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POController AJAX method to return AJAX ActionLink
 

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  1. POController AJAX method to return AJAX ActionLink
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    <p>I am fairly new to MVC and just trying to achieve something which I think shouldn't be too complicated to achieve. Just want to know what the best approach for that is. I have an Event-RSVP application (NerdDinner kind) where you go to view details of the event and then click on an AJAX link that will RSVP you for the event.</p> <pre><code> &lt;% if (Model.HasRSVP(Context.User.Identity.Name)) { %&gt; &lt;p&gt; You are registered for this event!&amp;nbsp; &lt;%: Ajax.ActionLink("Click here if you can't make it!", "CancelRegistration", "RSVP", new { id = Model.RSVPs.FirstOrDefault(r =&gt; r.AttendeeName.ToLower() == User.Identity.Name.ToLower()).RSVPID }, new AjaxOptions { UpdateTargetId = "QuickRegister"}) %&gt; &lt;/p&gt; &lt;% } else { %&gt; &lt;p&gt; &lt;%: Ajax.ActionLink("RSVP for this event", "Register", "RSVP", new { id=Model.EventID }, new AjaxOptions { UpdateTargetId="QuickRegister" }) %&gt; &lt;/p&gt; &lt;% } %&gt; </code></pre> <p>Now corresponding to these two links, my functions in RSVP Controller look like these.</p> <pre><code>[Authorize, HttpPost] public ActionResult Register(int id) { Event event = eventRepository.GetEvent(id); if (event == null) return Content("Event not found"); if (!event.IsUserRegistered(User.Identity.Name)) { RSVP rsvp = new RSVP(); rsvp.AttendeeName = User.Identity.Name; event.RSVPs.Add(rsvp); eventRepository.Save(); } return Content("Thanks, you are registered."); } [Authorize, HttpPost] public ActionResult CancelRegistration(int id) { RSVP rsvp = eventRepository.GetRSVP(id); if (rsvp == null) return Content("RSVP not found"); if (rsvp.Event.IsUserRegistered(User.Identity.Name)) { eventRepository.DeleteRSVP(rsvp); eventRepository.Save(); } return Content("Sorry, we won't be seeing you there!"); } </code></pre> <p>Both of these seem to work without any issues. Now I want to make it a little fancier by doing either of these two:</p> <p>1) Return an AJAX link from controller so that when you register, you get cancel registration link shown to you without page refresh.</p> <p>2) Somehow make the view rendering refreshed when the controller method has finished executing so the first code block in my question gets executed after the click of any of the AJAX links. So clicking on register will register you and show you cancel link and clicking on cancel will cancel your registration and show you register link.</p> <p>Any help would be greatly appreciated. Thanks.</p>
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    1. USHiral Desai
    1. USHiral Desai
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      1. POController AJAX method to return AJAX ActionLink
      1. USKevin L.
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    1. COAfter the confusion in the comments below, here is some more explanation. What I want to be able to do is have 1) you are not subscribed (text) & click to rsvp (link) 2) you are subscribed (text) & click to cancel (link) displayed alternatively based on the user's current RSVP status. There is no specific requirement from client to do this, this is a part of my learning ASP .Net MVC and I just want to understand what options I have. From your comments below, it looks like jquery $.post() is the way to go. So I will now further investigate and see if I have any issues.
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      1. POController AJAX method to return AJAX ActionLink
      1. USHiral Desai
 

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