path() === '/jcRealty';
}]);
To this (now my ng-hides don't require a refresh after I navigate away from my first view):
app.controller('routeController', ['$rootScope', '$location', function($rootScope, $location) {
$rootScope.showPortfolioHeader = $location.path() === '/jcRealty';
}]);
The accepted answer got me part of the way there, but I had a hard time deciphering some of the grammar in his response. My own testing confirmed some of what he said. My controller above (routeController) is related to the view located at the /jcRealty path. If I put my ng-hides in my jcRealty view, they work properly (no refresh needed) using $scope. But since my ng-hide's are on index.html, outside of that controller's path, $rootScope was needed to not require a page reload.
Related
I am attempting to have the page go to a div section of the page based on what they click. I have the div for each section id'd with the proper tag. I have done a test where I can load the page and type url.com/services#insertidhere and it will go to the correct location. The issue is when I try to implement it in the state it won't go to the location. It just goes to the page normally even though the URL shown is correct.
HTML Index Snippet
<div ng-repeat="x in blue.services">
<div class="wrapIMG">
<img src="{{x.icon}}" />
<img class="clone" src="{{x.icon}}" />
</div>
<h4>{{x.title}}</h4>
<hr/>
<p>{{x.text}}</p>
<a ui-sref="services({id: x.title})" class="button2">About This</a>
</div>
myapp.js Snippet
app.config(function($stateProvider){
$stateProvider
.state('index', {
url:"/",
templateUrl: 'main.html',
data: {
cssId: 'home'
}
})
.state('services', {
url: "/services/#:id",
templateUrl: 'services.html',
data: {
cssId: 'services'
}
})
});
Services HTML Snippet
<section class="no-padding" style="" id="[id equal to x.title]"> ...</section>
<section class="no-padding" style="" id="[id equal to x.title]"> ...</section>
<section class="no-padding" style="" id="[id equal to x.title]"> ...</section>
I believe the issue has to be with .state URL but it shows correctly in the URL but it just isn't going to the location.
Angular uses the # in URLs for page routing (so do many other SPA frameworks).
To anchor the link to a specific id on a page, use the $anchorScroll service.
Example:
<div id="scrollArea" ng-controller="ScrollController">
<a ng-click="gotoBottom()">Go to bottom</a>
<a id="bottom"></a> You're at the bottom!
</div>
<script>
angular.module('anchorScrollExample', [])
.controller('ScrollController', ['$scope', '$location', '$anchorScroll',
function($scope, $location, $anchorScroll) {
$scope.gotoBottom = function() {
// set the location.hash to the id of
// the element you wish to scroll to.
$location.hash('bottom');
// call $anchorScroll()
$anchorScroll();
};
}]);
</script>
$scope.toPage = function(){$state.go('index');}
Did you try this?
I need some help to implement list and details page.
I have motorList.html page where i am listing all motors as hyperlink retrieved from server (database).
motorList.html
<div>
<ul class="phones">
<li ng-repeat="motor in motors" >
<a href="#/motors/{{motor.Id}}">{{motor.Name}}
</li>
</ul>
</div>
I want when user clicks on any motor link, system should navigate to motorDetails.html page and show the details for clicked/selected motor.
For this i defined my routes as following in app.js
app.js
app.config(['$routeProvider',
function ($routeProvider) {
$routeProvider.
when('/motors', {
templateUrl: 'View/motorlist.html',
controller: 'motorController'
}).
when('/motors/:motorId', {
templateUrl: 'View/motordetail.html',
controller: 'motorDetailsController'
}).
otherwise({
redirectTo: '/motors'
});
}]);
motorDetails.html
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<div>
<ul class="phones">
<li ng-repeat="motor in motors" class="thumbnail">
<p>{{motor.Name}} {{motor.Make}} {{motor.Model}} {{motor.Year}} {{motor.Kilometers}} {{motor.Price}} {{motor.Color}} {{motor.SellerType}}</p>
</li>
</ul>
</div>
</body>
</html>
motorDetailsController.js
var app = angular.module('myApp', ['ngSanitize', 'ui.select']);
app.controller('motorDetailsController', function ($scope, $routeParams, motorService) {
$scope.motors = null;
$scope.getMotorDetails = function (Id) {
motorService.getByMake(Id)
.success(function (motors) {
$scope.motors = motors;
})
.error(function (error) {
$scope.status = 'Unable to load motor data: ' + error.message;
});
}
});
Problem:
When i click on any motor hyperlink, it does not navigate to motorDetails.html page but url changes e.g. http://localhost:12270/View/motorList.html#/motors/161.
I am new to AngularJs routing and for sure i am missing something here but not sure what is wrong.
Could anyone guide me please.
Thanks
You should add ng-view directive on your page, which will show the template loaded from the $routeProvider by watching the URL. You need to add ng-view directive somewhere in your body.
Additionally you should incorporate the changes suggested by #Dvir.
Markup
<body>
<div>
<ul class="phones">
<li ng-repeat="motor in motors" class="thumbnail">
<p>{{motor.Name}} {{motor.Make}} {{motor.Model}} {{motor.Year}} {{motor.Kilometers}} {{motor.Price}} {{motor.Color}} {{motor.SellerType}}</p>
</li>
</ul>
</div>
<div ng-view></div>
</body>
Update
Ideally you should have ng-view directive there in motorList.html, which gets loaded(But I'm treating it as the index.html page where all the css & js references are there)
Also you don't need to include the html, head & body tag in partial as its going to treated as partial, So remove body,head & html tag and make it simple by placing required template only.
motorDetails.html
<div>
<ul class="phones">
<li ng-repeat="motor in motors" class="thumbnail">
<p>{{motor.Name}} {{motor.Make}} {{motor.Model}} {{motor.Year}} {{motor.Kilometers}} {{motor.Price}} {{motor.Color}} {{motor.SellerType}}</p>
</li>
</ul>
</div>
That's because href is a regular attribute and it's not evaluated by angularJs.
To make this expression to be your desired link you have to use ng-href so angularJs will evaulate the expression and assign it to an href html attirbute.
You have to change
href="#/motors/{{motor.Id}}"
to
ng-href="#/motors/{{motor.Id}}"
In addition to get its id. you have to use $routeParams in the controller.
For instance:
var id = $routeParams.motorId
UPDATE
I missed that but #Pankaj Parkar right. You have to use ng-view to make the routeProvider to assign the relevant view to the right placeholder.
How to use ng-view ?
You have to make an element where do you want to make the view appear.
It can be part of the page or all the page.
Put the element wherever you want and you'll understand.
For instance:
<body>
<div id="nav">
</div>
<ng-view>
<!-- this is the place your html template will apear -->
</ng-view>
</body>
I have a simple controller defined in my main app.js file, which controls opening/closing of my navbar and is visible on all other views of my app:
app.js:
.controller('mainController', ['$scope', function($scope){
$scope.menuActive = false;
$scope.toggleMenu = function(){
$scope.menuActive = !$scope.menuActive;
}
}]);
index.html:
<nav class="side-menu" ng-class="{ 'side-menu-open' : menuActive }">
<ul>
<li>LINK1</li>
<li>LINK2</li>
</ul>
</nav>
<!--Other views::.....-->
<div ui-view></div>
All my other views(which use controllerAs), have a button with an ng-click which I am using to access the above $scope.toggleMenu() function and ng-class, but this does not work, and I don't get any errors either:
view1.html :
<span class="btn btn-default"
ng-click="toggleMenu()">
MENU
</span>
View1.js:
angular
.module('myApp.view1', [])
.controller('View1Ctrl', [
function(){
................
}
]);
Also, the reason I have done it this way again is because my navbar is persistent throughout my app. Does this go against best practices by any chance?
If you are using the .. controller as .. syntax, make sure that you are using it for all controllers. Don't be selective about it.
Next, when using the syntax, you need not inject the $scope object. You need to instead use the this variable and attach any properties or functions that you would normally associate with the $scope object with the this object instead.
Thus,
$scope.toggleMenu = function(){
$scope.menuActive = !$scope.menuActive;
}
becomes
this.toggleMenu = function(){
this.menuActive = !this.menuActive;
}
Finally in your view, be sure to associate each expression with a controller.
<div ng-controller="mainController as main">
<nav class="side-menu" ng-class="{ 'side-menu-open' : main.menuActive }">
<ul>
<li>LINK1</li>
<li>LINK2</li>
</ul>
</nav>
<div ui-view>
<!-- Assuming that the following gets compiled to ui-view -->
<span class="btn btn-default" ng-click="main.toggleMenu()">
MENU
</span>
</div>
</div>
You can get some further hints on using the controller as syntax here
I am using angularJS with bootstrap to design a navigation on my application. I have defined a main controller and inside the main controller I call different page views using the ng-view attribute and then these individual views have their own controllers.
I am using the ng-class attribute to add the active class to my links, however, it is not working. The expression evaluates to true or false but the ng-class does not updates the class="active" on the elements.
On my home page I have the following code -
<section ng-controller="dashBoardCtrl" class="container">
<section class="row">
<h1>DME DashBoard | <small>WFM HeadCount</small> </h1>
</section>
<section class="row">
<ul class="nav nav-tabs">
<li role="presentation" ng-class="{active: {{path=='/'}}}"><a ng-href="#/">Home</a></li>
<li role="presentation" ng-class="{active: {{path=='/login'}}}"><a ng-href="#/login">Login</a></li>
</ul>
</section>
<section ng-view></section>
</section>
This is how the routes are configured on the app -
dmeDash.config(['$routeProvider', function ($routeProvider) {
$routeProvider
.when('/', {
templateUrl: '/views/home.html',
controller: 'homePageCtrl'
})
.when('/login', {
templateUrl: '/views/login.html',
controller: 'loginCtrl'
})
.otherwise({
redirectTo: '/'
});
}]);
The dashBoardCtrl have the following code -
dmeDashControllers.controller('dashBoardCtrl', ['$scope','$location', function($scope, $location) {
$scope.path = $location.$$path;
$scope.$watch('path',function(n,o) {
})
}]);
Home Page Controller has the following code -
dmeDashControllers.controller('homePageCtrl', ['$scope','$location', function($scope, $location) {
$scope.$parent.path = $location.$$path;
}]);
The log in page controller has the following code -
dmeDashControllers.controller('loginCtrl', ['$scope','$location', function($scope, $location) {
$scope.$parent.path = $location.$$path;
}]);
When I click from Home page to Login page the active class is not removed from home page link and not applied to the login page as well, however, when I view the code in firebug the expressions evaluates to true or false when the page changes.
When I refresh on individual pages the ng-class works correctly but not when using the hyperlinks, please suggest.
The syntax is wrong on the template. It should be:
<li role="presentation" ng-class="{'active': path==='/'}"><a ng-href="#/">Home</a></li>
And as style guide try using the === instead of the simple == because of type coercion. Or test agains truthy or falsy
Main.jsp
<html>
<body ng-app="myApp">
<div class="navbar">
View Orders
<a href="/logout" ng-show="$scope.isUserLoggedIn"> Logout </label>
<a href="/login" ng-show="!$scope.isUserLoggedIn"> Login </label>
</div>
<div ng-view></div>
</body>
</html>
Controllers
var myApp = angular.module('myApp', ['ngRoute']);
...
// route for the default home page
.when('/', {
templateUrl : function($node, tattrs) {
return "resources/html/home.html";
},
controller : 'mainController'
})
// route for the order page
.when('/order', {
templateUrl : function($node, tattrs) {
return "resources/html/order.html";
},
controller : 'orderController'
})
....
myApp.controller('mainController', function($scope, $http) {
....
$scope.isUserLoggedIn = true; //or false
.....
Question:
The $scope.isUserLoggedIn is having no effect on Login/Logout hrefs. The scope is probably not accessible on the main app page (i.e in the navbar in the ng-app page).
I want to show hide the Login/Logout button conditionally. Any ideas?
You are missing assigning controller to div
No need to use $scope there, just use
<div class="navbar" ng-controller="mainController">
View Orders
<a href="/logout" ng-show="isUserLoggedIn"> Logout </label>
<a href="/login" ng-show="!isUserLoggedIn"> Login </label>
</div>