Develop Reference

Angular load data from server and display information on separate page

I have a page where I display all usernames. Now I want to click on one of these usernames make a call to server to retrieve more information and display it on separate User page. (First name, last name, etc)
My problem is that when I click on username page opens but fields are not populated. Could you please review my code and suggest what I am doing wrong there?
app.config(function($routeProvider) {
$routeProvider
.when("/", {
templateUrl : "pages/login_page.html"
})
.when("/userpage", {
controller : 'UserController',
templateUrl : "pages/user_page.html"
})
.when("/allusers", {
controller : 'AllUserController',
templateUrl : "pages/all_users.html"
});
});
This is my login code. After user authenticated it can see all other users. So I am changing view to #allusers
app.directive("loginForm", function (AuthorizedHttp, ConfigurationRepository, UserObj) {
return {
restrict: 'E',
scope: {
},
templateUrl: 'templates/login-template.html',
replace: 'true',
controller: ['$scope', '$http', '$window',
function($scope, $location, $window) {
$scope.loginError = false;
$scope.login = function () {
$scope.loginError = false;
UserObj.setState(null, null, $scope.username, $scope.password, null);
AuthorizedHttp.get('http://{0}/account/user/login'.format(ConfigurationRepository.getBackendHostName()))
.success(function (response) {
UserObj.setState(response.first_name, response.last_name, response.email, $scope.password, response.role, response.timezones);
$window.location = "#allusers";
})
.error(function (err, status) {
$scope.username = '';
$scope.password = '';
$scope.loginError = true;
})
}
}
]
}
});
Code below responsible to make a call and retrieve all users. Works fine.
app.controller('AllUserController', function ($scope, AuthorizedHttp, ConfigurationRepository, UserObj, UserCurrent, TimezoneService) {
$scope.init = function () {
TimezoneService.getAllUsers()
.success(function (response) {
$scope.users_emails = response.map(function (item) {return item.email})
})
.error(function (err, status) {
alert('Error loading all users ')
});
};
});
HTML to display all usernames. Also set ng-click to pass a username as parameter to retrieve required user.
<div ng-controller="AllUserController" ng-init="init()">
<div ng-controller="UserController">
<div ng-repeat="email in users_emails" class="item-unchecked">
<a ng-click="getUser(email)">{{email}}</a>
</div>
</div>
</div>
User controller. Executed every time I click on username link.
app.controller('UserController', function ($scope, AuthorizedHttp, ConfigurationRepository, UserObj, UserCurrent, TimezoneService, $window) {
$scope.user_display_name = 'Now set yet';
$scope.getUser = function(username) {
TimezoneService.getUser(username)
.then(function (response) {
$scope.required_user = response.data;
$scope.user_display_name = '{0} ({1})'.format(response.data.first_name, response.data.email);
$scope.user_timezones = response.data.timezones.map(function (item) {
return item.timezone_name
});
$scope.user_role = response.data.role;
$window.location = '#userpage';
});
};
});
As a result user_page.html is loaded but all fields are not set. I don't understand why since I am setting a scope value before I change a $window.location.

Remove ng-controller="UserController" from your HTML
Create a function in your AllUserController like that
$scope.customNavigate = function(routeToNavigate, routeParameter){
$location.path("/" + routeToNavigate + "/" + routeParameter);
}
Change .when("/userpage", { to .when("/userpage/:email", {
Change ng-click="getUser(email)" to ng-click="customNavigate("userpage", email)"
Inject $routeParams to your UserController
Change $scope.getUser = function(username) { to function getUser (username) {
Call getUser($routeParams.email) in your UserController.

angular get and set atributes via service

i can't find a solution to this, basicly everytime i do a login, i want to store the user that i get from the node end point in the service, after that in my main Controller i should get the name of the user, but that never happen, dunno why
here is the code:
app.controller('MainCtrl', function ($scope, $state,$location,$http,user) {
$scope.user = {
nome: user.getProperty()
};
$scope.showRegister = function () {
$state.go('register');
}
$scope.showLogin = function () {
$state.go('login');
}
});
app.controller('loginController', function ($scope, $http, $state,user) {
$scope.login = function () {
var data = {};
data.password = $scope.loja.password;
data.email = $scope.loja.email;
$http.post('http://localhost:8080/login/',data)
.success(function (data) {
console.log(data);
user.setProperty(data.nome);
$state.go('home');
})
.error(function (statusText) {
console.log("failed");
});
}
});
user service
app.service('user', function () {
var property = {};
return {
getProperty: function () {
return property.nome;
},
setProperty: function (value) {
property.nome = value;
}
};
});

You could just watch your service for changes by adding this code to your MainCtrl:
$scope.$watch(function () { return user.getProperty();}, updateProp, true);
function updateProp(newValue, oldValue) {
$scope.user = {
nome: newValue
};
}
updateProp gets executed everytime the value of user.getProperty() changes.

Your main issue is with your MainCtrl . In the initial execution of MainCtrl there is no value set into your service so its get blank. MainCtrl executes before setting the value in the service.
$scope.user = {
nome: user.getProperty()
};
this code should be executed after setting the value in the service but it executes in the initialization of controller.
You can get the reference from the fiddle below.
http://jsfiddle.net/ADukg/9799/

Use local storage to store AngularJS data

I am currently using $rootScope to store user information and whether or not the user is logged in. I have tried using $window.localStorage, but with no success. My goal is to have items in my navbar appear through an ng-show once a user is logged on, have their username appear in the navbar, individual user profile view, all users view, etc. I need a persistent login. I have the navbar working with $rootscope, but whenever I try and transition over to $window.localStorage, it fails. Here is the code using $rootScope:
mainModule
angular.module('mainModule', [
'ui.router',
...
])
.config(configFunction)
.run(['$rootScope', '$state', 'Auth', function($rootScope, $state, Auth) {
$rootScope.$on('$stateChangeStart', function(event, next) {
if (next.requireAuth && !Auth.getAuthStatus()) {
console.log('DENY');
event.preventDefault();
$state.go('login');
} else if (Auth.getAuthStatus() || !Auth.getAuthStatus()) {
console.log('ALLOW');
}
});
}]);
Auth Factory
angular.module('authModule').factory('Auth', ['$http', '$state', function authFactory($http, $state) {
var factory = {};
var loggedIn = false;
var userData = {};
factory.getAuthStatus = function() {
$http.get('/api/v1/auth')
.success(function(data) {
if (data.status == true) {
loggedIn = true;
} else {
loggedIn = false;
}
})
.error(function(error) {
console.log(error);
loggedIn = false;
});
return loggedIn;
}
return factory;
}]);
Login Controller
function SigninController($scope, $rootScope, $http, $state) {
$scope.userData = {};
$scope.loginUser = function() {
$http.post('api/v1/login', $scope.userData)
.success((data) => {
$scope.userData = data.data;
$rootScope.loggedIn = true;
$rootScope.userData = data;
$state.go('home');
})
.error((error) => {
console.log('Error: ' + error);
});
};
}
Nav Controller
function NavbarController($scope, Auth) {
$scope.loggedIn = Auth.getAuthStatus();
}
EDIT EDIT EDIT
Here is how I am using local storage. These are the only things that changed.
Login Controller
function SigninController($scope, $window, $http, $state) {
$scope.userData = {};
$scope.loginUser = function() {
$http.post('api/v1/login', $scope.userData)
.success((data) => {
$scope.userData = data.data;
$window.localStorage.setItem('userData', angular.toJson(data));
$window.localStorage.setItem('loggedIn', true);
$state.go('home');
})
.error((error) => {
console.log('Error: ' + error);
});
};
}
Auth Factory
angular
.module('authModule')
.factory('Auth', ['$http', '$window', '$state', function authFactory($http, $window, $state) {
var factory = {};
factory.getAuthStatus = function() {
$http.get('/api/v1/auth')
.success(function(data) {
if (data.status == true) {
$window.localStorage.setItem('loggedIn', true);
} else {
$window.localStorage.setItem('loggedIn', false);
}
})
.error(function(error) {
console.log(error);
$window.localStorage.setItem('loggedIn', false);
});
return $window.localStorage.getItem('loggedIn');
}
return factory;
}]);

I see a potential problem with your use of localStorage.getItem('loggedIn').
Because localStorage only stores strings, what you get back is actually a stringified version of the boolean that you put in. If the string 'false' gets returned, your check of !Auth.getAuthStatus() in main module for example will always evaluate to boolean false because any non-empty string in JavaScript is "truthy".
i.e. !'false' === false (the same as !true === false)
You can get over this by using JSON.parse on the value in localStorage. e.g. JSON.parse(localStorage.getItem('loggedIn')) would parse the string 'false' to the Boolean false.

Simply replace $window.localStorage with window.localStorage and you should be fine.
For example:
function SigninController($scope, $window, $http, $state) {
$scope.userData = {};
$scope.loginUser = function() {
$http.post('api/v1/login', $scope.userData)
.success((data) => {
$scope.userData = data.data;
window.localStorage.setItem('userData', angular.toJson(data));
window.localStorage.setItem('loggedIn', true);
$state.go('home');
})
.error((error) => {
console.log('Error: ' + error);
});
};
}
This being said, storing authenticated status in localStorage (or sessionStorage) is not a good path to go down. Both key/value pairs can be read in the developer pane and then altered (aka spoofed) via the console. A better solution is to return a unique value (GUID) after a successful login and store it in a cookie (set to expire in a short amount of time, like 20 minutes) that can be read on the server and verified there. You can and should use $cookie for this. Your user login state should be controlled server-side, never client-side. The client should always have to prove that it is authenticated.
To persist login, create a service that handles your visitor and let that service handle the login/logout and provide the proof of being logged in. That proof of being logged in should always be a private value that is held internally by the service and not accessible outside of it.
(function () {
'use strict';
var visitorModelService = ['$http', function ($http) {
var loggedIn = false,
visitorModel = {
login:function(){
//do login stuff with $http here
//set loggedIn to true upon success
},
loggedIn:function(){
return loggedIn;
},
logout:function(){
//do logout stuff with $http here
//no matter what, set loggedIn to false
}
};
return visitorModel;
}];
var module = angular.module('models.VisitorModel', []);
module.factory('VisitorModel', visitorModelService);
}());
Doing this, you can simply check for visitor.loggedIn in your ng-show and have everything centralized. Such as:
<a ng-click='visitor.logout' ng-show='visitor.loggedIn'>Log Out</a>
Better yet, put the elements that are only visible to authenticated users in a div tag and hide/show them en-mass.

How to pass form data to another page?

im using angularJS v 1.5.6 and want to know how to pass my form data correctly with $location.path.
Here is my code Page A:
<form>
...
<button type="submit" ng-click="submit(formData)">submit</button>
</form>
JS:
app.config(['$routeProvider', function ($routeProvider) {$routeProvider
// Home
.when("/", {
templateUrl: "A.html",
controller: "ACtrl"
})
.when("/B/", {
templateUrl: "B.html",
controller: "BCtrl"
})
//fallback url if nothing matches
.otherwise({
redirectTo: '/'
});
}]);
app.controller('ACtrl', function ( $scope, $location, $http) {
$scope.formData = {};
$scope.submit = function() {
$location.path("/B/" + $scope.formData );
};
});
//controller for B page
app.controller('BCtrl', ['$scope', '$routeParams',
function($scope,$routeParams) {
$scope.formData = $routeParams.formData;
}]);
it is a pretty simple example, but i cant figure out how to solve it :(
By clicking the submit nothing happens. If i remove the $scope from $scope.formData i get a error like: Error: formData is not defined.
The terms in formdata are available, i tested it with console.log($scope.formData) and everything is ok.
here is the link plunker: https://plnkr.co/edit/K5zwcmRRyom5HR4a5Q9o
EDIT
the only issue is now, how to handle the select object correctly in the foreach loop. Need help please

You can do it by creating a service and using setter/getter in order to transfer a variable.
For example like this: https://plnkr.co/edit/IuTXsVLU7dq3TylfnSYP?p=preview
app.service('TransferService', [function(){
var savedData,
service = {
getData: getData,
setData: setData
}
function getData(){
return savedData
}
function setData(data){
savedData = data
}
return service
}])

Don't use location.path...
You could either use a service or use localstorage (or some other browser storage mechanism [sessionStorage, indexdb].
Service Method Below
app.service("SomeService", function () {
var value = null;
this.set = function (val) {
value = val;
return this;
}
this.get = function () {
return value;
}
})
app.controller("ACtrl", function ($scope, SomeService) {
$scope.formData = {};
$scope.submit = function() {
//Assuming you've populated it with some data...
SomeService.set($scope.formData);
$location.path("/B/");
};
})
app.controller("BCtrl", function ($scope, SomeService) {
$scope.formData;
(function () {
//Check that the data is present in the SomeService service.
var dataFromACtrl = SomeService.get();
if (dataFromACtrl) {
$scope.formData = dataFromACtrl;
}
})();
})
Using localStrorage below, could be sessionStorage.
app.controller("ACtrl", function ($scope, SomeService) {
$scope.formData = {};
$scope.submit = function() {
//Assuming you've populated it with some data...
window.localStorage.setItem("form_data", JSON.stringify($scope.form_data));
$location.path("/B/");
};
})
app.controller("BCtrl", function ($scope, SomeService) {
$scope.formData;
(function () {
var dataFromACtrl = window.localStorage.getItem("form_data");
if (dataFromACtrl) {
$scope.formData = JSON.parse(dataFromACtrl);
}
})();
})
Note
Using the localStorage example you would need to do some clean-up, after doing whatever you want to do with that data in Bctrl you'd want to clear the entry in localstorage using either of the below lines of code:
window.localStorage.removeItem("form_data");
delete window.localStorage["form_data"];

AngularJS Refresh Select Tag with dynamic content at runtime

EDIT - lots of changes
After my page loads, I have some javascript function calls that return data which will be used in my markup to populate tag options.
Currently the issue is this: When the values are changed by the javascript outside ( and even inside the AngularJS controller). The view is not being updated. I have tried wrapping scope assignments in $scope.$apply(...) however this just results in a $digest() already in progress error.
AngularJS Code:
app.service('userService', ['$http', function($http) {
var userModel = {
qGroupZero: '',
qGroupOne: '',
qGroupTwo: ''
};
var states = '';
return{
getUserModel: function() {
return userModel;
},
getStates: function() {
return states;
},
loadChallengeQuestions: function() {
var userEnrollmentChallenge = getChallengeQuestions();
console.log('loadChallengeQuestions()');
userModel.qGroupZero = userEnrollmentChallenge.challengeQuestions.questionGroup[0];
userModel.qGroupOne = userEnrollmentChallenge.challengeQuestions.questionGroup[1];
userModel.qGroupTwo = userEnrollmentChallenge.challengeQuestions.questionGroup[2];
},
loadStates: function(callback) {
console.log('loadStates()');
return $http.get('content/states.json').then(function(result) {
states = result.data;
});
}
};
}]);
app.controller('EnrollmentController', ['$scope', 'userService', '$http', function($scope, userService, $http) { //Dependencies and Constructor function.
$scope.userService = userService;
$scope.states = [];
userService.loadChallengeQuestions();
var userModel = userService.getUserModel();
$scope.qGroupZero = userModel.qGroupZero.challengeQuestion; //<-- This assignment is not updated in the view.
userService.loadStates().then(function(result) {
$scope.states = userService.getStates(); //<-- This assignment is not updated in the view.
});
}]);
The content of challengeQuestion is a JSON array of 7 items.
The Markup:
<select ng-model="selectionOne"
name="question1"
ng-options="opt as opt.questionText for opt in qGroupZero">
</select>
<select ng-model="state"
name="state"
ng-options="opt as opt.abbreviation for opt in states"
class="required">
</select>
So at this point. I have all my resources. And I just need to find a way to get AngularJS to re-evaluate the ng-options value (a $scope.value) and redraw the content? I think I'm saying that right...
Why do I feel that this should be easy? And yet three days later here I am :D
Thanks for reading and helping!!!

What if you use the angular $http service and promise objects instead?
app.service('userService', ['$http', function($http) {
var userModel: {
qGroupZero: '',
qGroupOne: '',
qGroupTwo: ''
};
var states = '';
return{
getUserModel: function(){
return userModel;
},
getStates: function(){
return states;
},
loadChallengeQuestions: function(userEnrollmentChallenge) {
console.log('loadChallengeQuestions()');
userModel.qGroupZero = userEnrollmentChallenge.challengeQuestions.questionGroup[0];
userModel.qGroupOne = userEnrollmentChallenge.challengeQuestions.questionGroup[1];
userModel.qGroupTwo = userEnrollmentChallenge.challengeQuestions.questionGroup[2];
},
loadStates: function(){
return $http.get('content/states.json').then(function(result){
states = result.data;
});
}
}
});
app.controller('EnrollmentController', ['$scope', 'userService', function($scope, userService) { //Dependencies and Constructor function.
$scope.states = [];
userService.loadStates().then(function(result){
var userModel = userService.getUserModel();
$scope.states = userService.getStates();
$scope.qGroupZero = userModel.qGroupZero.challengeQuestion;
});
}]);