Hie , I am using angularjs for building an end to end application.My functionality are following :
Default page is Login
After login get successful user is redirected to home page where he can search filter and can save his search.
I m facing problem with following use case: When user search some result and after that if he save some search history.If he press the browser back button the page must be redirect to again search result but page is redirected to login page always.
I want whenever user press back button of browser the page should be redirected to previous page not to login.
The complete home page is single page html and the functionality are managed by ng-if.
You have to use guards in application check weather user is logged in or not.
#Injectable()
export class AuthGuard implements CanActivate {
auth: any = {};
constructor(private authService: AuthService, private router: Router) {
}
canActivate() {
if (/*user is logged in*/) {
this.router.navigate(['/dashboard']);
return true;
}
else {
this.router.navigate(['/Login']);
}
return false;
}
}
Related
I am creating a react/Gatsby website and am trying to get the navigation working an need some guidance
So basically I have a site on a domain like: https//mysite.com
When navigating in the site my route gets added to the domain, like so: https//mysite.com/page1,
https//mysite.com/page2 etc.
When I refresh the browser I want the site to reload the website to its origional state, ie, https//mysite.com.
When I do reload from /page2, for example, the site seems to remember the last position. So on a reload I still have https//mysite.com/page2 in the address bar, whereas I want the site to go to the home page.
Is this possible?
Thanks
See this question for how to detect a page reload (such as pressing F5). The second most upvoted answer recommends this code for detecting the refresh and triggering another function:
componentDidMount() {
window.onbeforeunload = function() {
this.onUnload();
return "";
}.bind(this);
}
Gatsby uses #reach/router under the hood. So use Gatsby Link to redirect to your root page:
import { navigate } from "gatsby"
componentDidMount() {
window.onbeforeunload = function() {
this.onUnload();
return "";
}.bind(this);
navigate("/"); // redirect to your root page here
}
The user will be able to go back to the previous page. If you don't want this you replace the history like this:
navigate("/", { replace: true });
I'm using react-router-dom for routing in my reactjs app. And i want to prevent user from going back after login i.e i don't want to user go back again on login screen when he hit back button on browser after login.
Using componentDidUpdate method of React page lifecycle, you can handled or disabled go back functionality in browser. basically componentDidUpdate method will call automatocally when component got updated. so once your component is updated you can prevent to go back as below.
componentDidUpdate() {
window.history.pushState(null, document.title, window.location.href);
window.addEventListener('popstate', function(event) {
window.history.pushState(null, document.title, window.location.href);
});
}
This will prevent to user go back and uses the current page as a refernce for history object . so incase of user even click on back button of browser, they can not go backword in the last page.
You can checkout this codesandbox example may be that will help you or someone who is looking for the same.In this we can prevent the user to go back to previous page,For more detail checkout this medium article. here is small part of the code
componentDidMount() {
const { history } = this.props;
window.addEventListener("popstate", () => {
history.go(1);
});
}
for full working example click on this link.
Are you using redux? other wise you can add something on your render that checks if the user is already logged in it redirects him back to the page he was like:
import { Redirect } from 'react-router'
render(){
//I store my user JWT on this.props.currentUser redux state
this.props.currentUser && <Redirect to={'whatever page you want'} />
//OR you can also, if you have history, history.goBack()
So instead of forbidding going back, you forbid the user to ever going to the login page while logged in, it redirects him somewhere or back to where he was
window.addEventListener('popstate', function(event) {
});
use this function this will read your browser back button click event and after that whatever condition you want you can apply
I have logout button in my angularjs(1.5) application. On click of it calling the login page url.After logout, when i click the browser back button again it is going to my application page instead of login page.
$scope.logOutUser = function () {
$window.location.href = "logoutURL";
}
Can anyone suggest how to implement this in angularjs?
Use $location service's .replace() method
$scope.logOutUser = function () {
$window.location.href = "logoutURL";
$location.replace()
}
Please take this my old post abut the back button issue : How to detect if a user clicks browser back button in Angularjs
You may may need that logic like
$scope.$on('$routeChangeStart', function (scope, next, current) {
if (next.$$route.controller != "Your dashboard Controller Name") {// please be mine dash board controller is your home page after login
// Show here for your model, and do what you need**
$window.location.href = "logoutURL";
}
});
But if you did logout in dashboard page then it would be an issue. At this time you need to maintain a flag with ng-Storage for the user is currently authenticate or not.
:)
I'm trying to reload browser (with location.reload();) if user click in <Link> for the the same path, where it already.
Example:
I have a menu:
- Home
- Contact
- About
When user click in 'Contact', he go to '/contact'. But I he already in '/contact' and click in 'Contact' in menu, the page reload.
It's possible to do this?
What I'm trying:
<Link onClick={this.handleClick} to="contact">Contact</link>
handleClick(){
var currentRoute = 'React-Route path';
var linkRoute = 'link path';
if (currentRoute === linkRoute)
location.reload();
} else {
//do default transition
}
}
But I don't figure what I need to declare in 'currentRoute' and 'linkRoute'. :(
You shouldn't reload the page. Thats a really bad idea. Instead disable the link like this:
if you are on the home page your links would look like this
home
contact
about
Then in your handleClick() function you can just do this.
handleClick(e){
e.preventDefault();
var disabled = $(e.currentTarget).data('disabled');
if (!disabled){
//do redirect
}
}
Basically have a data attribute on the link that specifies if it is disabled or not (only disabled if its on the current page) and then only redirect if its on a different page
Reloading the page on the exact same page will cause you to lose all state and process that the user has done, which doesn't need to happen. It also reduces traffic on your server for a new page load (aka any data you need to load on the page load you don't have to do again).
You can use window.location.href to get the current URL. Then you can do your comparison.
I have my app that you need to login to get in to the other pages.
so the first page is "login" and it checks if you are already logged, if so you will be redirected to the main page app, if not it will show you the login page.
now the problem is when the user is inside the logged page area, and he clicks back he will get to the "login" page and than redirected back to the main page, as he is logged in already.
So he is stuck in an infinite loop.
how can I remove the login page from the history.
just like in android "android remove activity from history stack"
here is the solution!
simply use:
$ionicHistory.nextViewOptions({
disableBack: true
});
example for login function:
$scope.login = function () {
Security.login($scope.cred.email, $scope.cred.password)
.success(function(data) {
Security.setUser(data.data[0]);
$ionicHistory.nextViewOptions({
disableBack: true
});
$state.go('posts', {}, {location: "replace", reload: true});
}).error(function(data) {
$scope.showAlert();
});
};
For a pure AngularJS way to accomplish this (rather than ionic or javascript in the other answers), use the $location service's replace() method (documentation) :
Use $location.url('/newpath'); or $location.path('/newpath'); as you normally would to do the redirection in angular. And then just add $location.replace(); right after it. Or you can chain the commands like this:
$location.url('/newpath').replace();
Quick search: https://stackoverflow.com/a/8969975/185672
Top answer:
Instead of using window.location = url; to redirect,
try window.location.replace(url);.
after using replace() the current page will not be saved in session
history, meaning the user won't be able to use the Back button to
navigate to it.