I'm new to programming and I want to pass a table input value to the controller. I tried this:
$("#btnsend").click(function () {
$.ajax({
type: "POST",
contentType: "application/json ; charset=utf-8",
data: {
buyerID: $('.BuyerID').val(),
},
url: "/SaveReservation",
success: function (data) {
alert('buyerID : ' + data);
},
error: function (result) {
alert('something went wrong');
}
})
});
The controller is like this :
[HttpPost]
[ValidateAntiForgeryToken]
public JsonResult SaveReservation(BuyerModel buyer)
{
return Json(buyer.DistibutorID);
}
When I click the button I get a success state but in the alert I get all the source code of the project after the word buyerID.
You may want to try this:
return Json(new { success = true, message = buyer.DistibutorID },
JsonRequestBehavior.AllowGet);
And:
alert('buyerID : ' + data.message );
Notice that this here in your script
data: {
buyerID: $('.BuyerID').val(),
},
Either must have the same structure as your BuyerModel Here
public JsonResult SaveReservation(BuyerModel buyer) <- BuyerModel that you are using
{
return Json(buyer.DistibutorID);
}
Or you can Just Change your Controller to accept only one argument Like this
public JsonResult SaveReservation(string buyerID) <- Follow the same Object structure you are passing in Ajax
{
return Json(buyer.DistibutorID);
}
Related
My controller:
[HttpPost]
public IActionResult UserRoleChanged(string roleName,string userName)
{
var a = roleName;
var b = userName;
return RedirectToAction("UserManager");
}
Script in view:
if (window.confirm('Are you sure that you want to change role?')) {
jQuery.ajax({
type: "POST",
url: "#Url.Action("UserRoleChanged", "DashBoard")",
dataType: 'json',
data: { 'roleName': this.text, 'userName': 'SomeName'},
cache: false,
success: function (data){
window.location.href = data;
},
failure: function (data) {
}
})};
When I run script above UserRoleChanged action does not invoke. If I try to remove userName variable from data in ajax then UserRoleChanged action method invokes without any problem. How can i pass multiple data to my controller? What is wrong with my code?
Remove the dataType: 'json' from the ajax, and try again. As you are trying to get the values on server side as normal variable, so dataType: 'json' is not required here.
You can create a model with same properties and pass it as a parameter. Its a good practice.
Looks like this.
public class User
{
public string RoleName { get; set; }
public string UserName { get; set; }
}
And the json looks like this example
{
"RoleName" : "somename",
"UserName" : "somename"
}
I'm making a website with web API, I tried to send JSON to my controller but this is the error I keep getting.
Multiple actions were found that match the request:
Post on type AuctionWebsiteASP.Controllers.MovesController
readDatabase on type AuctionWebsiteASP.Controllers.MovesController
newItem on type AuctionWebsiteASP.Controllers.MovesController
First I tried searching for a fix but none of the fixes here helped.
My Controller
public class MovesController : ApiController
{
[AcceptVerbs("GET", "POST")]
public HttpResponseMessage Post([FromBody] Product product)
{
products.Add(product);
newItem();
return Request.CreateResponse(HttpStatusCode.OK, product);
}
}
My JS
$.ajax({
type: "POST",
dataType: "json",
url: "/api/moves/",
data: source,
success: function (data) {
$("#nStart").val(null);
$("#nImg").val(null);
$("#nMaker").val(null);
$("#nModel").val(null);
$("#nSerial").val(null);
$("#nCpu").val(null);
$("#nRam").val(null);
$("#nGpu").val(null);
$("#nStorage").val(null);
$("#nBattery").val(null);
$("#nDrivers").val(null);
$("#nAccessories").val(null);
$("#nNotes").val(null);
console.log("Data has been sent!");
},
error: function (error) {
jsonValue = jQuery.parseJSON(error.responseText);
alert("ERROR!");
}
});
Thanks in advance!
Your route is probably like this
routes.MapHttpRoute(
name: "API Default",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional });
But in order to have multiple actions with the same http method you need to provide webapi with more information via the route like so:
routes.MapHttpRoute(
name: "API Default",
routeTemplate: "api/{controller}/{action}/{id}",
defaults: new { id = RouteParameter.Optional });
Try to use Route attribute to distinguish each action e.g
public class MovesController : ApiController
{
[Route("Product")]
public HttpResponseMessage Post([FromBody] Product product)
{
products.Add(product);
newItem();
return Request.CreateResponse(HttpStatusCode.OK, product);
}
}
$.ajax({
type: "POST",
dataType: "json",
url: "/api/moves/product",
data: source,
success: function (data) {
$("#nStart").val(null);
$("#nImg").val(null);
$("#nMaker").val(null);
$("#nModel").val(null);
$("#nSerial").val(null);
$("#nCpu").val(null);
$("#nRam").val(null);
$("#nGpu").val(null);
$("#nStorage").val(null);
$("#nBattery").val(null);
$("#nDrivers").val(null);
$("#nAccessories").val(null);
$("#nNotes").val(null);
console.log("Data has been sent!");
},
error: function (error) {
jsonValue = jQuery.parseJSON(error.responseText);
alert("ERROR!");
}
});
I'm working on an ASP.NET MVC 4 website and I've got some troubles with a functionality. I explain, I've to select entities displayed in a table with their linked checkbox :
Screenshot of my table where each row has a checkbox with the same Id as the entity
Console showing updates in the array
Inside my script I have been abled to store each checked Id's checkbox in an array and remove those if the checkbox is unchecked. But I can't pass the array to my controller's function to delete each selected entity in the database.
I used $.ajax() from jquery to send through a POST request the array (as JSON) but I always get 500 error :
JSON primitive invalid
Null reference
Here's my function in my script (I don't know if my array's format is valid) :
var sendDocsToDelete = function (docsArray) {
$.ajax({
type: 'POST',
url: 'Main/DeleteDocuments',
data: JSON.stringify(docsArray),
contentType: 'application/json; charset=utf-8',
datatype: 'json',
success: function (result) {
alert('Success ' + result.d);
},
error: function (result) {
alert('Fail ' + result.d);
}
});
}
Then, the POST call the following function in my controller :
[Authorize]
[WebMethod]
public void DeleteDocuments(string docsToDelete)
{
int id;
string[] arrayDocs = JsonConvert.DeserializeObject<string[]>(docsToDelete);
foreach (string docId in arrayDocs)
{
int.TryParse(docId, out id);
dal.DeleteDocument(id); // dal = DataAccessLayer is the class which interacts with the database by executing queries (select, delete, update...)
}
}
Update 2
[Authorize]
public ActionResult DeleteDocuments(int[] docsToDelete)
{
try{
foreach (string docId in arrayDocs)
{
int.TryParse(docId, out id);
dal.DeleteDocument(id); // dal = DataAccessLayer is the class which interacts with the database by executing queries (select, delete, update...)
}
return Json("Success");
}
catch
{
return Json("Error");
}
}
var sendDocsToDelete = function (docsArray) {
$.ajax({
type: 'POST',
url: 'Main/DeleteDocuments',
data: docsArray,
contentType: 'application/json; charset=utf-8',
datatype: 'json',
success: function (result) {
alert('Success ' + result.d);
},
error: function (result) {
alert('Fail ' + result.d);
}
});
}
Any ideas about this issue ? I hoped I was clear enough. Do not hesitate if you need more details.
If you are passing an integer array properly from $.ajax (i.e. your docsArray should be having value like [15,18,25,30,42,49]) then you should try :
[Authorize]
public ActionResult DeleteDocuments(int[] docsArray)
{
//int id;
//string[] arrayDocs = JsonConvert.DeserializeObject<string[]>(docsToDelete);
try {
foreach (int docId in docsArray)
{
//int.TryParse(docId, out id);
dal.DeleteDocument(docId); // dal = DataAccessLayer is the class which interacts with the database by executing queries (select, delete, update...)
}
return "Success ";
}
catch {
return "Error";
}
}
Update :
Your javascript code should be :
var sendDocsToDelete = function (docsArray) {
$.ajax({
type: 'POST',
url: 'Main/DeleteDocuments',
data: JSON.stringify(docsArray),
contentType: 'application/json; charset=utf-8',
datatype: 'json',
success: function (result) {
alert('Success ');
},
error: function (result) {
alert('Fail ');
}
});
}
Maybe the datatype in the JSON array is not a string? (This could happen if you have an array in the form of [45,64,34,6], or a mixed one like [345,"wef4"]).
To make sure something is a string in Javascript you can do this: var string = "".concat(otherVar);
Try changing your ajax data to something like this..
data : JSON.stringify({'docsToDelete':docsArray}),
Make these changes to your code.
In Jquery
data: docsArray, no need to stringify the array
In Controller
[Authorize] //remove [WebMethod]
public ActionResult DeleteDocuments(string[] docsToDelete) //Add ActionResult, Change parameter to accept array
{
int id;
string[] arrayDocs = docsToDelete; //no need of deserilization
foreach (string docId in arrayDocs)
{
int.TryParse(docId, out id);
dal.DeleteDocument(id); // dal = DataAccessLayer is the class which interacts with the database by executing queries (select, delete, update...)
}
return Json(id); //return id back to ajax call...
}
I have this jquery ajax get method on an Index razor in my application:
$.ajax({
url: "#Url.Action("SubmitProjectForPreapproval", "api/Project")",
type: "GET",
cache: false,
data: { projectId: "#ViewContext.RouteData.Values["ProjectId"]" }
}).done(function (data) {
var count = 0;
$.each(data, function (index, value) {
$("#ulMessages").append("<li>" + value + "</li>");
count++;
});
// Assume validation errors if more than 1 message
if (count > 1) {
$("#btnSubmit").removeAttr("disabled");
}
}).fail(function () {
$("#ulMessages").append("<li>An error occurred. Please try again later</li>");
$("#btnSubmit").removeAttr("disabled");
}).always(function () {
$("#imgAjaxLoader").hide();
});
This calls a method within the api/project controller that returns a list of strings:
[HttpGet]
public List<string> SubmitProjectForPreapproval(int projectId)
{ ... }
What I want to do is convert this to an ajax post method. I've been struggling to do just that for the better part of the day. My question is, what is everything that needs to change in order for this to happen? e.g. - change attribute of the method to [HttpPost], and how do I send it the route value? (int pojectId)
Edit: If I do this it works for some reason:
public List<string> SubmitProjectForPreapproval(/*int projectId*/)
{
int projectId = 3308;
...
}
Not sure why it doesn't find my method if I have the parameter there.
I'm not sure how the #Url stuff formats with your system - but just changing it to something like:
$.ajax({
url: "#Url.Action("SubmitProjectForPreapproval", "api/Project")",
type: "POST",
cache: false,
data: { projectId: "#ViewContext.RouteData.Values["ProjectId"]" }
}).done(function (data) {
If you're bit:
#Url.Action("SubmitProjectForPreapproval
..actually has any ?xxx values in it, you also need to add them into the data: { ... }
The problem was indeed the way I was sending the data to the controller action. I fixed it by doing the following:
Alter the ajax method (make use of JSON.stringify):
var projectIdObject = {
ProjectId: "#ViewContext.RouteData.Values["ProjectId"]",
}
$.ajax({
url: "#Url.Action("SubmitProjectForPreapproval", "api/Project")",
type: "POST",
cache: false,
data: JSON.stringify(projectIdObject),
contentType: 'application/json',
}).done(function (data) { ... }
Add a class to take this stringified value:
public class ProjectIdObject
{
public string ProjectId { get; set; }
}
Alter the controller action method to receive this new object and extract the value I want:
[HttpPost]
public List<string> SubmitProjectForPreapproval(ProjectIdObject projectIdObject)
{
int projectId = int.Parse(projectIdObject.ProjectId);
...
}
I have a problem related the ajax call request searched for it on stack overflow tried all the related help that i got but can't solve the problem. the problem is that i request to a controller from my view using this code.
<script type="text/javascript">
$(document).ready(function () {
$('#contactDiv ').click(function() {
var number = $(this).find('.ContactNumber').text();
var dataJson = {"contactNumber": number};
$.ajax({
type: "POST",
url: "../contactWeb/messages",
data: JSON.stringify(dataJson),
//data: dataJson,
//contentType: "application/json",
contentType: "application/json",
cache: false,
success: function (msg) {
//msg for success and error.....
alert(msg);
return true;
}
});
});
});
</script>
and the controller that receives the call is
[HttpPost]
public JsonResult messages(string dataJson)
{
Int64 userID = Convert.ToInt64(Session["userId"]);
try
{
List<MessagesModel> messagesModel = new List<MessagesModel>();
IMessages MessageObject = new MessagesBLO();
messagesModel = MessageObject.GetAllMessagesWeb(userID , dataJson);
//ViewData["Data"] = messagesModel;
}
catch (Exception e)
{
}
//return View();
string msg = "Error while Uploading....";
return Json(msg, JsonRequestBehavior.AllowGet);
}
but it passes NULL value to the controller
There are couple of issues need to be fixed
whats the need of
JsonRequestBehavior.AllowGet
when your action type is post.
If you are using asp.net mvc4 use Url.Action to specify url i.e
url:"#Url.Action("ActionName","ControllerName")"
Now Talking about your issue.
Your parameter names must match, change dataJson to contactNumber.Though its ok to use there isnt any need to use JSON.stringify as you are passing single string parameter.
[HttpPost]
public JsonResult messages(string contactNumber)
{
Int64 userID = Convert.ToInt64(Session["userId"]);
Hi could you change the name of your parameters string dataJson in your action to contactNumber in respect to the object you pass via your Ajax call
[HttpPost]
public JsonResult messages(string contactNumber) //here
{
Int64 userID = Convert.ToInt64(Session["userId"]);
try
{
List<MessagesModel> messagesModel = new List<MessagesModel>();
IMessages MessageObject = new MessagesBLO();
messagesModel = MessageObject.GetAllMessagesWeb(userID , contactNumber); //and here
//ViewData["Data"] = messagesModel;
}
catch (Exception e)
{
}
//return View();
string msg = "Error while Uploading....";
return Json(msg, JsonRequestBehavior.AllowGet);
}
If you want to get JSON in messages() try this:
<script type="text/javascript">
$(document).ready(function () {
$('#contactDiv ').click(function() {
var number = $(this).find('.ContactNumber').text();
var data = {"contactNumber": number};
var dataJson = JSON.stringify(data);
$.ajax({
type: "POST",
url: "../contactWeb/messages",
dataType: 'text',
data: "dataJson=" + dataJson,
//data: dataJson,
//contentType: "application/json",
cache: false,
success: function (msg) {
//msg for success and error.....
alert(msg);
return true;
}
});
});
});
</script>