Save State of Search - c#

I have a web page that builds a table of search results. the user can then edit those items. When the user is returned to the page it returns to it's unsearched state (as it is designed).
I want to have them return to the query. how can i save that page state?
#model List<MyNamespace.Models.MyModel>
#{
ViewBag.Title = "Index";
}
<h2>
Index</h2>
#using (Ajax.BeginForm("Search", "MyController",
new AjaxOptions
{
HttpMethod = "GET",
InsertionMode = InsertionMode.Replace,
UpdateTargetId = "searchResults"
}))
{
<input type="text" name="q" data-autocomplete="#Url.Action("SearchProviders", "MyController")" />
<input type="submit" value="Search" />
}
<div id="searchResults" />
Controller Action:
public PartialViewResult Search(string q)
{
var jobs = MyRepository.GetJobsByQuery(String.Format("DataProvider='{0}'", q));
return PartialView("_MyPartialRowset", jobs);
}

I'd suggest having your search form submit using HTTP GET; the search parameters/terms could be included in the query string of the search results page, like this:
/Search?q=cthulhu
Then, make all of your edit links so that they have a returnUrl in the query string:
/Things/235/Edit?returnUrl=%2FSearch%3Fq%3Dcthulhu
When the save or cancel completes, return to the page specified in returnUrl. That way, no matter where the edit was opened from, you can use the same logic to return to the previous page.
As part of this, I'd also make the search results page is not cached.
Update:
If your search is done through AJAX, then the easiest way for you to preserve the search parameters to auto-populate when the user comes back is to place the search parameters in a cookie.

Related

MVC, how to post data to controller and redirect to aspx page

I have an MVC view where user can set a flag and post data to controller (post because I want to hidden query string)
After the controller have done his job I want to redirect to website home page that is an aspx page (my site is mixed aspx and MVC)
Is there a way to do that?
This is my view
#model MessaggiVM
<form role="form" class="form-inline" method="post" action="Messaggi/VaiAllaHome">
<button id="btnHome">Vai alla pagina iniziale</button>
<div class="form-group">
<label for="nascondi">hiding</label>
<input id="nascondi" type="checkbox" name="nascondi" value="true" />
</div>
<input type="hidden" name="elencoPost" value="#Model.Posts" />
#*#Html.ActionLink("Messaggi", "VaiAllaHome", new { posts = Model.Posts} )*#
</form>
And this the controller
[HttpPost]
public RedirectResult VaiAllaHome(bool? nascondi = false, IEnumerable<Messaggio> elencoPost = null)
{
// do something
return Redirect(Url.Content("~/"));
}
When I run this code controller action is executed without error but redirect is not done and browser remain on the view
Other problem is that elencoPost parameter is empty in the action but I'm investigating it
EDIT
Honestly I'm thinking to post data on input change and switch button for a simply link
EDIT 2:
found the reason: in default.aspx i have a auto-redirect to Message page :(
Try
return Redirect("~/home.aspx");
or
return Redirect(Url.Content("~/home.aspx")
You should be able to use Redirect with a relative url:
[HttpPost]
public RedirectResult VaiAllaHome(bool? nascondi = false, IEnumerable<Messaggio> elencoPost = null)
{
// do something
return Redirect("/home.aspx");
}
Try using a #Url.Content on your form tag
<form action="#Url.Content("~/Messaggi/VaiAllaHome/")">
Then in your Controller
[HttpPost]
public RedirectResult VaiAllaHome(bool? nascondi = false, IEnumerable<Messaggio> elencoPost = null)
{
// do something
return View(Url.Content("~/"));
//return RedirectToAction("Action", "Controller", new { routeParameter = value } /*e.g. "id = 1"*/);
}

Hidden input has a value but it's always null in controller action

Working on mvc5 app. In my ajax form I have alot of fields, including one hidden input...
<input id="currentView" name="currentView"
value="calendar" type="hidden" />
Whenever I post to my action, currentView is null, unless I change type to "text". Then I get the value fine.
The beginning of the action is defined as...
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult GetEvents(string userName, string currentView,
string theStatus)
{
The other params are in the Model and come across fine. Is this the issue? Does currentView have to be in the Model for the hidden field to work? I guess I'm just confused as to why when I change the type to text it works. My understanding was that as long as I have a name defined it's accessible in the request vars.
Thanks!
**** UPDATE: Here's the top portion of my Ajax form *****
#using (Ajax.BeginForm(
new AjaxOptions
{
HttpMethod = "POST",
Url = "/Scheduler/GetEvents",
UpdateTargetId = "mainTable"
}))
{
#Html.AntiForgeryToken()
#Html.ValidationSummary(true)
<input id="currentView" name="currentView"
value="calendar" type="text"
style="display: none;" />
As you can see I hacked it by using display: none. When I change type to "hidden" it doesn't work.
instead of sending value with hidden field you can try sending it in route values like this
#using (Ajax.BeginForm("GetEvents", "Scheduler", new { currentView ="calander"},
new AjaxOptions
{
HttpMethod = "POST",
UpdateTargetId = "mainTable"
}))
{

redirect to different view after loading partial view in Main view

I dint find answers to this and tried several ways. any help would be appreciated thanks !!
I have view which updates the page without reloading on each click using ajax scripts. Below is the code. but after entire partial views are generated, I want user to redirect complete different view on clicking a link which is not associated to controller user is in now.
my View
#model IMONLP.Models.Search
#{
ViewBag.Title = "Search";
}
<script src="~/Scripts/jquery-1.8.2.min.js"></script>
<script src="~/Scripts/jquery.unobtrusive-ajax.js"></script>
#using (Ajax.BeginForm("Search", new AjaxOptions() { UpdateTargetId = "results"
}))
{
<br />
#Html.TextBoxFor(m => m.search_text, new { style = "width: 200px;" })
<input type="submit" value="search" />
}
#Ajax.ActionLink("Try Demo", "PLNHK", "PLNHK", new AjaxOptions { })
// this ajax link should redirect to different view,
<div id="results">
#if (!String.IsNullOrEmpty(#Model.search_text))
{
Html.RenderPartial("Searchprocess", Model);
}
</div>
My controller:
public ActionResult Search(Search s)
{
//do something
return PartialView("Searchprocess", s);
}
public ActionResult Selected(Search s)
{
//DO something
return PartialView("Selected", s);
}
The above "TryDEMO" "PLNHK" ajax action link will have to be redirected to new controller and new action and return view thats returned by that action. everytime I click on that, I found it moving to that controller and then to corresponding view but again its getting back to old page. I used #html.actionlink instead of Ajax, but now I get this error
The "RenderBody" method has not been called for layout page "~/Views/PLNHK/PLNHK.cshtml".
Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.
EDIT : I did create PLNHK.cshtml. while I'm trying to debug this, the control goes to PLNHK controller then to PLNHK view(PLNHK.cshtml) parses each and every step in that page, but finally I would get the output to be the older page. I was thinking may be the Ajax scripts on before page is the reason.

Controller methods when submitting an AJAX request

I have an MVC project that has a page with several forms on it. Most of the content on the page is rendered based on an initial form that a user submits. When a user updates information on that page I don't want the entire page to refresh I just need it to submit the form and stay on the page. I've tried to setup the form to submit with AJAX, but I don't know what to make the controller method return to accomplish this.
Form:
<div id="HeatNameDiv" title="Change Heat Name">
#using (Ajax.BeginForm("ChangeHeatName", "Home", new AjaxOptions(){UpdateTargetId = "HeatNameDiv"}))
{
<section>
Heat Name:<input type="text" name="heatName" value="#Html.ValueFor(x => x.heatname)" style ="width:100px"/>
Change to:<input type="text" name="updatedHeat" value="" style="width: 100px" />
<input type="submit" name="ChangeHeatName" value="Change" />
</section>
}
Current Controller:
public ActionResult ChangeHeatName(string heatName, string updatedHeat)
{
string user = User.Identity.Name;
HomeModel H = new HomeModel();
H.ChangeHeatName(heatName, updatedHeat, user);
return Content("Index");
}
It depends on what you want refreshed. Ajax.BeginForm expects an HTML fragment. So you need a partial that represents the heatNameDiv that you want to replace after submit:
public ActionResult ChangeHeatName(string heatName, string updatedHeat)
{
string user = User.Identity.Name;
HomeModel H = new HomeModel();
H.ChangeHeatName(heatName, updatedHeat, user);
return PartialView("NameOfPartialView", H);
}
I agree with Jeremy because Ajax.BeginForm is less flexible. I have tried hard to use it in the past, but the fact that it replaces the target element, instead of the innerHtml of the target, makes it difficult for many scenarios.
With $.ajax you can set url: '#(Url.Action("MyActionReturningAPartialView"))' and in the .success callback function(response) { $('#heatNameDiv').innerHtml(response); }
The action you call still returns a PartialView.

New to ASP.NET MVC, having trouble with render action containing a form

I am used to ASP.NET web forms, and am slowly learning ASP.NET MVC.
My website has a little login form on the homepage. My natural thought is that this login form may be useful in other places, and it is not the primary action of the homepage, so I want to separate it off into a partial view. And because it is related to accounts, I want the login in my AccountController not my HomepageController.
Login form is a pretty basic strongly typed partial view:
#model Models.Account.AccountLogin
<h2>Login Form</h2>
#using (Html.BeginForm("_Login", "Account")) {
#Html.ValidationSummary()
<div>
<span>Email address:</span>
#Html.TextBoxFor(x => x.EmailAddress)
</div>
<div>
<span>Password:</span>
#Html.PasswordFor(x => x.Password)
</div>
<div>
<span>Remember me?</span>
#Html.CheckBoxFor(x => x.RememberMe)
</div>
<input type="submit" value="Log In" />
}
</div>
On the homepage, I have this:
#Html.Action("_Login", "Account")
Finally, in the account controller, this:
[HttpGet]
public PartialViewResult _Login()
{
return PartialView();
}
[HttpPost]
public PartialViewResult _Login(AccountLogin loginDetails)
{
// Do something with this
return PartialView();
}
Now when I load my homepage, it looks OK and contains the form. When I click the Log In button, it takes me to myurl/Account/_Login, which contains the form, but not within the _Layout master page, just basic plain HTML and it doesn't do anything at all when I click Log In.
I am pretty sure that I have just missed some fundamental aspect of what I am supposed to be doing here, can someone please point me in the right direction?
It's because you're returning a partial view, which strips away the master page and just returns the main content. Often actions starting with an underscore are used for partials (e.g. ajaxing in a bit of a page, but not the full page). It sounds like you want a full action, and not a partial, so
[HttpPost]
public ActionResult Login(AccountLogin loginDetails)
{
// Do something with this
return View();
}
The issue here is that you are doing a fullpage postback.
You have two options, really.
Firstly, you can use a full page postback, and then call Html.Partial to display your Partial.
Something like
[HttpGet]
public ActionResult Login()
{
return View();//this typically returns the view found at Account/Index.cshtml
}
And then create a View along the lines of
#{
ViewBag.Title = "Index";
}
<h2>Title</h2>
#Html.Partial("PartialNameGoesHere")
Your partial is then rendered where indicated, but this is done when the page loads (if you look at the generated HTML, it appears exactly as though you had written it inline).
Or you can use jQuery/AJAX to load the partial on demand. Let's say you have a homepage of some description
public ActionResult Home()
{
return View();
}
public ActionResult Login()
{
return PartialView("_Login");
}
Create the view
#{
ViewBag.Title = "Index";
}
<h2>Home</h2>
<div>
<p>Hey welcome to my pretty awesome page!</p>
</div>
Show me the login!
<div id="container">
</div>
You can then load the PartialView into the container div whenever you need it, using some JS.
$(function() {
$('.my-login-link').click(function() {
$.ajax({
url: 'account/login',
success: function(data) {
$('#container').html(data);
}
});
return false;//cancel default action
});
});
In that instance, the page loads as normal without the login part. When the user clicks the link, the Login on the controller Account is called using AJAX/jQuery. This returns the HTML of the PartialView, which you can then add to the page using jQuery in the Success handler.

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