passing model and parameter with RedirectToAction - asp.net-mvc

I want to send a string and a model (object) to another action.
var hSM = new HotelSearchModel();
hSM.CityID = CityID;
hSM.StartAt = StartAt;
hSM.EndAt = EndAt;
hSM.AdultCount = AdultCount;
hSM.ChildCount = ChildCount;
return RedirectToAction("Search", new { culture = culture, hotelSearchModel = hSM });
When I use the new keyword it sends null object, although I set the objects hSm property.
This is my Search action :
public ActionResult Search(string culture, HotelSearchModel hotelSearchModel)
{
// ...
}

You can't send data with a RedirectAction.
That's because you're doing a 301 redirection and that goes back to the client.
What you need to is save it in TempData:
var hSM = new HotelSearchModel();
hSM.CityID = CityID;
hSM.StartAt = StartAt;
hSM.EndAt = EndAt;
hSM.AdultCount = AdultCount;
hSM.ChildCount=ChildCount;
TempData["myObj"] = new { culture = culture,hotelSearchModel = hSM };
return RedirectToAction("Search");
After that you can retrieve again from the TempData:
public ActionResult Search(string culture, HotelSearchModel hotelSearchModel)
{
var obj = TempData["myObj"];
hotelSearchModel = obj.hotelSearchModel;
culture = obj.culture;
}

Related

How to save data in multiple tables using Entity Framework?

How to save mixed data in multiple tables if is checked checkbox:
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create([Bind(Include = "rID,AgentID,karta_br,Datum,patnikID,stanicaOD,stanicaDO,cena,povratna")] tbl_rezervacii tbl_rezervacii)
{
if (ModelState.IsValid)
{
if (tbl_rezervacii.povratna != true)
{
db.tbl_rezervacii.Add(tbl_rezervacii);
db.SaveChanges();
}
else
{
tbl_rezervacii rezervacii = new tbl_rezervacii()
{
???????????????????????
};
db.tbl_rezervacii.Add(rezervacii);
db.SaveChanges();
tbl_povratni povratni = new tbl_povratni()
{
???????????????????????
};
db.tbl_povratni.Add(povratni);
db.SaveChanges();
}
This is code in the controller, and I need to mix data from two forms, and save to two tables, I need something like this, and now my problem is just in else section of implementation.
I make application for Bus Ticket system, and i need this if is checked return way checkbox to add: rID (related with first table tbl_rezervacii), date of returning and relation of returning, include same agent id, price, etc. data which is saved in first tbl_rezervacii table.
MODIFIED CONTROLLER CODE:
public ActionResult Create([Bind(Include = "rID,AgentID,karta_br,Datum,patnikID,stanicaOD,stanicaDO,cena,povratna")] tbl_rezervacii tbl_rezervacii )
{
if (ModelState.IsValid)
{
if (tbl_rezervacii.povratna != true)
{
db.tbl_rezervacii.Add(tbl_rezervacii);
db.SaveChanges();
}
else
{
tbl_rezervacii rezervacii = new tbl_rezervacii()
{
AgentID = tbl_rezervacii.AgentID,
karta_br = tbl_rezervacii.karta_br,
Datum = tbl_rezervacii.Datum,
patnikID = tbl_rezervacii.patnikID,
stanicaOD = tbl_rezervacii.stanicaOD,
stanicaDO = tbl_rezervacii.stanicaDO,
cena = tbl_rezervacii.cena,
povratna = tbl_rezervacii.povratna
};
db.tbl_rezervacii.Add(rezervacii);
//db.SaveChanges();
var rows = db.SaveChanges();
tbl_povratni povratna = new tbl_povratni()
{
rezID = rezervacii.rID,
AgentID = rezervacii.AgentID,
karta_br = rezervacii.karta_br,
DatumP = **tbl_povratni.DatumP**,
patnikID = rezervacii.patnikID,
stanicaPOD = **tbl_povratni.stanicaPOD**,
stanicaPDO = **tbl_povratni.stanicaPDO**,
};
db.tbl_povratni.Add(povratna);
db.SaveChanges();
}
ViewBag.AgentID = new SelectList(db.tbl_agenti, "aID", "agent_ime", tbl_rezervacii.AgentID);
ViewBag.patnikID = new SelectList(db.tbl_patnici, "pID", "ime", tbl_rezervacii.patnikID);
ViewBag.stanicaOD = new SelectList(db.tbl_stanici, "sID", "stanica", tbl_rezervacii.stanicaOD);
ViewBag.stanicaDO = new SelectList(db.tbl_stanici, "sID", "stanica", tbl_rezervacii.stanicaDO);
ViewBag.stanicaPOD = new SelectList(db.tbl_stanici, "sID", "stanica", tbl_rezervacii.tbl_povratni.stanicaPOD);
ViewBag.stanicaPDO = new SelectList(db.tbl_stanici, "sID", "stanica", tbl_rezervacii.tbl_povratni.stanicaPDO);
return View(tbl_rezervacii);
}
return RedirectToAction("Index");
}
How to take data from secondary form and save together in second table?
So, if checkbox is checked, you want to save data into two tables and use primary key of first table (rID) in second table? If rID is auto increment, It will be updated by EF with the value assigned by the database.
tbl_rezervacii rezervacii = new tbl_rezervacii()
{
AgentID = tbl_rezervacii.AgendID,
karta_br = tbl_rezervacii.karta_br
// and so on...
};
db.tbl_rezervacii.Add(rezervacii);
var rows = db.SaveChanges(); // optional, rows will be > 0 if saved successfully.
tbl_povratni povratni = new tbl_povratni()
{
// if rID is auto increment
rID = rezervacii.rID,
// and so on...
};
db.tbl_povratni.Add(povratni);
db.SaveChanges();

Xamarin Android, get contact mobile number by using CursorLoader with selection and selection args

I'm trying to get contact details of a contact that the user picks from the contacts list in Android using Intent as the following code:
Intent Intent = new Intent(Intent.ActionPick, ContactsContract.Contacts.ContentUri);
Intent.SetType(ContactsContract.Contacts.ContentType);
StartActivityForResult(Intent, 3);
Now on the Intent results I run the following code to get specific contact information:
public override void OnActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == 3 && resultCode == -1 && data != null) //result code -1 means OK 0 Means cancelled Result.Ok
{
var ContactData = data.Data;
string ID = "";
string name = "";
string address = "";
byte[] picture = new byte[0];
List<string> numbers = new List<string>();
List<string> emails = new List<string>();
string mobile = "";
string email = "";
string selectionString = "id = ?";
string[] columnsNames = new string[] {
ContactsContract.Contacts.InterfaceConsts.Id,
ContactsContract.Contacts.InterfaceConsts.DisplayName,
ContactsContract.Contacts.InterfaceConsts.PhotoUri
};
var loader = new CursorLoader(Statics.mainActivity, ContactData, null, null, null, null);
var cursor = (ICursor)loader.LoadInBackground();
if (cursor.MoveToFirst())
{
ID = cursor.GetString(cursor.GetColumnIndex(columnsNames[0]));
name = cursor.GetString(cursor.GetColumnIndex(columnsNames[1]));
picture = cursor.GetBlob(cursor.GetColumnIndex(columnsNames[2]));
}
//Store Contact ID
string[] selectionStringArgs = new string[] { ID };
//Phone Numbers
string[] columnsNames2 = new string[] {
ContactsContract.CommonDataKinds.Phone.Number
};
var loader2 = new CursorLoader(Statics.mainActivity, ContactsContract.CommonDataKinds.Phone.ContentUri, columnsNames2, selectionString, selectionStringArgs, null);
var cursor2 = (ICursor)loader2.LoadInBackground();
while (cursor2.MoveToNext())
{
numbers.Add(cursor2.GetString(cursor2.GetColumnIndex(columnsNames2[0])));
}
//Email Address
string[] columnsNames3 = new string[] {
ContactsContract.CommonDataKinds.Email.Address
};
var loader3 = new CursorLoader(Statics.mainActivity, ContactsContract.CommonDataKinds.Email.ContentUri, columnsNames3, selectionString, selectionStringArgs, null);
var cursor3 = (ICursor)loader3.LoadInBackground();
while (cursor3.MoveToNext())
{
emails.Add(cursor3.GetString(cursor3.GetColumnIndex(columnsNames3[0])));
}
int TempRecepitntID = 0;
EmployeesViewModel tempRecipent = new EmployeesViewModel();
TempRecepitntID = Statics.mainActivity.currentViewModel.SelectedChat.ReceiverEmployee;
foreach (EmployeesViewModel evm in Statics.mainActivity.currentViewModel.Employees)
{
if (evm.ID == TempRecepitntID)
tempRecipent = evm;
}
new Android.Support.V7.App.AlertDialog.Builder(Statics.mainActivity)
.SetPositiveButton("Yes", (sender1, args) =>
{
Statics.mainActivity.currentViewModel.AddMessage(picture, tempRecipent, Statics.mainActivity.currentViewModel.SelectedChat.ID, "contact", 0, "", name, numbers[0], mobile, email, address);
})
.SetNegativeButton("No", (sender1, args) =>
{
// cancel
})
.SetMessage("Are you shure you want to send?")
.SetTitle("System Message")
.Show();
}
}
The problem is I want to retrieve only the information of the contact that the user selected but what I get is all other contacts data is retrieved so I tried to use the selection and selectionargs parameters of CursorLoader by setting string selectionString = "id = ?"; and selectionArgs to string[] selectionStringArgs = new string[] { ID }; the ID value is retrieved from the following code :
if (cursor.MoveToFirst())
{
ID = cursor.GetString(cursor.GetColumnIndex(columnsNames[0]));
name = cursor.GetString(cursor.GetColumnIndex(columnsNames[1]));
picture = cursor.GetBlob(cursor.GetColumnIndex(columnsNames[2]));
}
//Store Contact ID
string[] selectionStringArgs = new string[] { ID };
//Phone Numbers
string[] columnsNames2 = new string[] {
ContactsContract.CommonDataKinds.Phone.Number
};
But now it returns 0 results, I couldn't find anything on the internet that applies to Xamarin android, Please help.
Thanks,
Finally I found the solution, I used the following string in the selection parameter of the cursorloader method:
string selectionString = ContactsContract.CommonDataKinds.Phone.InterfaceConsts.ContactId + "=" + ID;
and now only the selected contact numbers are retrieved.
I hope this will help someone else.
In additional information of #TMSL, I add the code afer this bloque
if (cursor.MoveToFirst())
{
ID = cursor.GetString(cursor.GetColumnIndex(columnsNames[0]));
name = cursor.GetString(cursor.GetColumnIndex(columnsNames[1]));
picture = cursor.GetBlob(cursor.GetColumnIndex(columnsNames[2]));
}
Here
selectionString = ContactsContract.CommonDataKinds.Phone.InterfaceConsts.ContactId + "=" + ID;
Then I changed the parameters used in the definition of variable Loader2, converting selectionStringArgs in null.
var loader2 = new CursorLoader(this.Activity, ContactsContract.CommonDataKinds.Phone.ContentUri, columnsNames2, selectionString, null,null);
var cursor2 = (ICursor)loader2.LoadInBackground();
I found this documentation from xamarin guides
Uri – The fully qualified name of the ContentProvider.
Projection – Specification of which columns to select for the cursor.
Selection – Similar to a SQL WHERE clause.
SelectionArgs – Parameters to be substituted in the Selection.
SortOrder – Columns to sort by.
So, the variable selectionStringArgs used in the code from #TMSAL cannot use a value like "contact_id = 2700", because the parameter of CursorLoader SelectionArgs is not a filter but not "Parameters to be substituted in the Selection"
I hope this will help someone else too.

Using Postal and Hangfire in Subsite

I have been trying to use Postal on my MVC5 site. When I host my webpage a subsite ie, http://localhost/Subsite I am receiving the error
The virtual path '/' maps to another application, which is not allowed
I have debugged it down to when the ControllerContext is being created the HttpContext isn't getting set correctly. Since I'm running Postal from Hangfire the HttpContext.Current is always null. Postal creates the ContollerContext using the code below.
ControllerContext CreateControllerContext()
{
// A dummy HttpContextBase that is enough to allow the view to be rendered.
var httpContext = new HttpContextWrapper(
new HttpContext(
new HttpRequest("", UrlRoot(), ""),
new HttpResponse(TextWriter.Null)
)
);
var routeData = new RouteData();
routeData.Values["controller"] = EmailViewDirectoryName;
var requestContext = new RequestContext(httpContext, routeData);
var stubController = new StubController();
var controllerContext = new ControllerContext(requestContext, stubController);
stubController.ControllerContext = controllerContext;
return controllerContext;
}
string UrlRoot()
{
var httpContext = HttpContext.Current;
if (httpContext == null)
{
return "http://localhost";
}
return httpContext.Request.Url.GetLeftPart(UriPartial.Authority) +
httpContext.Request.ApplicationPath;
}
How can I specify the UrlRoot so that instead of pulling the default of localhost to pull it based on my subsite?
I followed the directions here http://docs.hangfire.io/en/latest/tutorials/send-email.html to send my email. The method in the tutorial is below
public static void NotifyNewComment(int commentId)
{
// Prepare Postal classes to work outside of ASP.NET request
var viewsPath = Path.GetFullPath(HostingEnvironment.MapPath(#"~/Views/Emails"));
var engines = new ViewEngineCollection();
engines.Add(new FileSystemRazorViewEngine(viewsPath));
var emailService = new EmailService(engines);
// Get comment and send a notification.
using (var db = new MailerDbContext())
{
var comment = db.Comments.Find(commentId);
var email = new NewCommentEmail
{
To = "yourmail#example.com",
UserName = comment.UserName,
Comment = comment.Text
};
emailService.Send(email);
}
}
I found the issue was that the FileSystemRazorViewEngine was not being used bty postal. To get the this to work I had to make sure that the FileSystemRazorViewEngine was the first engine in the available. I then removed it because I did not want it to be the default engine. Below is my updated method.
public static void NotifyNewComment(int commentId)
{
// Prepare Postal classes to work outside of ASP.NET request
var viewsPath = Path.GetFullPath(HostingEnvironment.MapPath(#"~/Views/Emails"));
var eng = new FileSystemRazorViewEngine(viewsPath));
ViewEngines.Engines.Insert(0, eng);
var emailService = new EmailService(engines);
// Get comment and send a notification.
using (var db = new MailerDbContext())
{
var comment = db.Comments.Find(commentId);
var email = new NewCommentEmail
{
To = "yourmail#example.com",
UserName = comment.UserName,
Comment = comment.Text
};
emailService.Send(email);
ViewEngines.Engines.RemoveAt(0)
}
}
Below is another possible solution that I think is more elegant than above. It also resolves an issue that appears when accessing the MVC application while the background process is being executed.
public static void SendTypedEmailBackground()
{
try
{
var engines = new ViewEngineCollection();
var viewsPath = Path.GetFullPath(HostingEnvironment.MapPath(#"~/Views/Emails"));
var eng = new FileSystemRazorViewEngine(viewsPath);
engines.Add(eng);
var email = new WebApplication1.Controllers.EmailController.TypedEmail();
email.Date = DateTime.UtcNow.ToString();
IEmailService service = new Postal.EmailService(engines);
service.Send(email);
}
catch(Exception ex)
{
throw ex;
}
}

Web API + ODataQueryOptions + $top or $skip is causing a SqlException

This code has been simplified for this example.
The query is actually returned from a service, which is why I would prefer to write the method this way.
[HttpGet]
public PageResult<ExceptionLog> Logging(ODataQueryOptions<ExceptionLog> options)
{
var query = from o in _exceptionLoggingService.entities.ExceptionDatas
select new ExceptionLog {
ExceptionDataId = o.ExceptionDataId,
SiteId = o.SiteId,
ExceptionDateTime = o.ExceptionDateTime,
StatusCode = o.StatusCode,
Url = o.Url,
ExceptionType = o.ExceptionType,
ExceptionMessage = o.ExceptionMessage,
Exception = o.Exception,
RequestData = o.RequestData
};
var results = options.ApplyTo(query) as IEnumerable<ExceptionLog>;
var count = results.LongCount();
return new PageResult<ExceptionLog>(results, Request.GetNextPageLink(), count);
}
The above code errors on "results.LongCount()" with the following Exception:
SqlException: The text, ntext, and image data types cannot be compared or sorted, except when using IS NULL or LIKE operator.
It appears that I'm getting an exception with when trying to page, like this "$top=2". Everything works fine if my querystring is like this "$filter=ExceptionDataId gt 100".
Since ExceptionData (the Entity) matches ExceptionLog (business model) I can do something like this as a workaround:
[HttpGet]
public PageResult<ExceptionLog> Logging(ODataQueryOptions<ExceptionData> options)
{
var query = from o in _exceptionLoggingService.entities.ExceptionDatas
orderby o.ExceptionDateTime descending
select o;
var results = from o in options.ApplyTo(query) as IEnumerable<ExceptionData>
select new ExceptionLog {
ExceptionDataId = o.ExceptionDataId,
SiteId = o.SiteId,
ExceptionDateTime = o.ExceptionDateTime,
StatusCode = o.StatusCode,
Url = o.Url,
ExceptionType = o.ExceptionType,
ExceptionMessage = o.ExceptionMessage,
Exception = o.Exception,
RequestData = o.RequestData
};
return new PageResult<ExceptionLog>(results, Request.GetNextPageLink(), results.LongCount());
}
But this doesn't completely work for me because it's a little hackish and I can't use the service's method which already gives me an IQueryable.
Another thing to note, is if the Logging method is converted to IQueryable, everything works correctly. But I need to return the Count with the query so I have to return a PageResult.
This is the workaround I'm using. I only apply the filter from the ODataQueryOptions and I manually apply the Top and Skip.
First I created some extension methods:
using System;
using System.Collections.Generic;
using System.Linq;
namespace System.Web.Http.OData.Query
{
public static class ODataQuerySettingsExtensions
{
public static IEnumerable<T> ApplyFilter<T>(this IQueryable<T> query, ODataQueryOptions<T> options)
{
if (options.Filter == null)
{
return query;
}
return options.Filter.ApplyTo(query, new ODataQuerySettings()) as IEnumerable<T>;
}
public static IEnumerable<T> ApplyTopAndTake<T>(this IEnumerable<T> query, ODataQueryOptions<T> options)
{
IEnumerable<T> value = query;
if (options.Top != null)
{
value = value.Take(options.Top.Value);
}
if (options.Skip != null)
{
value = value.Skip(options.Skip.Value);
}
return value;
}
}
}
Now my method looks like this:
[HttpGet]
public PageResult<ExceptionLog> Logging(ODataQueryOptions<ExceptionLog> options)
{
// GetLogs returns an IQueryable<ExceptionLog> as seen in Question above.
var query = _exceptionLoggingService.GetLogs()
.ApplyFilter(options);
var count = query.Count();
var results = query.ApplyTopAndTake(options);
return new PageResult<ExceptionLog>(results, Request.GetNextPageLink(), count);
}

Unit testing a controller that depends on a session variable

I have a controller that depends on a Session variable. In order to unit test this controller, I came up with the following solution. It works but I'm wondering if there is a better/cleaner way. Thanks
Controller
public JsonResult UpdateStatus(ImageUpdateStatus imageUpdateStatus, SessionStateItemCollection sessionItems = null)
{
var data = new object();
string status = null;
ImageInfo imageInfo = new ImageInfo();
IImageInfoServices svcImageInfo = new ImageInfoServicesRepository();
imageInfo = svcImageInfo.GetImageByImageId(imageUpdateStatus.ImageId);
IDeviceControlServices svcDevice = new DeviceControlServicesRespository();
IPVSCommandServices svcPVSCmds = new PVSCommandServicesRespository();
if (imageUpdateStatus.Task == "prep")
{
List<UpdateReasonForm> updateReasonForms;
if (sessionItems != null)
{
updateReasonForms = sessionItems["UpdateReasonForms"] as List<UpdateReasonForm>;
}
else
{
updateReasonForms = Session["UpdateReasonForms"] as List<UpdateReasonForm>;
}
foreach (var item in updateReasonForms)
{
if (item.ImageId == imageInfo.ImageId)
{
status = svcPVSCmds.PrepImage(imageInfo, item.NewVersion);
}
}
data = new
{
status
};
}
if (imageUpdateStatus.Task == "boot")
{
status = svcDevice.Boot(imageInfo.ImageId);
data = new
{
status
};
}
return this.Json(data, JsonRequestBehavior.AllowGet);
}
Unit Test
[TestMethod()]
public void UpdateStatusTest()
{
BuildController target = new BuildController(); // TODO: Initialize to an appropriate value
ImageUpdateStatus imageUpdateStatus = new ImageUpdateStatus(); // TODO: Initialize to an appropriate value
imageUpdateStatus.ImageId = 3;
imageUpdateStatus.Task = "prep";
UpdateReasonForm updateReasonForm = new UpdateReasonForm();
updateReasonForm.ImageId = 3;
updateReasonForm.NewVersion = "TestThis";
List<UpdateReasonForm> updateReasonForms = new List<UpdateReasonForm>();
updateReasonForms.Add(updateReasonForm);
var sessionItems = new SessionStateItemCollection();
sessionItems["UpdateReasonForms"] = updateReasonForms;
JsonResult actual;
actual = target.UpdateStatus(imageUpdateStatus, sessionItems);
}
Instead of passing in the session values as a parameter you can mock the session state like here:
How do you mock the session object collection using Moq
You have a dependency on Session. You could move your code into a testable method where you inject the dependency at the method level. It looks like you are on this path I would just abstract the code into its own method allowing you to test the functionality regardless of the whether the data comes from session or not.
public JsonResult UpdateStatusDependencyInjection(ImageUpdateStatus imageUpdateStatus, Dictionary<string, object> sessionValues)
{
var data = new object();
string status = null;
ImageInfo imageInfo = new ImageInfo();
IImageInfoServices svcImageInfo = new ImageInfoServicesRepository();
imageInfo = svcImageInfo.GetImageByImageId(imageUpdateStatus.ImageId);
IDeviceControlServices svcDevice = new DeviceControlServicesRespository();
IPVSCommandServices svcPVSCmds = new PVSCommandServicesRespository();
if (imageUpdateStatus.Task == "prep")
{
List<UpdateReasonForm> updateReasonForms;
if (sessionItems != null)
{
updateReasonForms = sessionItems["UpdateReasonForms"] as List<UpdateReasonForm>;
}
else
{
updateReasonForms = Session["UpdateReasonForms"] as List<UpdateReasonForm>;
}
foreach (var item in updateReasonForms)
{
if (item.ImageId == imageInfo.ImageId)
{
status = svcPVSCmds.PrepImage(imageInfo, item.NewVersion);
}
}
data = new
{
status
};
}
if (imageUpdateStatus.Task == "boot")
{
status = svcDevice.Boot(imageInfo.ImageId);
data = new
{
status
};
}
return this.Json(data, JsonRequestBehavior.AllowGet);
}
http://codingsmith.co.za/a-better-way-of-working-with-httpcontext-session-in-mvc/
This is my implementation of an interface wrapper for Session.
Its currently in production and works fine, its injected into my controllers, but I can use one of the other implementations manually when testing

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