I am looking to standardize the processing of ajax #anchors at the server side, using MVC.
Before a controller action is invoked I want to convert every request with ajax anchors into a request without ajax anchors, so that the controller code does not know there were anchors in the request:
For example:
1) /user/profile#user/photos should be treated as /user/photos
2) /main/index#user/profile/33 should be treated as /user/profile/33
What is the best technique in MVC to accomplish that?
This should necessarily be done on the client side, probably using jquery as everything that follows the # sign is never sent to the server.
I too struggle with same issue and I solved this problem after looking at Visual Studio 11 Developer Preview template code. I added following code in my _layout.cshtml, please note we must load jquery.mobile*.js file after following script tag:
<script type="text/javascript">
$(document).bind("mobileinit", function () {
// As of Beta 2, jQuery Mobile's Ajax navigation does not work in all cases (e.g.,
// when navigating from a mobile to a non-mobile page, or when clicking "back"
// after a form post), hence disabling it. http://jquerymobile.com/demos/1.0a3/#docs/api/globalconfig.html
#{
if (ViewBag.JqueryMobileAjaxEnabled != null && ViewBag.JqueryMobileAjaxEnabled == true)
{
#: $.mobile.ajaxEnabled = true;
}
else
{
#: $.mobile.ajaxEnabled = false;
}
}
});
</script>
**<script src="http://code.jquery.com/mobile/1.0b3/jquery.mobile-1.0b3.min.js"></script>**
Related
I want to be able to receive open/save dialog for a pdf file being returned from controller without using 'Html.Beginform' in ASP.NET MVC. I´m using 'Ajax.Beginform' since I can register events to fire OnBegin and OnComplete (which I think I can´t do when using Html.Beginform, or is it?).
I want to state that the problem is not creating and receiving the file from the server when using 'Html.Beginform' because that works fine, but without the events I want to use. I´m using 'Ajax.Beginform' and the file is being returned from the controller but nothing happens after that client side.
My cshtml
#using (Ajax.BeginForm("CreatePdf", "Print", null, new AjaxOptions() { LoadingElementId = "printLoading", OnSuccess = "printPageComplete"}, new { id = "exportForm" }))
{
//Stuff abbreviated
<input type="button" onclick="onPrint()" />
}
My jQuery
function onPrint()
{
//Stuff abbreviated
$("#exportForm").submit();
}
function printPageComplete(result)
{
//this 'result' variable is obviously holding the file from the controller
//stuff abbreviated
//TODO: I need to open file dialog here
}
My Controller
[HttpPost]
public ActionResult CreatePdf(FormCollection collection)
{
//Stuff abbreviated
return File(thePdf, _mimeTypes[ExportFormat.Pdf], "thePdf.pdf")
}
As you can see I´ve managed to get this far as in the printPageComplete function but I´m not sure where to go from here. Should I continue using the ajax form or should I stick with the html form and try to find other way to fire the events I so sorely need to use?
Perhaps I´m going about this all wrong and your help would be very well appreciated.
You can post a form without using Ajax.BeginForm. It is more work, but gives you more flexibility:
$('#exportForm').submit(function (e){
e.preventDefault();
//Do any validation or anything custom
$.ajax({
//set ajax settings
success: function(){
// Handle the success event
}
});
});
How does one go about displaying a controller action inside of jquery modal dialog?
Firstly you'll need your Javascript to load a url via ajax, this will depend on which kind of modal you are using etc, there's a ton of libraries out there. I will assume you are using the basic JQuery UI dialog Modal.
Example Link
<!-- this points to your action below.. -->
<a class="some-link" title="title here" href="mycontroller/test">testing</a>
Example Javascript (quick example found on google, many examples out there..)
$(document).ready(function() {
$('.some-link').each(function() {
var $link = $(this);
var $dialog = $('<div></div>')
.load($link.attr('href'))
.dialog({
autoOpen: false,
title: $link.attr('title'),
});
});
});
Now you need to make sure your action doesn't render the main layout when providing the content for the modal via the ajax request.
Here's a really simple method of doing that by replacing the base layout with an empty view for ajax requests. This isn't the best method but it's the simplest for this case ;)
Example Action
public function testAction()
{
if($this->getRequest()->isXmlHttpRequest()) {
$this->layout('application/layout/ajax-layout');
}
return new ViewModel(array()); // ..
}
application/layout/ajax-layout.phtml
<?php echo $this->content ?>
I think you want this kind of code http://jqueryui.com/dialog/#modal-message
inside the just display your action
Otherwise it's about to open an url into your modal it's like that http://blog.nemikor.com/2009/04/18/loading-a-page-into-a-dialog/
I have been struggling to get OAuth to work on my MVC4 mobile application.
I basically
Created an MVC4 Mobile application
Created an MVC4 Web application
Copied the AccountController, AccountModel, InitializeSimpleMembershipAttribute and all account views into my MVC4 Mobile application
Enabled Google and Facebook OAuth providers
I also ensured RoleManager was initialized according to simplemembershipprovider-not-working, although I do not think that was important. ( I needed it for some role-based security I was testing)
Disabled ajax ( I think) by setting data-ajax="false":
using (Html.BeginForm("ExternalLogin", "Account",new RouteValueDictionary { { "ReturnUrl", ViewBag.ReturnUrl } }, FormMethod.Post, new Dictionary<string, object> { { "data-ajax", false } })) (This did not seem to have any effect on the page - so I may be doing something wrong here...)
I can get to the LogIn view /Account/Login, and when I click the google button, the debugger breaks into public ActionResult ExternalLogin(string provider, string returnUrl)
However - the public ActionResult ExternalLoginCallback(string returnUrl) is never hit.
Visually, I get the jquery mobile "page loading" animation - then I get "Error Loading Page"
I have two questions:
How can I get more information when I try to figure out what happens?
How can I get OAuth working on my MVC4 mobile site?
BTW: Both sites target .Net4.0
OK - so I figured out the answer - the cuplrit was indeed the ajax in jQuery mobile.
I modified my _layout.cshtml so that it can render a custom script after loading jQuery, but before loading jQuery mobile:
#Scripts.Render("~/bundles/jquery","~/scripts/RemoveHashFromWindowLocation")
#RenderSection("beforeJqueryMobile", required: false);
#Scripts.Render( "~/bundles/jquerymobile")
#RenderSection("scripts", required: false)
Then I modified my Login.cshtml so that it contains the section:
#section BeforeJqueryMobile {
#Scripts.Render("~/scripts/disable-ajax.js")
}
And finally, I added the following to my scripts folder:
disable-ajax.js:
$(document).bind("mobileinit", function () {
$.mobile.ajaxEnabled = false;
});
RemoveHashFromWindowLocation.js: (Thanks to Facebook Oauth Login With Jquery Mobile #_=_)
if (window.location.hash == "#_=_")
window.location.hash = "";
Voila - OAuth working with jQuery mobile. :-)
The above answer from espenalb does work if your site loads directly to the login page, however if you have say a home page and then and a link to the login page(which uses the same layout), you will get an error loading page when you click one of the social login buttons.
To fix this add
<script>
$('#login-link').live("click", function () {
$.mobile.ajaxEnabled = false;
});
</script>
to the bottom of your mobile layout page, this will attach an event handler that will disable ajax to the login link.
I have used the signalR chat app (as laid out in this tutorial http://sergiotapia.com/2011/09/signalr-with-mvc3-chat-app-build-asynchronous-real-time-persistant-connection-websites/) in a standalone test site and it all works great.
I'm now trying to incorporate it into my larger project.
Now unfortunately my larger project has a body onload function defined, so i don't use the standard jquery $(function () {}); syntax for executing stuff on page load. This hasn't been too much of an issue so far, most jquery plugins and scripts get executed in the function called by my body onload and its fine.
But for some reason, my signalR code just isn't executing.
Its the exact same code as laid out above, only its called on my body load.
The page loads, does a post to /signalr/negotiate (which returns the url and clientID)
In my sample app which works, it then does a continuous post to /signalr/connect
In my other app, it simply does a single get to the page im currently on.
Its not making the post to connect.
Is there a way to manually call this?
Here is the source of the page not working.
Please note that the reason im not referencing JQuery itself is because its loaded in my master page. JQuery is present.
<script src="/public/javascript/jquery.signalR.min.js">
<script src="/public/javascript/json2.js">
<script type="text/javascript" src="/signalr/hubs">
<div>
<input type="text" id="msg" />
<input type="button" id="broadcast" />
<ul id="messages"></ul>
</div>
<script type="text/javascript">
function ExecuteOnLoad() {
// Proxy created on the fly
var chat = $.connection.chat;
// Declare a function on the chat hub so the server can invoke it
chat.addMessage = function (message) {
$('#messages').append('<li>' + message + '</li>');
};
$("#broadcast").click(function () {
// Call the chat method on the server
chat.send($('#msg').val());
});
// Start the connection
$.connection.hub.start();
}
</script>
EDIT : here is the chat hub
public class Chat : SignalR.Hubs.Hub
{
public void Send(string message)
{
//Call the addMessage method on all clients.
Clients.addMessage(message);
}
}
DOUBLE EDIT : ok, i've made a standard html page in my mvc project and wired up the onload event again and everything works fine. the problem seems to be that polling doesn't seem to working when i call
$.connection.hub.start();
instead its doing a get to the current url and returning the page again in the get request.
The problem had nothing to do with the question I asked.
I thought it might have to do with the onload function, but it did not.
The problem was because my page had a reference to the Jquery.Validate plugin.
The version I was using was 1.7, I updated to 1.9 of the plugin and it worked fine.
I've a bit of an odd issue with FCKEditor in my MVC project.
I've essentially got a View which renders a Partial View containing my FCKEditor (javascript, html and any other bits to make my control reusable throught my app)
I'm calling FCKEditor by doing the following:
<script src="<%= Url.Content("~/Scripts/fckeditor/fckeditor.js") %>" type="text/javascript" ></script>
<script type="text/javascript">
window.onload = function () {
var sBasePath = '<%= Url.Content("~/Scripts/fckeditor/") %>';
var oFCKeditor = new FCKeditor('FckEditor1');
oFCKeditor.BasePath = sBasePath;
oFCKeditor.ReplaceTextarea();
}
</script>
To validate my form, I'm using jQuery.Validate with the following code:
//FORM VALIDATION
$("#NewPageForm").validate({
errorContainer: "#errorblock-div1, #errorblock-div2",
errorLabelContainer: "#errorblock-div2 ul",
wrapper: "li",
rules: {
titleTxt: "required",
FckEditor1: "required"
},
messages: {
titleTxt: "You must enter a page title.",
FckEditor1: "You must enter at least some content."
},
submitHandler: function (form) {
form.submit();
}
});
Locally, when debugging my project, this works absolutely fine and throws up an error to the user when they leave the editor blank.
However, when I publish the application and run it from the server, whenever the editor has content in, the form won't validate, telling me that my FCKEditor control is empty, when it clearly isn't.
If I take away the validation, and submit the form with all the relevant boxes filled, the collection of collection("FckEditor1") is also empty, but again, running this locally works first time, every time.
I've had a search around and what seems to be happening is that my text area <%= Html.TextArea("FckEditor1", New With {.name = "FckEditor1", .class = "required"})%> isn't being populated with the content entered into the FCKEditor, even though this is the box that FCK is linked to.
The issue exists in all the browsers I've tried (IE8 and FF).
Not sure if it's also worth noting that FCK still renders fine too?
I'm not entirely convinced it's an issue with my code as it runs perfect locally. Is there anything I need to configure server-side or in web.config that could be causing it?
Has anyone else come across this or have any ideas as to how to solve the issue?
EDIT
I think I could be partway there with a fix.
I've added the following so far:
$('#publishBtn').button().click(function () {
if (typeof (FCKeditorAPI) == "object") {
FCKeditorAPI.GetInstance("FckEditor1").UpdateLinkedField();
} else {
alert('this is not an object!');
}
if ($("#FckEditor1").val() == "") {
alert("FCKEditor is empty");
} else {
$("#NewPageForm").submit();
}
});
Though, I now get sent to a blank page when the form is submitted, though nothing in my controller seems to be the issue - at least I don't think so as if there was an issue there, it'd do the same on my local machine.
One thing that may be causing your issue if you are validating on the server is that once it's on IIS you cannot post HTML content without the request validation preventing the FCKContent from being passed. Cassini wont check this so it works on your local machine.
try adding this to your the action which is called when you post to validate:
[ValidateInput(false)]
public ActionResult UpdateAction()
{
}
If possible, use CKEditor instead; it integrates with MVC much better.
http://ckeditor.com/
http://ckeditor.com/what-is-ckeditor
I found the source of my problem, and it's to do with the way I'm handling multiple submit buttons in my controller.
I've tweaked it and it's now fixed.