I have one method which I use in some place. Now I make RedirectToActio.... and back me to the concrete page. Is possible to make, it back to previusly page?
You could use the Referer HTTP header but it's not very reliable. A better way is to pass the url you want to redirect to the controller action (it's the way the POST LogOn method on the AccountController is implemented when you create a new ASP.NET MVC 3 application using the built in wizard. Take a look at it):
public ActionResult Foo(string returnUrl)
{
...
return Redirect(returnUrl);
}
Then when you call this action you pass the url of the current page. For example you could generate the following anchor:
#Html.ActionLink(
"do some processing and redirect back here",
"foo",
new { returnurl = Request.Url.AbsoluteUri }
)
Related
I'm using orchardcms 1.9 (no tag created jet). I am writing a custom module that implements its own controller that calles a service wich check some information and based on the service response I either redirect or let the user stay on the page.
The module is on the default layer in other words it is on everypage. So when user tries to log in or register this module checks information normally.
This is my route:
new RouteDescriptor {
Priority = -1,
Route = new Route(
"{*path}", // this is the name of the page url
new RouteValueDictionary {
{"area", "modulename"}, // this is the name of your module
{"controller", "controllername"},
{"action", "Redirect"}
},
new RouteValueDictionary(),
new RouteValueDictionary {
{"area", "modulename"} // this is the name of your module
},
new MvcRouteHandler())
and this is my controller:
public ActionResult Redirect()
{
String response = _authService.VerifyRegistration(_orchardServices.WorkContext.CurrentUser);
if (response.Equals("2"))
{
Response.Redirect("~/Registration");
}
else if (response.Equals("3"))
{
Response.Redirect("~/Users/Account/LogOn");
}
return View();
}
What happens is that when I go to registration or login controller triggers, checks the infromation, says no redirect needed then returns view. But because the view is empty my page is blank instead of its default login/registration form.
How can I solve this? Am I making a mistake in routing that I somehow override the default view (I tried different priorities but same response).
Your route overrides all routes ({*path}. So when you redirect, you redirect to....your redirector I guess. Therefore the view you are rendering is the one for your controller, not the page you were after.
Whatever the logic flaw - this is not a good way to globally control authorization type scenarios on your site. If you meant to have a single page that people might go to (e.g. http://www.mysite/welcome) then your problem is that your route is too global. However, if, as your code suggests that you want to create a "all pages" check to see if you should go to login or register, then you should implement an authorization filter. An example of an authorization filter (for a slightly different purpose) can be found at https://stackoverflow.com/a/30377097/1638254 . You are looking to fill in the OnAuthorization method with suitable code to redirect the user (or let them through
I have my site like http://mysite.com/ and on the index page i have search box and for the result i am using jqgrid. When user click row in the jqgrid row I am taking data from cells and do ajax call to server and fetch json data and once data arrived I hide the search box and jqgrid and show another div which is I kept for result. In short, user will be on the same page just div's hide/show.
Now I have seen history api and used pushState and popstate so my url becomes in the addressbar like http://mysite.com/controller/action/para1/para2 (here para1 and para2 are the parameters i am passing to action). Everything is ok so far.
Now the problem is if I copy this URL "http://mysite.com/controller/action/para1/para2" and if I open this with let's say different browser and hit enter it display just json data. So, I am confused that how to handle when user directly use that url in controller.
I was thinking to check in the controller action if the request is AJAX then return json data otherwise full page, is that right approach? OR something on the client side we have so that it load the same way as earlier.
Thanks
if I copy this URL "http://mysite.com/controller/action/para1/para2" and if I open this with let's say different browser and hit enter it display just json data.
it only display json data because its ajax call only so how to deal with that so that it also display the same page even user directly access the url.
I think what you're looking for is Request.IsAjaxRequest():
public class FooController : Controller {
public ActionResult GetFoo(int id) {
var model = _fooService.Get(id);
if (Request.IsAjaxRequest())
return PartialView("_Foo", model);
return View("Foo", model);
}
}
Note: It's recommended to use WebAPI controllers to handle only json data. So if the user got there by typing the url the mvc controller will handle it and if you need to get the json data for that view you could call the webapi controller.
Use a separate controller or action method for AJAX and for Views. The View controller should match the URL. The Ajax controller should be the less "pretty" URL since it's behind the scenes.
You need to set up a routing definition in global.asax (MVC 3) or App_Start/RouteConfig.cs (MVC 4) to handle the parameters if you haven't already done that.
routes.MapRoute(
"MyRoute",
"MyUrlController/{action}/{para1}/{para2}",
new
{
action = "Index",
para1 = UrlParameter.Optional,
para2 = UrlParameter.Optional
}
);
Then in the View controller:
public ActionResult Index(string para1 = "Default Value", string para2 = "Default Value")
{
// ...Handle parameters...
return View("_MyView", viewModel);
}
Returning a View object type is the key. The History API URL doesn't get it's data from the same AJAX source controller which returns a PartialViewResult.
I have a controller with an Index method that has several optional parameters for filtering results that are returned to the view.
public ActionResult Index(string searchString, string location, string status) {
...
product = repository.GetProducts(string searchString, string location, string status);
return View(product);
}
I would like to implement the PRG Pattern like below but I'm not sure how to go about it.
[HttpPost]
public ActionResult Index(ViewModel model) {
...
if (ModelState.IsValid) {
product = repository.GetProducts(model);
return RedirectToAction(); // Not sure how to handle the redirect
}
return View(model);
}
My understanding is that you should not use this pattern if:
You do not need to use this pattern unless you have actually stored some data (I'm not)
You would not use this pattern to avoid the "Are you sure you want to resubmit" message from IE when refreshing the page (guilty)
Should I be trying to use this pattern? If so, how would I go about this?
Thanks!
PRG Stands for Post-Redirect-Get. that means when you post some data to the server back, you should redirect to a GET Action.
Why do we need to do this ?
Imagine you have Form where you enter the customer registration information and clicking on submit where it posts to an HttpPost action method. You are reading the data from the Form and Saving it to a database and you are not doing the redirect. Instead you are staying on the same page. Now if you refresh your browser ( just press F5 button) The browser will again do a similar form posting and your HttpPost Action method will again do the same thing. ie; It will save the same form data again. This is a problem. To avoid this problem, We use PRG pattern.
In PRG, You click on submit and The HttpPost Action method will save your data (or whatever it has to do) and Then do a Redirect to a Get Request. So the browser will send a Get Request to that Action
RedirectToAction method returns an HTTP 302 response to the browser, which causes the browser to make a GET request to the specified action.
[HttpPost]
public ActionResult SaveCustemer(string name,string age)
{
//Save the customer here
return RedirectToAction("CustomerList");
}
The above code will save data and the redirect to the Customer List action method. So your browser url will be now http://yourdomain/yourcontroller/CustomerList. Now if you refresh the browser. IT will not save the duplicate data. it will simply load the CustomerList page.
In your search Action method, You dont need to do a Redirect to a Get Action. You have the search results in the products variable. Just Pass that to the required view to show the results. You dont need to worry about duplicate form posting . So you are good with that.
[HttpPost]
public ActionResult Index(ViewModel model) {
if (ModelState.IsValid) {
var products = repository.GetProducts(model);
return View(products)
}
return View(model);
}
A redirect is just an ActionResult that is another action. So if you had an action called SearchResults you would simply say
return RedirectToAction("SearchResults");
If the action is in another controller...
return RedirectToAction("SearchResults", "ControllerName");
With parameter...
return RedirectToAction("SearchResults", "ControllerName", new { parameterName = model.PropertyName });
Update
It occurred to me that you might also want the option to send a complex object to the next action, in which case you have limited options, TempData is the preferred method
Using your method
[HttpPost]
public ActionResult Index(ViewModel model) {
...
if (ModelState.IsValid) {
product = repository.GetProducts(model);
TempData["Product"] = product;
return RedirectToAction("NextAction");
}
return View(model);
}
public ActionResult NextAction() {
var model = new Product();
if(TempData["Product"] != null)
model = (Product)TempData["Product"];
Return View(model);
}
I got an action List
//[HttpGet] (will come back to that!)
public ViewResult List(int page = 1)
{
//blah blah blah
return View(viewModel);
}
In its view we render action:
#{
Html.RenderAction("UpdateSearch");
}
Action definitions:
[ChildActionOnly]
[HttpGet]
public PartialViewResult UpdateSearch()
{
// do something and display a form in view
return PartialView(so);
}
[HttpPost]
public RedirectToRouteResult UpdateSearch(Options searchOptions)
{
// do something and redirect to List
return RedirectToAction("List");
}
and I'm getting: Child actions are not allowed to perform redirect actions exception every time someone submits the form. I'm new to MVC3, but it looks like the redirection is also a POST, because if [HttpGet] above List method is uncommented "the resource cannot be found" happens.
How do I change Http method on redirection or am I doing something wrong? I did try to Bing it, but no success.
The redirect info is stored in response header. However, the response is already being sent when child action is run so headers can't be written.
In short, there's no way of performing a redirect from child action other than through the use of javascript on client side.
I have this url in my login view: http://localhost:5550/login?ReturnUrl=/forum/456&theme=1
I get the right url value when I am in the login page.
As you can see I have 2 query string parameters: ReturnUrl and theme
So far good.
Now the login page posts a form to a controller action.
All I need is to read the values of these 2 query string params.
I just can't make it work.
This is my login page view:
#using (Html.BeginForm("try", "login"))
{
//set text boxes and button so user can try login
}
This is my controller where I need those 2 values:
[HttpPost]
public ActionResult Try(LoginModel model, string ReturnUrl, string theme)
{
//read all query string param values...but how?
//I am not getting anything in string ReturnUrl, string theme. They are null
}
Other part of the question:
I can debug other controller. But not this controller.
Is this because I am posting a form using BeginForm?
Doesn't make sense. But the breakpoint never hits even though I get error on browser.
Normally you shouldn't be reading from ReturnUrl. The flow works like this:
Request to controller action which requires authentication using the [Authorize] attribute
ASP.NET MVC adds the ReturnUrl and redirects to /Account/LogOn, automatically encoding and appending the ReturnUrl parameter
The Account/LogOn POST controller action, after authenticating the login information, redirects to the URL in the ReturnUrl.
I wrote about that in gory detail in the following posts:
Looking at how the ASP.NET MVC Authorize interacts with ASP.NET Forms Authorization
Preventing Open Redirection Attacks in ASP.NET MVC
The second post indicates one good reason why need to be careful with ReturnUrl - users can tamper with them.
In the example you showed above, I'd expect that, after authorization, the user would be redirected to the Forum / Index action, which would then be reading the values. If you are creating the ReturnUrl, you should be URL Encoding the second &.
Not sure on the exact reason the values don't get bound, but the easy workaround is to add those properties to your login model and add hidden fields on the form.
Try changing the decoration:
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Try(LoginModel model, string ReturnUrl, string theme)
{
//read all query string param values...but how?
//I am not getting anything in string ReturnUrl, string theme. They are null
}