How to use Angular service in place of Ajax url property - ajax

Here is code:
loader:function(param,success,error){
$.ajax({
//url: 'http://localhost/mvcController?assetid=1&dataformat=attribute',
url: assetsMVCService.execute("mvcController", { assetId: 1, dataFormat: 'attribute' }),
dataType: 'text',
type: 'post',
success: function (data) {
alert('ok');
},
error: function () {
error.apply(this, arguments);
}
});
assetsMVCService is my wrapper for Angular service. Unfortunately, a product that I am implementing forces me to use AJAX call to get data. Normally, I would use services to get data and then scope for data binding. Is it possible to use a service assigned to the url property in the code above? Interesting enough, I am hitting server with the code above. But something gets wrong on the server.
Thanks

Yes. You could do something like this:
app.service('MVC', function($http) {
var root = 'http://localhost/mvcController';
var queryParams = '?assetid=1&dataformat=attribute';
this.get = function(num) {
return $http.get(root + '/' + num + queryParams);
};
// or if you want to pass the query params in
this.execute = function(assetId, dataFormat) {
return $http.get(root + '?assetId=' + assetId + '&dataFormat=' + dataFormat;
};
// other routes
});
Note that $http can and should be used instead of $.ajax when you're using Angular. It does pretty much the same thing as $.ajax, except it plays nice with Angular.

Related

jQuery Ajax returns undefined result from asp.net core controller's POST action

Can't make friends out of my AJAX and MVC 6 controller.
This is how I define AJAX call for SetFormValues POST-action:
Index.cshtml
$.ajax({
type: "Post",
url: "Home/SetFormValues",
data: { Name: name, Phone: phone },
dataType: "json",
success: function (result) {
SuccessFunction(result)
},
error: function () {
alert("ALARM!");
},
async: false
})
I see that the controller works and executes SetFormValues action which is defined as the following:
HomeController.cs
[HttpPost]
public JsonResult SetFormValues(string Name, string Phone)
{
string NameErrorStr = string.IsNullOrWhiteSpace(Name) ? "Обязательное поле" : string.Empty;
string PhoneErrorStr = string.IsNullOrWhiteSpace(Phone) ? "Обязательное поле" : string.Empty;
var result = new { NameError = NameErrorStr, PhoneError = PhoneErrorStr };
var jresult = Json(result);
return jresult;
}
Debugger shows that action executes and my resulting JSON object fills correctly:
Finally, his is how SuccessFunction(result) is defined:
Index.cshtml again
function SuccessFunction(result) {
alert("Success function shit executed. result=" +
result + "NameError=" +
result.NameError + ". PhoneError=" +
result.PhoneError);
$("#nameerror").append(result.NameError);
$("#phoneerror").append(result.PhoneError);
}
Function works, alert is raised but result stay 'undefined' no matter what I do:
result = [object Object]
result.val = undefined
Maybe I have to deserialize JSON result properly or fill some properties in it's declaration above, I don't know.
I'm using the lattest libraries for jquery, validate and unobtrusive.
I also tried JSON.parse(result), as it mentioned in the lattest jQuery specification, but it didn't work as well.
Please, help me :)
In asp.net core, by default, the serializer uses camelCase property names for json serialization. So your result will be like this
{"nameError":"some message","phoneError":"some message here"}
Javascript is case sensitive. So use the correct case
$("#nameerror").append(result.nameError);
$("#phoneerror").append(result.phoneError);
For reference : MVC now serializes JSON with camel case names by default
its working perfectly when i have added this line in startup file
public void ConfigureServices(IServiceCollection services)
{
services.Configure<CookiePolicyOptions>(options =>
{
options.CheckConsentNeeded = context => true;
options.MinimumSameSitePolicy = SameSiteMode.None;
});
services.AddMvc().SetCompatibilityVersion(CompatibilityVersion.Version_2_1);
services.AddMvc().AddJsonOptions(options => options.SerializerSettings.ContractResolver = new DefaultContractResolver());
services.AddDbContext<DataContext>(option => option.UseSqlServer(Configuration.GetConnectionString("DbCrudOperation")));
}
function Edit(id) {
$.ajax({
type: 'GET',
url: "/AjacCrud/EditPahe/" + id,
dataType: 'JSON',
contentType: "application/json",
success: function (response) {
$("#nameEmp").val(response.ID);
console.log(response.ID);
},
error: function (GetError) {
alert(GetError.responseText);
}
});
};

Joomla 2.5 Ajax component not working

I've been trying for ages to get Json working in Joomla and I just can't do it. I think I've tried every combination of URL etc so any help would be great:
this is for the admin side structure looks like
admin
-controllers
--orderitem.php
-views
--orderitem
---tmpl
----orderitem.php
-controller.php
function updateNow(newrefresh) {
var dataJSON = JSON.encode (newrefresh);
var request = new Request.JSON({
method: 'post',
url: 'index.php?option=com_customersitedetails&view=orderitem&task=refreshscreen&format=raw',
data: {
json: dataJSON
},
onComplete: function(jsonObj) {
alert("Your form has been successfully submitted ");
}
}).send();
};
Although runs the alert box it doesn't retun JSON just
View not found [name, type, prefix]: orderitem, raw, customersitedetailsView
Any ideas where I can start? thanks
You're missing views/orderitem/view.raw.php containing a CustomersitedetailsViewOrderitem class.
views/orderitem/view.raw.php
class CustomersitedetailsViewOrderitem extends JViewLegacy
{
public function display($tpl = null)
{
$response = 'Your magic response here';
echo $response;
JFactory::getApplication()->close();
}
}
You can look here for proper ajax call in joomla
How to Write PHP in AJAX
inside your controllers you should have a file "mycall.json.php" this file will process and return a json format of your ajax call
Joomla doesn't gives a build in AJAX as part of it's system. my answer is from Josef Leblanc course in lynda.com
http://www.lynda.com/Joomla-1-6-tutorials/Joomla-1-7-Programming-and-Packaging-Extensions/73654-2.html
As I said :
Write this i the frontend JS :
$.ajax({
type: 'GET',
url: 'index.php',
data: {option: 'com_componenetname', task: 'taskname.youroperation', format: 'json', tmpl: 'raw'},
dataType: 'json',
async: true, // can be false also
error: function(xhr, status, error) {
console.log("AJAX ERROR in taskToggleSuceess: ")
var err = eval("(" + xhr.responseText + ")");
console.log(err.Message);
},
success: function(response){
// on success do something
// use response.valuname for server's data
}
,
complete: function() {
// stop waiting if necessary
}
});
in the backend you should have a file under com_componentname/controllers/taskname.json.php
the file should look like this
class ComponentnameControllerTaskname extends JControllerLegacy (Legacy only J3.0)
{
public function __construct($config = array())
{
parent::__construct($config);
$this->registerTask('operationname', 'functionname');
}
public function functionname() {
// do something in backend
echo json_encode(array(''var1' => val1, 'var2' => val2 ) );
}
}
nibra - I use this in all my joomla sites and its working perfect. your comment was wrong, pease give me my credit back

Multiple Ajax PUTs in Laravel 4 Giving Errors

I am updating my Model through a resource controller via jQuery Ajax Put. No problems at all the first time. This works fine:
$(".addNest").click(function() {
var nid = msg; //once the LI is added, we grab the return value which is the nest ID
var name = $('.nestIn').val();
if(name == '') {
$("textarea").css("border", "1px solid red");
}else {
$.ajax({
type: 'PUT', // we update the default value
url: 'nests/' + nid,
data: {
'name': name
},
success: function(msg) {
alert(msg)
window.location.replace('nests/' + nid ); //redirect to the show view
}
});
}
});
Later in a separate code block, I try to call the PUT again like this:
$(".nestEdit").click(function() {
$(".nestEdit").hide();
var name = $('.nestName').data("name");
var nid = $('.nestName').data("id");
$(".nestName").html("<textarea class='updateNest'>"+ name +"</textarea> <span><a href='#' class='btn btn-mini nestUpdate'><i class='icon-plus'></i> Update</a></span>");
$(".nestUpdate").click(function() {
var updatedName = $('.updateNest').val();
$.ajax({
type: 'PUT', // we update the default value
url: 'nests/' + nid,
data: {
'name': updatedName
},
success: function(msg) {
alert(msg) // showing the error here
location.reload( ); //refresh the show view
}
});
});
The 'updatedName' values and the 'nid' values are passing fine when I 'alert' them. When I view the return for the first PUT it comes back fine. However, when I view the return for the second PUT I get this:
{"error":{"type":"Symfony\\Component\\HttpKernel\\Exception\\NotFoundHttpException","message":"","file":"\/Applications\/MAMP\/htdocs\/n4\/bootstrap\/compiled.php","line":8643}}
Anyone have some insights here? As you can tell, I am trying to do an inline edit. I have tried to wrap everything into a function but still not helping...
Laravel does not use PUT and DELETE natively since it is not supported in all browsers, you need to send a POST request with '_method' set to either put or delete.
$.ajax({
type: 'POST',
url: 'nests/' + nid,
data: {
'name': updatedName,
'_method': update
},
success: function(msg) {
alert(msg) // showing the error here
location.reload( ); //refresh the show view
}
EDIT: Ajax request do support PUT AND DELETE.
In your JavaScript code, for the inline editing, you are not making proper use of $.
If you click on .nestEdit, it's inner function should not be calling it by name, provided you have multiple objects of the same class on that page. This is why you get the error. Instead of sending the nest ID, it's sending an array object, which your Laravel Router will not pick up, because it is more than likely not defined.
Simply put, you should not be doing this:
$(".nestEdit").click(function() {
$(".nestEdit").hide();
...
You should be making a call to this:
$(".nestEdit").click(function() {
$(this).hide();
...
So, for every .nestEdit within the inner function, you need to call for this instead.

How can I post data as form data instead of a request payload?

In the code below, the AngularJS $http method calls the URL, and submits the xsrf object as a "Request Payload" (as described in the Chrome debugger network tab). The jQuery $.ajax method does the same call, but submits xsrf as "Form Data".
How can I make AngularJS submit xsrf as form data instead of a request payload?
var url = 'http://somewhere.com/';
var xsrf = {fkey: 'xsrf key'};
$http({
method: 'POST',
url: url,
data: xsrf
}).success(function () {});
$.ajax({
type: 'POST',
url: url,
data: xsrf,
dataType: 'json',
success: function() {}
});
The following line needs to be added to the $http object that is passed:
headers: {'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'}
And the data passed should be converted to a URL-encoded string:
> $.param({fkey: "key"})
'fkey=key'
So you have something like:
$http({
method: 'POST',
url: url,
data: $.param({fkey: "key"}),
headers: {'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'}
})
From: https://groups.google.com/forum/#!msg/angular/5nAedJ1LyO0/4Vj_72EZcDsJ
UPDATE
To use new services added with AngularJS V1.4, see
URL-encoding variables using only AngularJS services
If you do not want to use jQuery in the solution you could try this. Solution nabbed from here https://stackoverflow.com/a/1714899/1784301
$http({
method: 'POST',
url: url,
headers: {'Content-Type': 'application/x-www-form-urlencoded'},
transformRequest: function(obj) {
var str = [];
for(var p in obj)
str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
return str.join("&");
},
data: xsrf
}).success(function () {});
I took a few of the other answers and made something a bit cleaner, put this .config() call on the end of your angular.module in your app.js:
.config(['$httpProvider', function ($httpProvider) {
// Intercept POST requests, convert to standard form encoding
$httpProvider.defaults.headers.post["Content-Type"] = "application/x-www-form-urlencoded";
$httpProvider.defaults.transformRequest.unshift(function (data, headersGetter) {
var key, result = [];
if (typeof data === "string")
return data;
for (key in data) {
if (data.hasOwnProperty(key))
result.push(encodeURIComponent(key) + "=" + encodeURIComponent(data[key]));
}
return result.join("&");
});
}]);
As of AngularJS v1.4.0, there is a built-in $httpParamSerializer service that converts any object to a part of a HTTP request according to the rules that are listed on the docs page.
It can be used like this:
$http.post('http://example.com', $httpParamSerializer(formDataObj)).
success(function(data){/* response status 200-299 */}).
error(function(data){/* response status 400-999 */});
Remember that for a correct form post, the Content-Type header must be changed. To do this globally for all POST requests, this code (taken from Albireo's half-answer) can be used:
$http.defaults.headers.post["Content-Type"] = "application/x-www-form-urlencoded";
To do this only for the current post, the headers property of the request-object needs to be modified:
var req = {
method: 'POST',
url: 'http://example.com',
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
},
data: $httpParamSerializer(formDataObj)
};
$http(req);
You can define the behavior globally:
$http.defaults.headers.post["Content-Type"] = "application/x-www-form-urlencoded";
So you don't have to redefine it every time:
$http.post("/handle/post", {
foo: "FOO",
bar: "BAR"
}).success(function (data, status, headers, config) {
// TODO
}).error(function (data, status, headers, config) {
// TODO
});
As a workaround you can simply make the code receiving the POST respond to application/json data. For PHP I added the code below, allowing me to POST to it in either form-encoded or JSON.
//handles JSON posted arguments and stuffs them into $_POST
//angular's $http makes JSON posts (not normal "form encoded")
$content_type_args = explode(';', $_SERVER['CONTENT_TYPE']); //parse content_type string
if ($content_type_args[0] == 'application/json')
$_POST = json_decode(file_get_contents('php://input'),true);
//now continue to reference $_POST vars as usual
These answers look like insane overkill, sometimes, simple is just better:
$http.post(loginUrl, "userName=" + encodeURIComponent(email) +
"&password=" + encodeURIComponent(password) +
"&grant_type=password"
).success(function (data) {
//...
You can try with below solution
$http({
method: 'POST',
url: url-post,
data: data-post-object-json,
headers: {'Content-Type': 'application/x-www-form-urlencoded'},
transformRequest: function(obj) {
var str = [];
for (var key in obj) {
if (obj[key] instanceof Array) {
for(var idx in obj[key]){
var subObj = obj[key][idx];
for(var subKey in subObj){
str.push(encodeURIComponent(key) + "[" + idx + "][" + encodeURIComponent(subKey) + "]=" + encodeURIComponent(subObj[subKey]));
}
}
}
else {
str.push(encodeURIComponent(key) + "=" + encodeURIComponent(obj[key]));
}
}
return str.join("&");
}
}).success(function(response) {
/* Do something */
});
Create an adapter service for post:
services.service('Http', function ($http) {
var self = this
this.post = function (url, data) {
return $http({
method: 'POST',
url: url,
data: $.param(data),
headers: {'Content-Type': 'application/x-www-form-urlencoded'}
})
}
})
Use it in your controllers or whatever:
ctrls.controller('PersonCtrl', function (Http /* our service */) {
var self = this
self.user = {name: "Ozgur", eMail: null}
self.register = function () {
Http.post('/user/register', self.user).then(function (r) {
//response
console.log(r)
})
}
})
There is a really nice tutorial that goes over this and other related stuff - Submitting AJAX Forms: The AngularJS Way.
Basically, you need to set the header of the POST request to indicate that you are sending form data as a URL encoded string, and set the data to be sent the same format
$http({
method : 'POST',
url : 'url',
data : $.param(xsrf), // pass in data as strings
headers : { 'Content-Type': 'application/x-www-form-urlencoded' } // set the headers so angular passing info as form data (not request payload)
});
Note that jQuery's param() helper function is used here for serialising the data into a string, but you can do this manually as well if not using jQuery.
var fd = new FormData();
fd.append('file', file);
$http.post(uploadUrl, fd, {
transformRequest: angular.identity,
headers: {'Content-Type': undefined}
})
.success(function(){
})
.error(function(){
});
Please checkout!
https://uncorkedstudios.com/blog/multipartformdata-file-upload-with-angularjs
For Symfony2 users:
If you don't want to change anything in your javascript for this to work you can do these modifications in you symfony app:
Create a class that extends Symfony\Component\HttpFoundation\Request class:
<?php
namespace Acme\Test\MyRequest;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\HttpFoundation\ParameterBag;
class MyRequest extends Request{
/**
* Override and extend the createFromGlobals function.
*
*
*
* #return Request A new request
*
* #api
*/
public static function createFromGlobals()
{
// Get what we would get from the parent
$request = parent::createFromGlobals();
// Add the handling for 'application/json' content type.
if(0 === strpos($request->headers->get('CONTENT_TYPE'), 'application/json')){
// The json is in the content
$cont = $request->getContent();
$json = json_decode($cont);
// ParameterBag must be an Array.
if(is_object($json)) {
$json = (array) $json;
}
$request->request = new ParameterBag($json);
}
return $request;
}
}
Now use you class in app_dev.php (or any index file that you use)
// web/app_dev.php
$kernel = new AppKernel('dev', true);
// $kernel->loadClassCache();
$request = ForumBundleRequest::createFromGlobals();
// use your class instead
// $request = Request::createFromGlobals();
$response = $kernel->handle($request);
$response->send();
$kernel->terminate($request, $response);
Just set Content-Type is not enough, url encode form data before send.
$http.post(url, jQuery.param(data))
I'm currently using the following solution I found in the AngularJS google group.
$http
.post('/echo/json/', 'json=' + encodeURIComponent(angular.toJson(data)), {
headers: {
'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8'
}
}).success(function(data) {
$scope.data = data;
});
Note that if you're using PHP, you'll need to use something like Symfony 2 HTTP component's Request::createFromGlobals() to read this, as $_POST won't automatically loaded with it.
AngularJS is doing it right as it doing the following content-type inside the http-request header:
Content-Type: application/json
If you are going with php like me, or even with Symfony2 you can simply extend your server compatibility for the json standard like described here: http://silex.sensiolabs.org/doc/cookbook/json_request_body.html
The Symfony2 way (e.g. inside your DefaultController):
$request = $this->getRequest();
if (0 === strpos($request->headers->get('Content-Type'), 'application/json')) {
$data = json_decode($request->getContent(), true);
$request->request->replace(is_array($data) ? $data : array());
}
var_dump($request->request->all());
The advantage would be, that you dont need to use jQuery param and you could use AngularJS its native way of doing such requests.
Complete answer (since angular 1.4). You need to include de dependency $httpParamSerializer
var res = $resource(serverUrl + 'Token', { }, {
save: { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' } }
});
res.save({ }, $httpParamSerializer({ param1: 'sdsd', param2: 'sdsd' }), function (response) {
}, function (error) {
});
In your app config -
$httpProvider.defaults.transformRequest = function (data) {
if (data === undefined)
return data;
var clonedData = $.extend(true, {}, data);
for (var property in clonedData)
if (property.substr(0, 1) == '$')
delete clonedData[property];
return $.param(clonedData);
};
With your resource request -
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
}
This isn't a direct answer, but rather a slightly different design direction:
Do not post the data as a form, but as a JSON object to be directly mapped to server-side object, or use REST style path variable
Now I know neither option might be suitable in your case since you're trying to pass a XSRF key. Mapping it into a path variable like this is a terrible design:
http://www.someexample.com/xsrf/{xsrfKey}
Because by nature you would want to pass xsrf key to other path too, /login, /book-appointment etc. and you don't want to mess your pretty URL
Interestingly adding it as an object field isn't appropriate either, because now on each of json object you pass to server you have to add the field
{
appointmentId : 23,
name : 'Joe Citizen',
xsrf : '...'
}
You certainly don't want to add another field on your server-side class which does not have a direct semantic association with the domain object.
In my opinion the best way to pass your xsrf key is via a HTTP header. Many xsrf protection server-side web framework library support this. For example in Java Spring, you can pass it using X-CSRF-TOKEN header.
Angular's excellent capability of binding JS object to UI object means we can get rid of the practice of posting form all together, and post JSON instead. JSON can be easily de-serialized into server-side object and support complex data structures such as map, arrays, nested objects, etc.
How do you post array in a form payload? Maybe like this:
shopLocation=downtown&daysOpen=Monday&daysOpen=Tuesday&daysOpen=Wednesday
or this:
shopLocation=downtwon&daysOpen=Monday,Tuesday,Wednesday
Both are poor design..
This is what I am doing for my need, Where I need to send the login data to API as form data and the Javascript Object(userData) is getting converted automatically to URL encoded data
var deferred = $q.defer();
$http({
method: 'POST',
url: apiserver + '/authenticate',
headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
transformRequest: function (obj) {
var str = [];
for (var p in obj)
str.push(encodeURIComponent(p) + "=" + encodeURIComponent(obj[p]));
return str.join("&");
},
data: userData
}).success(function (response) {
//logics
deferred.resolve(response);
}).error(function (err, status) {
deferred.reject(err);
});
This how my Userdata is
var userData = {
grant_type: 'password',
username: loginData.userName,
password: loginData.password
}
The only thin you have to change is to use property "params" rather than "data" when you create your $http object:
$http({
method: 'POST',
url: serviceUrl + '/ClientUpdate',
params: { LangUserId: userId, clientJSON: clients[i] },
})
In the example above clients[i] is just JSON object (not serialized in any way). If you use "params" rather than "data" angular will serialize the object for you using $httpParamSerializer: https://docs.angularjs.org/api/ng/service/$httpParamSerializer
Use AngularJS $http service and use its post method or configure $http function.

Jquery Ajax - Tumblr API v2

I'm trying to delve into the depths of the murky world of Tumblr, and can't understand how to get over the following error:
Uncaught SyntaxError: Unexpected token :
I believe it may be because I'm getting back json, but trying to use jsonp. Here's what I'm trying to send:
$(function(){
$.ajax({
type: "GET",
url : "http://api.tumblr.com/v2/blog/MyTumblrName.tumblr.com/info",
dataType: "jsonp",
data: {
api_key : "MyTumblrApi"
},
success: function(data){
console.log(data);
},
});
});
I get a 200 OK response, and the data but still the above error (which I don't understand and would like to know more about)
Tumblr also kindly points out the following, but I'm unclear on the specifics.
All requests made with HTTP GET are JSONP-enabled. To use JSONP,
append jsonp= and the name of your callback function to the request.
JSONP requests will always return an HTTP status code of 200 but will
reflect the real status code in the meta field of the JSON response.
Any help would be awesome, thanks!
Do what Tumblr is telling you to - add a callback function name to the request
myJsonpCallback = function(data)
{
console.log(data);
}
$.ajax({
type: "GET",
url : "http://api.tumblr.com/v2/blog/MyTumblrName.tumblr.com/info",
dataType: "jsonp",
data: {
api_key : "MyTumblrApi",
jsonp : "myJsonpCallback"
}
});
========================================================
EDIT: The console.log thing is a syntax error since I didn't actually test this code.
What happens to success? I don't really know. Try and find out :) It will probably be called but data parameter likely be null or something.
The issue here is that jQuery names it's callback parameter callback, where as Tumblr is expecting jsonp. Upon 200 response jQuery likely simply eval()s the response, which is why myJsonpCallback is actually called.
In case you don't want to use jQuery:
var tumblrFeed = document.createElement('script');
tumblrFeed.setAttribute("src", "http://api.tumblr.com/v2/blog/{blog.tumblr.com}/posts?api_key={your api key}&jsonp=callback");
document.getElementsByTagName("head")[0].appendChild(tumblrFeed)
function callback(data){
console.log(data);
}
I've created simple function for this purpose:
function jsonpRequest(opt){
var params = "";
var blogName = "{your blog name}";
var api_key = "{api key}";
if("selector" in opt){params = "id=" + opt.selector;}
if(("offset" in opt) && ("limit" in opt)){params = "limit=" + opt.limit + "&offset=" + opt.offset;}
if("callback" in opt){params += "&jsonp=" + opt.callback;}else{params += "&jsonp=callback";}
params += "&api_key=" + api_key;
var tumblrFeed = document.createElement('script');
tumblrFeed.setAttribute("src", "http://api.tumblr.com/v2/blog/" + blogName + "/posts?" + params);
document.getElementsByTagName("head")[0].appendChild(tumblrFeed)
}
How to use it:
jsonpRequest({offset: 50, limit: 5});
function callback(data){do stuff here ...}
Alternative usage:
jsonpRequest({offset: 50, limit: 5, callback: "nameOfMyAmazingCallbackFunction"});
function nameOfMyAmazingCallbackFunction(data){do stuff here ...}

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