Page goes blank after loading URL with $routeProvider in AngularJS

Issue

I’m having trouble from keeping one of my pages from going blank after refreshing my browser.

When a user visits /user/:username, profile.html loads. It works as intended on the first load, but if I refresh the page, I’m left with a raw JSON output on the screen (previously, it would just say “null“).

For further context, I have an ng-href in my home.html file:

<h3>View your profile page <a ng-href="/user/{{user.username}}">here</a>.</h3>

The corresponding Angular file:

var app = angular.module('social', ['ngRoute', 'ngCookies'])

app.config(function($routeProvider, $locationProvider) {
$routeProvider
.when('/', {
 templateUrl: 'home.html',
 controller: 'HomeController'
})
.when('/login', {
 templateUrl: 'login.html',
 controller: 'LoginController'
})
.when('/signup', {
 templateUrl: 'signup.html',
 controller: 'SignupController'
})
.when('/user/:username', {
    templateUrl: 'profile.html',
    controller: 'UserProfileController'
})
$locationProvider.html5Mode(true)

})

My controller:

app.controller('UserProfileController', function($http, $scope, $cookies, $rootScope, $routeParams) {
console.log("$cookies.get('currentUser')")
console.log($cookies.get('currentUser'))
function getCurrentUser() {
    $http.get('/user/' + $routeParams.username).then(function(res) {
        console.log('res.data in the user profile controller')
        console.log(res.data)
        $scope.user = res.data
    })
}

if ($cookies.get('currentUser') != undefined) {
    getCurrentUser()
} else {
    console.log("No one is here.")
}

})

I got this to work by removing $locationProvider.html5Mode(true), and using ng-href="#/user/{{user.username}}", meaning that no data is lost upon page refresh, and I don’t get a blank screen. But, the problem is that the # shows up in the URL, which I eventually won’t want. Obviously, if I push an app like this to production, I don’t want the # appearing in the URL. If it needs to be their during development, I can live with that.

I should also note that I only have this problem with /user/:username. All of my other routes (/, /login, and /signup) work as expected, meaning the pages don’t go blank after a refresh, and all the data persists due to the use of cookies.

Solution

AngularJS stores your data in memory so when you refresh the page you will lose the data that is why your page left with raw expressions because angualr lost the data that is required for bindings.

You could use route resolves to get the data that is required for each route so that when you refresh the page angular will call the resolve function for that route which will return the data to controller.

Route resolves in Angular

Answered By – Buddybear

Answer Checked By – Marilyn (AngularFixing Volunteer)

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