I am new in AngularJS. I was trying to call json file from factory function but it's showing my var customers = []; array is not updating. Please help.
Below is my code.
var demoApp = angular.module("myApp", []);
demoApp.factory('simpleFactory', ['$http', function($http){
return {
getCustomer: function(){
var customers = [];
return $http.get("http://www.w3schools.com/website/Customers_JSON.php")
.success(
function(data){
customers = data;
},
function(error){
console.log(error);
});
console.log(customers)
}
}
}]);
demoApp.controller("emplyCtrl", function($scope, simpleFactory){
$scope.customers = simpleFactory.getCustomer();
});
Demo Fiddle
Try something like this:
demoApp.factory('simpleFactory', ['$http', function($http){
return {
getCustomer: function(){
return $http.get("json/customers.json").then(
function(response){
var customers = [];
customers = response.data;
},
function(error){
console.log(error);
});
}
}
}]);
use this in your controller:
demoApp.controller("emplyCtrl", function($scope, simpleFactory){
simpleFactory.getCustomer().then(function(response){
$scope.customers = response.data;
});
});
Since the view (HTML) reads from the controller's $scope, you have to put the data in $scope somewhere in the controller. Setting it in the factory only allows access from within the factory.
Here is the working Fiddle
Hope this helps!
Don't you think that you should put "$" sign before http?
I think that the '$http' there should indicate that it is serializable. That is why, the $http should be stated in the parameter section the same way just like you mentioned in the previous string statement.
Additionally, you cannot just use http, since the syntax is to use $ in front of the http.
Otherwise, angular dll will not recognize your code.
demoApp.factory('simpleFactory', ['$http', function($http){
var customers = [];
$http.get("json/customers.json")
.success(function(data){
customers = data;
});
var factory = {};
factory.getCustomer = function(){
return customers;
};
return factory;
}]);
Take a look at the example here:
http://www.w3schools.com/angular/angular_http.asp
Thank you,
Related
I generate a code with editor.swagger and I want to code a GUI with angular for that code. Since I'm newbie in angular, I dind't understand well how to start programming. I first decide to create 3 files : index.html, index.js and service.js.
Here is a part of my code :
I don't know if it's the good beginning or not. But the problem is that I don't have any idea how what I should do for POST and DELETE. Can you help me please?
You can do the standard 4 methods in Angluar JS(POST,GET,PUT,DELETE). To use these in angular you have to use the $http service that angular provides. To find out more about it check their documentation: https://docs.angularjs.org/api/ng/service/$http
From the Angular $http documentation:
Complete list of shortcut methods:
$http.get
$http.head
$http.post
$http.put
$http.delete
$http.jsonp
$http.patch
You can also use the method parameter in the $http service. So $http(method: 'DELETE', ...)
var app = angular.module('app');
app.service('apiService', ['$http', function($http){
this.get = function(){
return $http.get(URL);
};
this.delete = function(id){
return $http.delete(URL, id);
}
this.post = function(data){
return $http.post(URL, data);
}
}]);
app.controller('controller', ['$scope', 'apiService', function($scope, apiService){
var getData = apiService.get().success(function(){
});
}]);
You can use $resource and return it as a service.
app.factory('factoryResource', ['$resource', function($resource) {
var resource = {
getResource: function(context) {
var rsc = $resource(context, {}, {'update': {method: 'PUT'}});
return rsc;
}
};
return resource; }])
In your controller you should inject the newly created service as below:
app.controller('myCtrl', function($scope, factoryResource) {
$scope.resource = factoryResource.getResource('http://localhost:8080/api/v1/projects');
$scope.resource.save(object, successCallback, errorCallback); //post
$scope.resource.query(successCallback, errorCallback); //get all
$scope.resource.get({id: object.id}, successCallback, errorCallback); //get a specific object
$scope.resource.delete({id: object.id}, successCallback, errorCallback); //delete
}
Hope this helps;
Basically we have 4 method for a REST operation
Create (POST)-- To Create a new User (just for an example, it can be anything)
Read (GET) -- To get all users
Update (PUT) -- To update a user's property
Delete (DELETE) -- To delete a user
Let me know if you need further clarification.
In angular using service you can do that.
var app = angular.module('app', []);
app.factory('UserService', function($http){
var user = {};
user.post = function(data){
return $http.post('url', data);
}
user.get = function(){
return $http.get('url');
}
user.delete = function(id){
return $http.delete('url');
}
user.update = function(id, data){
return $http.put('url', data);
}
return user
});
app.controller('Controller', function('UserService'){
// Get
UserService.get().success(function(){
});
UserService.post(data).success(function(){
});
UserService.delete(id).success(function(){
});
UserService.get(id, data).success(function(){
});
})
This can be done easily through $resource, if you URL is proper rest.
I am trying to set the controllers scope variable to the data, however no luck. The console.log in the controller shows undefined. Appreciate the help!
My angular service has the following code --
service('VyrtEventService', ['$http', function($http) {
var events = [];
this.getArtistEvents = function(artistId) {
var url = '/api/users/' + artistId + '/';
var promise = $http.get(url).success(function(data, status, headers, config) {
events = data.artist.events;
console.log(events);
return events;
}).catch(function(error) {
status = 'Unable to load artist data: ' + error.message;
console.log(status);
});
return promise;
};
}]);
And I am referencing it in the controller as follows --
VyrtEventService.getArtistEvents($scope.artistId).then(function(data){
$scope.events = data.data.artist.events;
});
console.log($scope.events);
You should just set $scope.events = data in your controller cause your promise already returns data.artist.events when it resolves
To pass scope to service from anywhere in controller. Make sure you inject service .
controllersModule.controller('MyCtrl', function($scope, $filter, $http, $compile, ngTableParams, **FactoryYouwant**)
{
**FactoryYouwant**.getdata($scope.**scopeYoutwantTopass**).then (function(responseData){
var ResponseFromServer =responseData.data;
}
in service
controllersModule.factory('**FactoryYouwant**, function($http) {
var responseData = null;
return {
getdata : function(**data**){ (you dont have to use $)
responseData = $http.post or whatever actually gets you data;
return responseData;
}
};
});
I hope this helps you to call get data from service anywhere in controller.
My purpose is to consume a REST web service in AngularJS and I am making some trials right now. Below code is not working and throwing following exception.
Can you help me identifty the problem?
Thanks in advance.
function getUsersFromLocal($scope,$http)
{
$http.get('http://localhost:8080/people').
success(function(data) {
$scope.data = data;
});
return data;
}
Error is: TypeError: Cannot read property 'get' of undefined
at getUsersFromLocal.
The service is accessible and I tested it through some REST clients.
Try like this , this way i found on w3school.
var app = angular.module('myApp4', []);
app.controller('customersCtrl', function($scope, $http) {
$http.get("http://www.w3schools.com/angular/customers.php")
.success(function(response) {
$scope.data= response.records;
});
});
If I understood correctly getUsersFromLocal function is inside controller, basically the function parameters are killing the $scope, $http object existence, You need to remove them from parameter & Also removed the return statement which was outside $http which won't work in anyways.
Code
app.controller('mainCtrl', function() {
$scope.getUsersFromLocal = function() {
$http.get('http://localhost:8080/people').
success(function(data) {
$scope.data = data;
});
};
$scope.getUsersFromLocal(); //call ajax method
});
if getUsersFromLocal is not a controller or service, and you are invoking this function manually, you should pass $http and $scope objects to it, like this
module.controller('TestController', function($scope, $http) {
function getUsersFromLocal($scope,$http) {
$http.get('http://localhost:8080/people').
success(function(data) {
$scope.data = data;
});
}
getUsersFromLocal($scope, $http); // pass this services manually
});
I want bind the values from WCF service to controller. but am not able to bind the values from WCF result. but if i use online webservice means its working perfectly.
please help me. i wasted lots of time. i share the code and screen which is worked.
This is My HTML Code.
<div ng-controller = "fessCntrl">
<ul><li ng-click="alertSwap()">click </li></ul>
<ul><pre>data {{data|json}}</pre></ul>
</div>
This is my Angular JS Code
var fessmodule = angular.module('myModule', ['ngResource']);
fessmodule.controller('fessCntrl', function ($scope, stockData) {
$scope.alertSwap = function () {
stockData.query('somedata')
.then(function (result) {
$scope.data = result.data;
}, function (result) {
alert("Error: No data returned");
});
}
});
fessmodule.$inject = ['$scope', 'Data'];
fessmodule.factory('stockData', ['$http', '$q', function ($http, $q) {
var factory = {
query: function (value) {
// here you can play with 'value'
var data = $http.get('http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22YHOO%22)%0A%09%09&env=http%3A%2F%2Fdatatables.org%2Falltables.env&format=json');
var deferred = $q.defer();
deferred.resolve(data);
return deferred.promise;
}
}
return factory;
}]);
This is perfectly working Online webservice.
This my webservice which is not working my WCF Service.
try this
query: function (value) {
// here you can play with 'value'
var data =[];
**$http.get('http://query.yahooapis.com/v1/public/yql?q=select%20*%20from%20yahoo.finance.quotes%20where%20symbol%20in%20(%22YHOO%22)%0A%09%09&env=http%3A%2F%2Fdatatables.org%2Falltables.env&format=json').success(response)
{
data = response;//Or value=response.Data;
};**
var deferred = $q.defer();
deferred.resolve(data);
return deferred.promise;
}
Instead of your's ..
Is there any way to configure Angular app to make it available?
Im using a factory.
By the way, I'm using localhost as webserver but I'm making a request to other server (same network).
angular.module('demoApp.factories', [])
.factory('dataFactory', ['$http', function($http) {
var urlBase = 'external-server:8080';
var dataFactory = {};
dataFactory.getTest = function () {
return $http.get(urlBase + '/test');
};
return dataFactory;
}]);
Finally found the solution. Will post here, maybe it can help others:
angular.module('demoApp.factories', [])
.factory('dataFactory', ['$http', function($http) {
var urlBase = 'external-server:8080';
var dataFactory = {};
dataFactory.getTest = function () {
//Note the $http method changed and a new parameter is added (callback)
//the value of the callback parameter can be anything
return $http.jsonp(urlBase + '/test?callback=myCallback');
};
return dataFactory;
}]);
The controller file basically just calling this factory:
angular.module('demoApp.controllers', []).controller('controller1', ['$scope', 'dataFactory',
function ($scope, dataFactory) {
$scope.status;
$scope.data;
dataFactory.getTest().success(function (data)
{
$scope.data = data;
}).error(function (error)
{
$scope.status = 'Unable to load customer data: ' + error.message;
});
You may be looking to configure the $httpProvider as specified here: http://better-inter.net/enabling-cors-in-angular-js/
Another way is to create a simple http proxy on your front-end server to make external requests look like to angular that they're coming from the same server.