Working with angularJS I am trying to figure out a way to bind the value of a select element under the scope of controller A to use it as an argument for an ng-click call [getQuizByCampID() Function] under the scope of controller B.
My first idea was to use jquery, but I have read in the link below that using jquery is not recommended when starting with angularJS.
"Thinking in AngularJS" if I have a jQuery background?
I also read in the link below that this is performed using ng-model, the only problem is that that the example provided is all under the same controller.
and Binding value to input in Angular JS
What is the angularJS way to get the value of the select element under controller A into the function call in the select under controller B?
Price.html view
<div class="col-sm-3" ng-controller="campCtrl"> **Controller A**
<select id="selCampID" class="form-control" ng-model="campInput" >
<option ng-repeat="camp in campaigns" value="{{camp.camp_id}}">{{camp.camp_name}}</option>
</select>
</div>
<div class="col-sm-3" ng-controller="quizCtrl"> **Controller B**
<select ng-click="getQuizByCampID($('#selCampID').val())" class="form-control" ng-model="quizInput">
<option ng-controller="quizCtrl" ng-repeat="quiz in quizzesById" value="{{quiz.quiz_id}}">{{quiz.quiz_name}}</option>
</select>
</div>
App.js
var app= angular.module('myApp', ['ngRoute']);
app.config(['$routeProvider', function($routeProvider) {
$routeProvider.when('/price', {templateUrl: 'partials/price.html', controller: 'priceCtrl'});
}]);
$routeProvider.when('/price', {templateUrl: 'partials/price.html', controller: 'priceCtrl'});
Quiz Controller
'use strict';
app.controller('quizCtrl', ['$scope','$http','loginService', function($scope,$http,loginService){
$scope.txt='Quiz';
$scope.logout=function(){
loginService.logout();
}
getQuiz(); // Load all available campaigns
function getQuiz(campID){
$http.post("js/ajax/getQuiz.php").success(function(data){
$scope.quizzes = data;
//console.log(data);
});
};
$scope.getQuizByCampID = function (campid) {
alert(campid);
$http.post("js/ajax/getQuiz.php?campid="+campid).success(function(data){
$scope.quizzesById = data;
$scope.QuizInput = "";
});
};
$scope.addQuiz = function (quizid, quizname, campid) {
console.log(quizid + quizname + campid);
$http.post("js/ajax/addQuiz.php?quizid="+quizid+"&quizname="+quizname+"&campid="+campid).success(function(data){
getQuiz();
$scope.QuizInput = "";
});
};
}])
You should store the value in a service.
example:
app.factory('SharedService', function() {
this.inputValue = null;
this.setInputValue = function(value) {
this.inputValue = value;
}
this.getInputValue = function() {
return this.inputValue;
}
return this;
});
Example on Plunkr
Read: AngularJS Docs on services
or check this Egghead.io video
You should use service to store the value.
This is how to do that:
Share data between AngularJS controllers
Related
Here is the plunkr i have created.
Basically i am facing 2 issues with this piece of code -
I need help loading months in the drop down and
When month is changed in the dropdown from headerController, the sales for that month is displayed in detailController. I am trying to create a dependency between multiple controllers using a service.
I will appreciate any help fixing these 2 issues.
You can use $broadcast service for event purposes. Following is the link which explains the use of $broadcast and communicating between two controllers.
enter code herehttp://plnkr.co/edit/d98mOuVvFMr1YtgRr9hq?p=preview
You could simply achieve this by using $broadcast from one controller in $rootScope and listen that event in $scope using $on. Though I would suggest you to use service that will share data among to controller. Using dot rule will reduce your code. Take a look at below optimized code. Also you could replace your select with ng-repeat with ng-option to save object on select.
Markup
<div data-ng-controller="headerController">
<h3>Select Month</h3>
<select id="month" ng-model="sales.selectedMonth"
ng-options="month.monthId for month in sales.monthlySales">
</select>
</div>
<div data-ng-controller="detailsController">
<h3>Sales for Month</h3>
<div ng-bind="sales.selectedMonth"></div>
</div>
Code
app.service('valuesService', [function() {
var factory = {};
factory.sales = {}
factory.sales.salesForMonthId = 10;
factory.sales.months = [1, 2];
factory.sales.monthlySales = [{monthId: 1,sales: 10}, {monthId: 2,sales: 20}];
factory.sales.selectedMonth = factory.sales.monthlySales[0];
return factory;
}]);
app.controller('headerController', ['$scope', 'valuesService',
function($scope, valuesService) {
$scope.sales = {};
getData();
function getData() {
$scope.sales = valuesService.sales;
}
}
]);
app.controller('detailsController', ['$scope', 'valuesService',
function($scope, valuesService) {
$scope.sales = {};
getData();
function getData() {
$scope.sales = valuesService.sales;
}
}
]);
Demo Plunkr
I can see the months are already loading fine.
For proper data binding to work across service and controller, you would need to bind one level above the actual data, resulting a dot in your expression. This is because javascript doesn't pass by reference for primitive type.
In service:
factory.data = {
salesForMonthId: 0
}
In controller:
app.controller('detailsController', ['$scope', 'valuesService',
function ($scope, valuesService) {
$scope.values = valuesService.data;
}
]);
In template:
<div>{{values.salesForMonthId}}</div>
Plunker
I'm trying to take the first example from the angular.js homepage and adding in cookie support.
This is what I have so far: https://jsfiddle.net/y7dxa6n8/8/
It is:
<div ng-app="myApp">
<div ng-controller="MyController as mc">
<label>Name:</label>
<input type="text" ng-model="mc.user" placeholder="Enter a name here">
<hr>
<h1>Hello {{mc.user}}!</h1>
</div>
</div>
var myApp = angular.module('myApp', ['ngCookies']);
myApp.controller('MyController', [function($cookies) {
this.getCookieValue = function () {
$cookies.put('user', this.user);
return $cookies.get('user');
}
this.user = this.getCookieValue();
}]);
But it's not working, ive been trying to learn angular.
Thanks
I'd suggest you create a service as such in the app module:
app.service('shareDataService', ['$cookieStore', function ($cookieStore) {
var _setAppData = function (key, data) { //userId, userName) {
$cookieStore.put(key, data);
};
var _getAppData = function (key) {
var appData = $cookieStore.get(key);
return appData;
};
return {
setAppData: _setAppData,
getAppData: _getAppData
};
}]);
Inject the shareDataService in the controller to set and get cookie value
as:
//set
var userData = { 'userId': $scope.userId, 'userName': $scope.userName };
shareDataService.setAppData('userData', userData);
//get
var sharedUserData = shareDataService.getAppData('userData');
$scope.userId = sharedUserData.userId;
$scope.userName = sharedUserData.userName;
Working Fiddle: https://jsfiddle.net/y7dxa6n8/10/
I have used the cookie service between two controllers. Fill out the text box to see how it gets utilized.
ok, examined your code once again, and here is your answer
https://jsfiddle.net/wz3kgak3/
problem - wrong syntax: notice definition of controller, not using [] as second parameter
If you are using [] in controller, you must use it this way:
myApp.controller('MyController', ['$cookies', function($cookies) {
....
}]);
this "long" format is javascript uglyfier safe, when param $cookies will become a or b or so, and will be inaccessible as $cookies, so you are telling that controller: "first parameter in my function is cookies
problem: you are using angular 1.3.x, there is no method PUT or GET in $cookies, that methods are avalaible only in angular 1.4+, so you need to use it old way: $cookies.user = 'something'; and getter: var something = $cookies.user;
problem - you are not storing that cookie value, model is updated, but cookie is not automatically binded, so use $watch for watching changes in user and store it:
$watch('user', function(newValue) {
$cookies.user = newValues;
});
or do it via some event (click, submit or i dont know where)
EDIT: full working example with $scope
https://jsfiddle.net/mwcxv820/
I have angular working in one of my ASP.NET MVC applications. I am using two html templates with Angular Routing. One is a list of current Favorites that comes from the database and is serialized into json from my Web API and used by angular to list those items from the database.
The second html template is a form that will be used to add new favorites. When the overall page that includes my angular code loads, it has a cookie named currentSearch which is holding the value of whatever the last search parameters executed by the user.
I would like to inject this value into my angular html template (newFavoriteView.html) for the value of a hidden input named and id'd searchString.
I have tried using jQuery, but had problems, plus I would much rather do this inside of angular and somehow pass the value along to my template or do the work inside the view(template). However, I know the latter would be bad form. Below is the code I think is important for one to see in order to understand what I am doing.
Index.cshtml (My ASP.NET VIEW)
#{
ViewBag.Title = "Render Search";
ViewBag.InitModule = "renderIndex";
}
<div class="medium-12 column">
<div data-ng-view=""></div>
</div>
#section ngScripts {
<script src="~/ng-modules/render-index.js"></script>
}
Setting the cookie in the MVC Controller
private void LastSearch()
{
string lastSearch = null;
if (Request.Url != null)
{
var currentSearch = Request.Url.LocalPath + "?" +
Request.QueryString;
if (Request.Cookies["currentSearch"] != null)
{
lastSearch = Request.Cookies["currentSearch"].Value;
ViewBag.LastSearch = lastSearch;
}
if (lastSearch != currentSearch)
{
var current = new HttpCookie("currentSearch", currentSearch){
Expires = DateTime.Now.AddDays(1) };
Response.Cookies.Set(current);
var previous = new HttpCookie("lastSearch", lastSearch) {
Expires = DateTime.Now.AddDays(1) };
Response.Cookies.Set(previous);
}
}
}
render-index.js
angular
.module("renderIndex", ["ngRoute"])
.config(config)
.controller("favoritesController", favoritesController)
.controller("newFavoriteController", newFavoriteController);
function config($routeProvider) {
$routeProvider
.when("/", {
templateUrl: "/ng-templates/favoritesView.html",
controller: "favoritesController",
controllerAs: "vm"
})
.when("/newsearch", {
templateUrl: "/ng-templates/newFavoriteView.html",
controller: "newFavoriteController",
controllerAs: "vm"
})
.otherwise({ redirectTo: "/" });
};
function favoritesController($http) {
var vm = this;
vm.searches = [];
vm.isBusy = true;
$http.get("/api/favorites")
.success(function (result) {
vm.searches = result;
})
.error(function () {
alert('error/failed');
})
.then(function () {
vm.isBusy = false;
});
};
function newFavoriteController($http, $window) {
var vm = this;
vm.newFavorite = {};
vm.save = function () {
$http.post("/api/favorites", vm.newFavorite)
.success(function (result) {
var newFavorite = result.data;
//TODO: merge with existing topics
alert("Thanks for your post");
})
.error(function () {
alert("Your broken, go fix yourself!");
})
.then(function () {
$window.location = "#/";
});
};
};
favoritesView.html
<div class="container">
<h3>New Favorite</h3>
<form name="newFavoriteForm" ng-submit="vm.save()">
<fieldset>
<div class="row">
<div class="medium-12 column">
<input name="searchString" id="searchString" type="hidden"
ng-model="vm.newFavorite.searchString"/>
<label for="title">Name</label><br />
<input name="title" type="text"
ng-model="vm.newFavorite.name"/>
<label for="title">Description</label><br />
<textarea name="body" rows="5" cols="30"
ng-model="vm.newTopic.description"></textarea>
</div>
<div class="medium-12 column">
<input type="submit" class="tiny button radius" value="Save"/> |
Cancel
</div>
</div>
</fieldset>
</form>
</div>
My current attepts have been using jQuery at the end of the page after Angular has loaded and grab the cookie and stuff it in the hidden value. But I was not able to get that to work. I also thought about setting the value as a javascript variable (in my c# page) and then using that variable in angular some how. AM I going about this the right way?
Or should it be handled in the angular controller?...
I'm new to angular and the Angular Scope and a bit of ignorance are getting in the way. If any other info is needed I can make it available, thanks if you can help or guide me in the right direction.
You can do it by reading the cookie value using JavaScript, set it as a property of the $scope object and access it on the template.
//Inside your controllers
function favoritesController($http, $scope) {
//Get the cookie value using Js
var cookie = document.cookie; //the value is returned as a semi-colon separated key-value string, so split the string and get the important value
//Say the cookie string returned is 'currentSearch=AngularJS'
//Split the string and extract the cookie value
cookie = cookie.split("="); //I am assuming there's only one cookie set
//make the cookie available on $scope, can be accessed in templates now
$scope.searchString = cookie[1];
}
EXTRA NOTE
In AngularJS, the scope is the glue between your application's controllers and your view. The controller and the view share this scope object. The scope is like the model of your application. Since both the controller and the view share the same scope object, it can be used to communicate between the two. The scope can contain the data and the functions that will run in the view. Take note that every controller has its own scope. The $scope object must be injected into the controller if you want to access it.
For example:
//inject $http and $scope so you can use them in the controller
function favoritesController($http, $scope) {
Whatever is stored on the scope can be accessed on the view and the value of a scope property can also be set from the view. The scope object is important for Angular's two-way data binding.
Sorry if I'm misunderstanding or over-simplifying, but...assuming JavaScript can read this cookie-value, you could just have your controller read it and assign it to a $scope variable?
If JavaScript can't read the value, then you could have your ASP write the value to a JavaScript inline script tag. This feels yuckier though.
Update to show controller-as example.
Assuming your HTML looked something vaguely like this:
<div ng-controller="MyController as controller">
<!-- other HTML goes here -->
<input name="searchString" id="searchString" type="hidden" ng-model="controller.data.currentSearch"/>
Then your controller may look something like this:
app.controller('MyController', function ($scope, $cookies) {
$scope.data = {
currentSearch: $cookies.currentSearch
};
// Note that the model is nested in a 'data' object to ensure that
// any ngIf (or similar) directives in your HTML pass by reference
// instead of value (so 2-way binding works).
});
I have html page like
<div ng-controller="userListControl">
...
</div>
<div ng-controller="userDetailsControl">
....
</div>
And i have angular Js code is
var userDirectory = angular.module('userDirectory',[]);
userDirectory.controller("userListControl", ['$scope','$http', function($scope, $http)
{
$http.get('data/userData.json').success (function(data){
$scope.users = data;
$scope.users.doClick = function(user,event) {
userInfo(user);
}
});
}]);
function userInfo(users)
{
console.log(user);
userDirectory.controller("userDetailsControl", function($scope)
{
console.log('well')
$scope.user = users;
console.log($scope.user)
});
}
Here Everything is working fine. But when we are calling click event, That userInfo called with particular Data. But Second controller gives an error(angular js Error).
I am new one in angular jS. I dont know this logic is correct or not.
I have list items in first Controller. When we are clicking on list, It gets data from particular list and passed to another design. That design have detailed data. So the 2nd controller shows particular list detailed Section
First, There is no need to declare your controller inside a function - I don't think that you're trying to lazy-load controllers. Make it available to your app when it starts.
Second, you need to pass data to the userDetailsControl controller. There are various ways to do this, but here you could just use the $rootScope.
var userDirectory = angular.module('userDirectory',[]);
userDirectory.controller("userListControl", function($scope, $rootScope, $http)
{
$scope.selectUser = function(user){
$rootScope.selectedUser = user;
}
$http.get('data/userData.json')
.success (function(data){
$scope.users = data;
});
})
.controller("userDetailsControl", function($scope, $rootScope){
$rootScope.$watch("selectedUser", function(newVal){
$scope.user = newVal;
}
}
and in your HTML:
<div ng-controller="userListControl">
<button ng-repeat="user in users" ng-click="selectUser(user)">{{user.name}}</button>
</div>
<div ng-controller="userDetailsControl">
<div>{{user.name}}</div>
<div>{{user.otherDetails}}</div>
</div>
I've created an application in angular js. In the application i'm having three controllers. The first controller MainController is in the body tag, within which i have another two controller FileController and TypeController.
Inside the TypeController I've a select box having the model name data.selectedFileTypes which shows several filenames. Now within the FileController controller I've another select box with model name fileproperty.allowsFiles, and having Yes and No values. The first time it get initialized within the FileController controller.
But when i select a different file from the select of the model data.selectedFileTypes how can i change the select value again to No of the model fileproperty.allowsFiles from the ng-change function of the file select
an anyone please tell me some solution for this
html
<body ng-controller="MainController">
:
:
<div ng-controller="TypeController">
<select ng-model="data.selectedFileTypes" ng-options="type.name for type in config.fileTypes ng-change="select()">
</select>
</div>
:
:
<div ng-controller="FileController">
<select ng-model="fileproperty.allowsFiles" ng-options="option.value as option.desc for option in files.options"></select>
</div>
:
:
</body>
script
app.controller('TypeController', function($rootScope, $scope)
{
$scope.select = function()
{
:
:
}
}
app.controller('FileController', function($rootScope, $scope)
{
$scope.fileproperty.allowsFiles = 'No';
}
Try this method.
app.controller('MainController', function($rootScope, $scope)
{
$scope.select = function()
{
:
$rootScope.selectedFiles = $scope.data.selectedFileTypes;
:
}
}
Inside your second controller
app.controller('FileController', function($rootScope, $scope)
{
$scope.$watch('selectedFiles', function () {
$scope.fileproperty.allowsFiles = 'No';
}, true);
}
You could also use $broadcast and $on here to handle this scenario:
app.controller('MainController', function($rootScope, $scope)
{
$scope.select = function()
{
$scope.$broadcast('someevent');
}
}
Inside your second controller
app.controller('FileController', function($rootScope, $scope)
{
$scope.$on('someevent', function () {
$scope.fileproperty.allowsFiles = 'No';
});
}
I think it's better practice to put shared properties into a service, then inject the service in both controllers.
Doesn't seem right to abuse a global namespace such as $rootScope when you don't have to.
Here's an example of a single service being bound to a select in one controller's scope and the same service being used in a second controller's scope to display the value in the service.
Here's a codepen: http://cdpn.io/LeirK and the snippets of code below
Here's the HTML:
<div ng-app="MyApp">
<div ng-controller="MainController">
<select ng-model='fileproperties.allowFiles'>
<option id="No">No</option>
<option id="Yes">Yes</option>
</select>
<div ng-controller="FileController">
{{fileproperties.allowFiles}}
<div>
</div>
</div>
And the Javascript:
var app = angular.module('MyApp',[]);
app.controller('MainController', ['$scope', 'FilePropertiesService', function(scope, fileproperties) {
scope.fileproperties = fileproperties;
}]);
app.controller('FileController', ['$scope', 'FilePropertiesService', function(scope, fileproperties) {
scope.fileproperties = fileproperties
}]);
app.service('FilePropertiesService', function(){
this.allowFiles = 'No';
});