Ajax alert after controller's method success - ajax

I have a problem that I was stacked on for a while. I am rather new to this stuff so please be patient. I think it is like very simple to solve but I am running circles now. My intention is to make a simple alert that informs that method was completed. As you can see below my first attempt was made with simple string and if statement. I dont want to reload the page any more but now I have a problem that method ends later than alert script starts.
So I have a controller:
[HttpPost]
public ActionResult Executor(LMCMainViewModel model)
{
var curlsExecutor = _curls;
var applicationPurgeCurl = curlsExecutor.GetApplicationCurl(model);
var temporary = model.SuccessExecutionStatus = curlsExecutor.CurlCaller(model.ApplicationList.ApplicationCurl);
var tempListOfApplications = PopulateModel(model);
model.ApplicationList.ListOfApplications = tempListOfApplications.ApplicationList.ListOfApplications;
model.SuccessExecutionStatus = temporary;
return View("ListOfApplications", model);
}
And I have my view:
#model LMC.Models.LMCMainViewModel
#{
ViewData["Title"] = "Liberation";
}
#using (Html.BeginForm("HeaderString", "LMC"))
{
}
#using (Html.BeginForm("Executor", "LMC", FormMethod.Post))
{
<div class="col-sm-2" asp-action="ListOfApplications">
#Html.DropDownListFor(x => x.ApplicationList.ChosenApplication, Model.ApplicationList.ApplicationListItem, new { #id = "DropdownID" })
</div>
<div class="col-sm-2 col-sm-push-5">
#Html.HiddenFor(x => x.ApplicationList.ApplicationListItem)
<input class="btn ctn-success" id="submit" type="submit" value="Submit" />
<button id="submitButtonAjax" type="button" class="btn btn-success">Ajax button</button>
<div class="col-sm-12">
#Html.Label(null, (Model.SuccessExecutionStatus ? "Success" : " "),
new { Style = Model.SuccessExecutionStatus ? "color: green;" : "color: red;" })
</div>
</div>
}
Than I tried to implement many variations of Ajax script but I got so twisted that I can't even post you the best one... One thing I know is that when I remove: #using (Html.BeginForm("Executor", "LMC", FormMethod.Post)) and try to place it into Ajax it simply doesn't work. My intention is to have something that would work like this:
<script type="text/javascript">
$("#submitButtonAjax").on("click", function () {
$.ajax({
type: 'POST',
url: "/LMC/Executor",
success: function () {
alert("Went well");
}
});
</script>
I tried to convert controller method return into Json but it didnt work as well. I would appreciate any advices, where I can read about anything similar(I am aware that there are probably many similar topics, but I wan't able to implement anything that was working into my code, because I find my question one step backwards in comparison to others), or maybe it is that easy and I am missing something and you can just post a solution. Anyway, many thanks for any help.

The ajax call should look like bellow
$( document ).ready(function() {
$("#submitButtonAjax").on("click", function () {
var postData = {
FirstPropertyOfTheModel: ValueForTheFirstProperty,
SecondPropertyOfTheModel: ValueForTheSecondProperty,
};
$.ajax({
type: 'POST',
url: "/LMC/Executor",
data:postData,
success: function () {
alert("Went well");
},
error: function () {
alert("Opssss not working");
}
});
});
});
data is the value for the model of ActionResult method of the controller. The FirstPropertyOfTheModel and SecondPropertyOfTheModel will be replaced by the name of property and assign the corresponding value respectably. At url you can use
'#Url.Action("Executor", "LMC")'
so the ajax will look like
$( document ).ready(function() {
$("#submitButtonAjax").on("click", function () {
var postData = {
FirstPropertyOfTheModel: ValueForTheFirstProperty,
SecondPropertyOfTheModel: ValueForTheSecondProperty,
};
$.ajax({
type: 'POST',
url: '#Url.Action("Executor", "LMC")',
data:postData,
success: function () {
alert("Went well");
},
error: function () {
alert("Opssss not working");
}
});
});
});

Related

Updating a view from an ajax controller call

Here's the thing, I'm trying to update a view where an image and a DateTime are displayed.
I want the image and the time to update without reloading the page. So after some research I found that using an Ajax call should do it.
For some reason neither the time or the image update after the ajax call and I can't figure out why.
Am I missing something, or it's not the way I should do it?
Please keep in mind, I am new to asp.net and Ajax. Thanks :)
Here's my View with the Ajax script:
#model myApp.Models.ImageViewModel
#{
ViewBag.Title = "Image";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<script>
function refreshImage() {
$.ajax({
//url: "/Controller/ActionName",
async: true,
url: '/Image/GetImage',
type: 'GET',
success: function () {
setTimeout(refreshImage, 5000);
}
});
}
$(document).ready(function () {
setTimeout(refreshImage, 5000);
});
</script>
<div>
<div class="panel panel-info">
<div class="panel-heading"><h4>Image</h4></div>
<div class="panel-body">
<div class="ImgContainer">
<img src=#Model.ImageUrl>
<div>#Model.LastUpdateDate</div>
</div>
</div>
</div>
</div>
And here's the controller method:
public ActionResult GetImage()
{
DateTime lastUpdate = System.DateTime.Now;
string imageUrl = "http://lorempixel.com/1920/1080/animals";
ImageViewModel image = new ImageViewModel(lastUpdate, ImageUrl);
Debug.WriteLine("test");
return View(image);
}
Change your ajax call to this
function refreshImage() {
$.ajax({
dataType:'image/jpg',
url: '/Image/GetImage',
type: 'GET',
success: function () {
setTimeout(refreshImage, 5000);
}
});
}
Ok so I figured out what was going on. Since the url I used wasn't changing I forced the refresh of the image with a dull parameter on the url and also got the time to update at the same time.
Now my ajax call look like this.
$.ajax({
//url: "/Controller/ActionName"
url: '/Image/GetImage',
type: 'GET',
success: function () {
var time = new Date().toLocaleString();
$("#imageCam").attr("src", "#Model.ImageUrl" + "?" + time);
document.getElementById("theTime").innerHTML = time;
setTimeout(refreshImage, 5000);
}
});
Hope this help someone in the future.
See this question for more info
How to reload/refresh an element(image) in jQuery

knockout mapping (ko.mapping.fromJS()) not updating targets when async $.ajax call

I am trying to use ko.mapping to transform data to a viewmodel. The result come from an async call to a web service.
Simple view:
<div data-bind="with: myData">
<div data-bind="text: mapWidth"></div>
<div data-bind="text: mapHeight"></div>
<div data-bind="foreach: priceRanges">
<div data-bind="text: title"></div>
</div>
AND the view model is as follows:
var ViewModel = function() {
var self = this;
self.myData = null;
var data = {
action: 'GetPricePoints',
type: 'who cares'
};
$.ajax({
url: 'http://cdt.lotamore.com/api/imap',
data: { "": JSON.stringify(data) },
//async: false, // works!
async: true, // doesn't work!!!!!
type: 'post'
})
.done(function (data) {
self.myData = ko.mapping.fromJS(data);
})
.error(function (data) {
alertError(data);
})
.always(function () {
});
};
When I run this synchronously is works fine. However, when I run it asynchronously it doesn't update the myData within my view model.
I have created a fiddle here:
http://jsfiddle.net/jgergen/jF9pm/20/
I really don't want to make ajax calls that block the UI thread!
What am I doing wrong here?
Thanks,
Jim
Here is the solution:
I have changed the line:
self.myData = null;
to:
self.myData = ko.observable();
This is not all, I tried this before without favorable results. In addition to making myData observable, I had to change the way it is updated. Here is the new .done method:
.done(function (d) {
self.myData(ko.mapping.fromJS(d));
})
So, what I needed to do is treat this field as I would any other observable.
You can see it here at this new fiddle: http://jsfiddle.net/jgergen/jF9pm/47/
I hope that this helps more than me. I searched for a solution to this problem all over the web without any results. So here it is.
Thanks,
Jim

How to upload a file without reloading the whole page in mvc3?

I have been working with MVC for the past few days.
I have a problem in one of my pages, i.e I have a page where q user enters the required details and uploads a file. I have two buttons named Upload for Uploading File and Create for creating new profile.
My Problem
My problem is I don't want to reload the whole page when user clicks on upload button. I was thinking of using an webmethod for fileupload.
I don't know if what am I doing wrong here
Can any one correct me
This is my Webmethod in my controller named Create
Controller
[WebMethod]
public string FileUpload(HttpPostedFileBase file, BugModel model)
{
BugModel bug = null;
if (file != null && file.ContentLength > 0)
{
string path = "/Content/UploadedFiles/" + Path.GetFileName(file.FileName);
string savedFileName = Path.Combine(System.Web.HttpContext.Current.Server.MapPath ("~" +path));
file.SaveAs(savedFileName);
BugAttachment attachment = new BugAttachment();
attachment.FileName = "~" + path.ToString();
bug.ListFile.Add(attachment);
model = bug;
}
return "FileUploaded";
}
used a script to call the method
Javascript
<script type="text/javascript">
function UploadFile() {
$.ajax({
type:"Post",
url: "LogABug/FileUpload",
data: "{}",
contentType: "application/json; charset=utf-8",
dataType: "json",
success: function (msg) {
alert("File Uploaded")
},
error: function () {
ErrorMessage("Try Again");
}
});
}
</script>
can any one tell me how can I do this ...if this is the wrong method correct me the right one with the ideas please
You are uploading the file separately. Therefore you will need two actions:
public string Something(BugModel model) for the model.
public string FileUpload(HttpPostedFileBase file) for the file
Now, I would use jQuery Form Plugin for ajax submitting. Here is an example:
<script type="text/javascript">
$(function () {
$("#file-upload-form").submit(function () {
$(this).ajaxSubmit({
target: "#message",
cache: false
});
return false;
});
});
</script>
#using(Html.BeginForm("FileUpload", "LogABug", FormMethod.Post, new { enctype = "multipart/form-data", id = "file-upload-form" })) {
#Html.ValidationSummary(true)
<fieldset>
#Html.EditorFor(model => model.File)
<input type="submit" value="Upload" />
</fieldset>
}
<div id="message">
</div>
What ever you return from your action will be displayed in the div with id message

MVC submit form outside ajax.beginform

I have a certain ajax form and when submitted I want to include another form outside of that ajax form. Let me show you an example:
#using (Ajax.BeginForm("PayWithBankTransfer", "Payment", new { salesLineId = salesLine.SalesLineID }, new AjaxOptions
{
HttpMethod = "POST",
UpdateTargetId = "bankForm",
LoadingElementId = "spinnerBank"
}, new { id = "feedback-form" }))
{
//some stuff
<button type="submit">Reserve</button>
}
I have another tag outside of the form I want to include in the ajax form submission
<div id="theOtherStuff">
//otherStuff
</div>
How could I submit the other stuff along with the ajax form?
I don't think that MS unobtrusive AJAX supports this. So let's get rid of it and use plain jQuery. The .serialize() method is what you are looking for.
So we start by replacing the Ajax.BeginForm form with a regular Html.BeginForm
#using (Html.BeginForm(
"PayWithBankTransfer",
"Payment",
new { salesLineId = salesLine.SalesLineID },
FormMethod.Post,
new { id = "feedback-form" })
)
{
//some stuff
<button type="submit" class="t-button t-state-default" style="width: 100px; height: 50px;">Reserver</button>
}
then we provide an id to the other form so that we can reference it in our script:
<div id="theOtherStuff">
#using (Html.BeginForm(null, null, FormMethod.Post, new { id = "theOtherStuffForm" }))
{
//otherStuff
}
</div>
and all that's left is write our script in a separate javascript file to unobtrusively AJAXify this form:
$(function() {
$('#feedback-form').submit(function () {
$('#spinnerBank').show();
$.ajax({
url: this.action,
type: this.method,
data: $(this).add('#theOtherStuffForm').serialize(),
success: function (result) {
$('#bankForm').html(result);
},
complete: function () {
$('#spinnerBank').hide();
}
});
return false;
});
});
The following line should be of particular interest:
data: $(this).add('#theOtherStuffForm').serialize(),
As you can see the .serialize method allows convert multiple forms into suitable serialized form.
It is more than obvious that you should not have conflicting names with the input elements of the 2 forms (for example have 2 elements with the same name), otherwise the default model binder could go berserk. It's up to you to resolve those conflicts if there are any.

MVC3 AJAX Cascading DropDownLists

I am having a hard time figuring out how to get cascading drop down lists to work for my asp.net mvc3 application. I have a popup box and I would like to display 2 dropdownlists, the 2nd being populated based on what is selected in the first. Each time I run the application the controller method returns the correct list of values, but instead of hitting the success part of the ajax call I hit the error part. I have done lots of research and followed several examples I have found but something is still not quite right, any help would be greatly appreciated.
Edit:
Further inspection using firebug shows an error 500 internal server error which states: Exception Details: System.InvalidOperationException: A circular reference was detected while serializing an object of type 'System.Data.Entity.DynamicProxies.GameEdition
I have the following jQuery / AJAX:
<script type="text/javascript">
$(function () {
$("#PlatformDropDownList").change(function () {
var gameId = '#Model.GameID';
var platformId = $(this).val();
// and send it as AJAX request to the newly created action
$.ajax({
url: '#Url.Action("Editions")',
type: 'GET',
data: { gameId: gameId, platformId: platformId },
cache: 'false',
success: function (result) {
$('#EditionDropDownList').empty();
// when the AJAX succeeds refresh the ddl container with
// the partial HTML returned by the PopulatePurchaseGameLists controller action
$.each(result, function (result) {
$('#EditionDropDownList').append(
$('<option/>')
.attr('value', this.EditionID)
.text(this.EditionName)
);
});
},
error: function (result) {
alert('An Error has occurred');
}
});
});
});
Here is my controller method:
public JsonResult Editions(Guid platformId, Guid gameId)
{
//IEnumerable<GameEdition> editions = GameQuery.GetGameEditionsByGameAndGamePlatform(gameId, platformId);
var editions = ugdb.Games.Find(gameId).GameEditions.Where(e => e.PlatformID == platformId).ToArray<GameEdition>();
return Json(editions, JsonRequestBehavior.AllowGet);
}
Here is my web form html:
<div id="PurchaseGame">
#using (Html.BeginForm())
{
#Html.ValidationSummary(true, "Please correct the errors and try again.")
<div>
<fieldset>
<legend></legend>
<p>Select the platform you would like to purchase the game for and the version of the game you would like to purchase.</p>
<div class="editor-label">
#Html.LabelFor(model => model.PlatformID, "Game Platform")
</div>
<div class="editor-field">
#Html.DropDownListFor(model => model.PlatformID, new SelectList(Model.Platforms, "GamePlatformID", "GamePlatformName"), new { id = "PlatformDropDownList", name="PlatformDropDownList" })
</div>
<div class="editor-label">
#Html.LabelFor(model => model.EditionID, "Game Edition")
</div>
<div id="EditionDropDownListContainer">
#Html.DropDownListFor(model => model.EditionID, new SelectList(Model.Editions, "EditionID", "EditionName"), new { id = "EditionDropDownList", name = "EditionDropDownList" })
</div>
#Html.HiddenFor(model => model.GameID)
#Html.HiddenFor(model => model.Platforms)
<p>
<input type="submit" name="submitButton" value="Purchase Game" />
<input type="submit" name="submitButton" value="Cancel" />
</p>
</fieldset>
</div>
}
You cannot send JSON encoded requests using the GET verb. So replace type: 'GET' with type: 'POST' and it will work. Also since you have specified a JSON request you must, well, send a JSON request which is achieved with the JSON.stringify function: data: JSON.stringify({ gameId: gameId, platformId: platformId }),. But since you only have 2 values I think that using GET would be easier. So my recommendation is to remove the contentType: 'application/json' parameter and have your AJAX request look like this:
$.ajax({
url: '#Url.Action("Editions")',
type: 'GET',
data: { gameId: gameId, platformId: platformId },
cache: 'false',
success: function (result) {
$('#EditionDropDownList').empty();
// when the AJAX succeeds refresh the ddl container with
// the partial HTML returned by the PopulatePurchaseGameLists controller action
if(result.length > 0)
{
$.each(result, function (result) {
$('#EditionDropDownList').append(
$('<option/>')
.attr('value', this.EditionID)
.text(this.EditionName)
);
});
}
else
{
$('#EditionDropDownList').append(
$('<option/>')
.attr('value', "")
.text("No edition found for this game")
);
}
},
error: function () {
alert('An Error has occured');
}
});
Also in the DropDownListFor helper in your Razor markup I notice the following:
onchange = "Model.PlatformID = this.value;"
All I can say is that this doesn't do what you might think it does.
UPDATE:
It seems that you are getting a circular object reference error because you are passing your editions domain model to the Json method. Circular reference object hierarchies cannot be JSON serialized. Besides you don't need to waste the bandwidth by sending all the crap contained in this editions to the client. All your client needs is a collection of ids and names. So simply use view models:
public ActionResult Editions(Guid platformId, Guid gameId)
{
var editions = ugdb
.Games
.Find(gameId)
.GameEditions
.Where(e => e.PlatformID == platformId)
.ToArray<GameEdition>()
.Select(x => new
{
EditionID = x.EditionID,
EditionName = x.EditionName
})
.ToArray();
return Json(editions, JsonRequestBehavior.AllowGet);
}

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