How to call a method from API Controller using ajax - api

I want to call a method from API Controller using AJAX. I have tried the following
I have added one hidden field in the view (like what we are doing in mvc controller)
<input type="hidden" id="GetShoppingCartUrl" value="#Html.Action("GetShoppingCartUrl","Cart")"/>
Then I have written ajax
function GetShoppingCart() {
debugger;
var url = $('#GetShoppingCartUrl').val();
$.ajax({
type: "get",
url: url,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
},
error: function () {
}
});
}
But here it is not getting the method, GetShoppingCartUrl from the API Controller CartController. I want to call that method, what changes make it happening ?

function GetShoppingCart() {
debugger;
var url = "Cart/GetShoppingCartUrl"
$.ajax({
type: "get",
url: url,
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (response) {
},
error: function () {
}
});
}
you can directly put your actionlink in the url
Hope it helps. :)

Use this below code to get the url of your site in javascript and append it before the url in ajax call. e.g var url = baseUrl+ "Cart/GetShoppingCartUrl";
#{
string url = Request.Url.GetLeftPart(UriPartial.Authority) + Request.ApplicationPath;
if(url[url.Length-1]!='/')
{
url =url+ "/";
}
}
var baseUrl = '#url';
//alert(baseUrl);

Related

RazorPages return RedirectToPage not working

I've got an odd thing happening. On my index page I've got an ajax call that grabs a parameter off of an SVG and then hits the following code:
public async Task<IActionResult> OnPostStateClickAsync(string state)
{
HttpContext.Session.SetObject("CurrentFilters", SearchFilters);
SearchFilters.State = state;
return RedirectToPage("/Search");
}
I'm able to attach a debugger and see everything is working fine behind the scenes. The problem, the UI doesn't ever update and take me to the Search page. If I manually navigate there all the data is loaded and everything is fine.
Not seen this behavior before and I've used the same code in previous projects.
Here is the AJAX call in case it's relevant:
$(document).ready(function () {
$('path').click(function () {
var stateParameter = $(this).attr('id');
$.ajax({
type: "POST",
url: '/Index?handler=StateClick&state=' + stateParameter,
//data: searchTitle,
contentType: "application/json; charset=utf-8",
beforeSend: function (xhr) {
xhr.setRequestHeader("XSRF-TOKEN",
$('input:hidden[name="__RequestVerificationToken"]').val());
},
dataType: "json"
}).done(function (data) {
console.log(data.result);
location.reload();
});
});
});
You can change your code like bellow.
Action:
public async Task<IActionResult> OnPostStateClickAsync(string state)
{
//...
return new JsonResult(new { redirectToUrl = "/Search" });
}
In your Ajax:
$(document).ready(function () {
$('path').click(function () {
var stateParameter = $(this).attr('id');
$.ajax({
type: "POST",
url: '/Index?handler=StateClick&state=' + stateParameter,
//data: searchTitle,
contentType: "application/json; charset=utf-8",
beforeSend: function (xhr) {
xhr.setRequestHeader("XSRF-TOKEN",
$('input:hidden[name="__RequestVerificationToken"]').val());
},
dataType: "json",
success: function (response) {
window.location.href = response.redirectToUrl;
}
});
});
});
Test Result:

Amazon Gateway API with Lambda - Could not parse request body into json

I seem to be getting a issue with Amazon Gateway API not liking my sent params for example.
$.ajax({
url: "https://tibqwxuqoh.execute-api.us-east-1.amazonaws.com/dev/getitems",
type: "POST",
data: {
"device": "test",
"datetime": "1446757400919"
},
success: function (returnhtml) {
console.log(returnhtml);
$("#result").append("DOES NOT WORK - <br>" + JSON.stringify(returnhtml));
}
});
$.ajax({
url: "https://tibqwxuqoh.execute-api.us-east-1.amazonaws.com/dev/getitems",
type: "POST",
data: {},
success: function (returnhtml) {
console.log(returnhtml);
$("#result").append("<br>WORKS ???? - <br>" + JSON.stringify(returnhtml));
}
});
Here is a working example.
http://jsfiddle.net/Uwcuz/4315/
Can someone let me know why it wont let me send params every time i add a parameter i get this error.
{
Type = User;
message = "Could not parse request body into json.";
}
OK THIS WORKS BUT SEEMS A BIT WEIRD TO ME.
$.ajax({
url: "https://tibqwxuqoh.execute-api.us-east-1.amazonaws.com/dev/getitems",
type: "POST",
data: "{\"device\": \"test\",\"datetime\": \"1446757444524\"}",
success: function (returnhtml) {
console.log(returnhtml);
$("#result").append("WORKS - <br>" + JSON.stringify(returnhtml));
}
});
The problem lies in how you send the data to API Gateway.
Without knowing the details of your API configuration I am guessing that you have a Request Mapping setup for application/json.
jQuery will by default post your data as application/x-www-form-urlencoded but you want to send it as json.
You can do this without having to fiddle too much with the data yourself:
var requestParams = {
url: "https://tibqwxuqoh.execute-api.us-east-1.amazonaws.com/dev/getitems",
method: "POST,
contentType: "application/json",
dataType: "json",
data: JSON.stringify({
"device": "test",
"datetime": "1446757400919"
});
};
var request = $.ajax(requestParams);
The key here is JSON.stringify() and telling jQuery that the dataType is json as well as setting the contentType to application/json.

Passing form collection with Knockout.js in asp.net MVC

I am new to MVC and I am trying to create an application with Knockout.js to send data back to the server dynamically. I am following an example i found at:
http://www.mytecbits.com/microsoft/dot-net/knockout-js-and-bootstrap-with-asp-net-mvc-part-2
It works perfectly off the site, but i am trying to send data to multiple models instead just one as in the example
The Knockout code used in the example to send the data back to the server is
var urlPath = window.location.pathname;
var CreateArticleVM = {
Title: ko.observable(),
Excerpts: ko.observable(),
Content: ko.observable(),
Test: ko.observable(),
btnCreateArticle: function() {
$.ajax({
url: urlPath + '/Create',
type: 'post',
dataType: 'json',
data: ko.toJSON(this),
contentType: 'application/json',
success: function(result) {
window.location.href = urlPath + '/';
},
error: function(err) {
if (err.responseText == "success") {
window.location.href = urlPath + '/';
}
else {
alert(err.responseText);
}
},
complete: function() {}
});
}
};
ko.applyBindings(CreateArticleVM);
How do i modify the above code to be able to accept a FormCollection? Or what is the best solution to my problem?
Thanks
Say your service is expecting more than one argument like following.
[HttpPost]
public String Create(ModelA modela, ModelB modelb)
{
//Server code.
}
In order pass the data for Create method from client side you need to form your postdata as follows.
$.ajax({
url: urlPath + '/Create',
type: 'post',
dataType: 'json',
data: {modela: { "modela data in the expected form" }, modelb : { "modelb data.." } },
contentType: 'application/json',
success: function(result) {
window.location.href = urlPath + '/';
},
.
.
.
.
});

asp.net webapi validation

I have an API Controller and call action from JS:
$('#create-se').on('click', function () {
var data = {};
$.ajax({
url: 'api/registration',
type: 'POST',
data: data,
dataType: 'json',
contentType: 'application/json',
success: function () {
}
});
});
public bool Post(UserRegistrationViewModel model)
{
if (!ModelState.IsValid) { return false; }
return true;
}
Model has few required properties and few StringLength. When I send data from js to controller ModelState.IsValid always returns true. I can't figure out how to solve it. Even if posted model is null, Model.IsValid is true anyway
http://codebetter.com/johnvpetersen/2012/04/02/making-your-asp-net-web-apis-secure/
This website has a better way of doing validation and using headers to send the token across and if it invalid it will return validation failed.

how to call this calling WCF method continuously

I have an ajax enabled WCF service method :
[OperationContract]
public string Test(string name)
{ return "testing testing." + name; }
and I am calling it with following code:
$(document).ready(function () {
var varData = $("#NewSkill").val();
$("#Button1").click(function () {
$.ajax({
type: "POST",
url: "TimeService.svc/Test",
data: '{"name" : "John"}',
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
alert(msg.d);
}
});
});
});
I want to call this method continuously after every 5 seconds using above code . How can I do this ?
Move the $.ajax(); part to a Javascript function say AjaxCall(). Create a javascript variable
var isActivated = false;
$(document).ready(function () {
while(isActivated){
setTimeout("AjaxCall()",3000);
}
}
);
$("#Button1").click(isActivated = true)
Hope this helsps...