Is there any way to return a subset of a table in ServiceStack.OrmLite?
Something like:
public class MyStuff
{
public Guid Id { get; set; }
public string Name { get; set; }
public byte[] Data { get; set; } // Some large blob, which is not desired in the list
}
var somestuff = db.Select<MyStuff>(x => new { Id = x.Id, Name = x.Name });
I am really hoping to avoid manual stuff, like "select blabla from somewhere"...
I had that exact same problem. Here is what I did:
public class MyStuff
{
public Guid Id { get; set; }
public string Name { get; set; }
public byte[] Data { get; set; }
}
var somestuff = Db.Select<MyStuff>(p => p.Select(x => new { x.Id, x.Name }));
The only changes made, to what you did above, were done to the Db.Select.
Create a class for your basic information and set an alias.
[Alias("MyStuff")]
public class MyBasicStuff
{
public Guid Id { get;set; }
public string Name { get; set; }
}
var basicStuff = db.Select<MyBasicStuff>();
Related
I have this models:
public class AudienceInfo
{
public int Id { get; set; }
public string Departments { get; set; }
public List<CountOfDestination> CountOfDestinations { get; set; }
}
public sealed class CountOfDestination
{
public string DestinationName { get; set; }
public int? CountRoom { get; set; }
public int? CountOfFiles { get; set; }
}
And this table in DB.
public class AudienceInfo : IModelWithId
{
public int Id { get; set; }
....
public RoomPurpose RoomPurpose { get; set; }
public List<AudienceInfo_File> Files { get; set; }
}
After selecting the "Departments" (where condition), I get a list of data. Then, I GroupBy "RoomPurpose" and get
"CountRoom" for every row = DestinationName. This part work correctly.
Also, i need to get the CountOfFiles ... don't know how to do this
return dbAudInfo
.Where(x => x.RightOfPreferentialUse.Id == Id)
.Select(x => new AudienceInfo
{
Departments = x.RightOfPreferentialUse.Name,
Date = date1,
CountOfDestinations = dbAudInfo
.GroupBy(z => new { z.RoomPurpose })
.Select(y => new CountOfDestination
{
DestinationName = y.Key.RoomPurpose.Name,
CountRoom = y.Count(z => z.RightOfPreferentialUse.Id == Id),
CountOfFiles = ?????????????????????????
}).ToList()
}).FirstOrDefaultAsync();
How can i connect a list in LINQ query with GroupBy.
Also, i need to get the CountOfFiles ... don't know how to do this
Use:
CountOfFiles = y.ToList().First(a => a.Id == y.Id).Files.Count()
How can i connect a list in LINQ query with GroupBy.
Can you elaborate?
Hi every one I am new to ASP.Net Web API and I want to Post JSON array data any get there response.
My JSON POST Array format is
{
"User_Id":"admi12n#1234","Key_Code":"3F-47-AB-84-9F-EB-D6-6B-9C-62-CC-85-98-4D-28-6B",
"ProductDetails": [
{"Product_Id":"ELT-7035","Price":"999","Quantity":"5"},
{"Product_Id":"ELT-1254","Price":"1024","Quantity":"3"}
]
}
And I want response as follows
{
"User_Id":"admi12n#1234","Key_Code":"3F-47-AB-84-9F-EB-D6-6B-9C-62-CC-85-98-4D-28-6B",
"OrderID":"Ord-021","Name":"Sabyasachi"
"ProductDetails": [
{"Product_Id":"ELT-7035","Price":"999","Quantity":"5"},
{"Product_Id":"ELT-1254","Price":"1024","Quantity":"3"}
]
}
I generate OrderID as Random and Name from posted User_Id. Here I want to post multiple product in one order.
My Order class is as follows
public class Order
{
[Key]
public long ID { get; set; }
public string Order_Id { get; set; }
public string Product_Id { get; set; }
public long Quantity { get; set; }
public long Amount { get; set; }
public string User_Id { get; set; }
public string Key_Code { get; set; }
public DateTime Order_Date { get; set; }
public DateTime Modified_Date { get; set; }
}
And my Product class as follows
public class Product
{
[Key]
public int Id { get; set; }
public string Product_Code { get; set; }
public string Product_Name { get; set; }
public string Product_Category { get; set; }
public string Product_Description { get; set; }
public string Quantity { get; set; }
public string Price { get; set; }
public string Image { get; set; }
public DateTime Created_Date { get; set; }
public DateTime Modified_Date { get; set; }
}
I am not able to ind the best way to post the order
public Order Add(Order odrerDetails) //This will not give array of data for products
{
using (var context = new EcommerceDBContext())
{
odrerDetails.Order_Id = Helper.Random(7); //Generate random orderID from my class
odrerDetails.Created_Date = DateTime.Now;
odrerDetails.Modified_Date = DateTime.Now;
//How to Save other details
context.objOrderListing.Add(odrerDetails);
context.SaveChanges();
return odrerDetails;
}
}
In API controllers my code is as follows
public HttpResponseMessage PostOrder([FromBody] Order_Listing orderData)
{
orderData = repository.Add(orderData);
var response = Request.CreateResponse<Order_Listing>(HttpStatusCode.Created, orderData);
string uri = Url.Link("DefaultApi", new { customerID = orderData.ID });
response.Headers.Location = new Uri(uri);
return response;
}
Please help me how to achieve this.
There are several issues with your code:
Your Order and Product classes do not reflect the structure of
your JSON.
The Order class contains product details in a 1:1
relationship. Based on the JSON I assume you want a 1:n relationship.
Properties in your JSON need to have the same name as
in your classes or they won't be mapped.
Change your classes to the following and it should work.
Of course you could also change the property names in your JSON.
If you can't or don't want to change your property names, consider using DTOs
public class Order
{
public string User_Id { get; set; }
public string Key_Code { get; set; }
public string OrderID { get; set; }
public string Name { get; set; }
public List<Product> ProductDetails { get; set; }
// add the rest of your properties
}
public class Product
{
public string Product_Id { get; set; }
public string Price { get; set; }
public string Prd_Qty { get; set; }
// add the rest of your properties
}
Update: added code for Add method and Api method
Your Add method would look like this:
public Order Add(Order orderWithDetails)
{
using (var context = new EcommerceDBContext())
{
orderWithDetails.Order_Id = Helper.Random(7); //Generate random orderID from my class
orderWithDetails.Created_Date = DateTime.Now;
orderWithDetails.Modified_Date = DateTime.Now;
context.objOrderListing.Add(orderWithDetails);
// Save each Product
foreach (var detail in orderWithDetails.ProductDetails)
{
//whatever you need to do in your db-context
context.objOrderDetails.Add(detail); // just an example
}
context.SaveChanges();
return orderWithDetails;
}
}
The signature of your Api method looks wrong. What is Order_Listing? This should be Order, unless it's a DTO, in wich case you need a method to get an Order from Order_Listing.
public HttpResponseMessage PostOrder([FromBody] Order orderData)
{
orderData = repository.Add(orderData);
var response = Request.CreateResponse<Order_Listing>(HttpStatusCode.Created, orderData);
string uri = Url.Link("DefaultApi", new { customerID = orderData.ID });
response.Headers.Location = new Uri(uri);
return response;
}
A few more remarks:
If it is indeed a 1:n relationship, you probably need a property Product.OrderId.
The Order class should not have any reference to Product except for the list.
Quantity and Price should most likely not be String but numerical values, e.g. decimal.
If Order.ID is your primary key, then having Order.Order_ID is really confusing. Consider renaming it to Order.Order_Number.
public class Order
{
public string User_Id { get; set; }
public string Key_Code { get; set; }
public string OrderID { get; set; }
public string Name { get; set; }
public Product[] ProductDetails { get; set; }
}
public class OrderDTO
{
public string ClientName { get; set; }
public ICollection<OrderDetailDTO> Details { get; set; }
}
public class Order
{
public string ClientName { get; set; }
public ICollection<OrderDetail> Details { get; set; }
}
public class OrderDetailDTO
{
public int Quantity { get; set; }
public string ProductName { get; set; }
}
public class OrderDetail
{
public int OrderId { get; set; }
public int Quantity { get; set; }
public string ProductName { get; set; }
}
Let's say there are 4 OrderDetailDTO, I want to have the mapped OrderDetail instances with auto-incremented integer values. What I am doing now is post-process the mapped instance.
var mappedOrder = Mapper.Map<OrderDTO, Order>(orderDto);
var orderId = 1;
foreach (OrderDetail detail in mappedOrder.Details)
{
detail.OrderId = orderId++;
}
How can I configure the mapping options, so that the mapped ICollection<OrderDetail> contains 4 OrderDetail instances with OrderId as 1, 2, 3, 4?
You could configure AutoMapper to do this with AfterMap:
Mapper.CreateMap<OrderDTO, Order>()
.AfterMap((src, dest) =>
{
int orderId = 1;
foreach (OrderDetail detail in dest.Details)
{
detail.OrderId = orderId++;
}
});
I don't think there's really a "cleaner" way to do it using AutoMapper.
I use the following method which is much simpler and can be written in a base class or an extension method. The example here uses Generics but can be easily transformed
protected virtual IEnumerable<T> ConvertCsvLines(IEnumerable<TV> lines)
{
var lineNumber = 0;
return lines.Select(x =>
{
var retVal = Mapper.Map<TV, T>(x);
retVal.LineNumber = lineNumber++;
return retVal;
});
}
Could somebody please provide an example of how to combine two models within one view?
Currently I have a page called RecordCard which contains:
#model IEnumerable<WebApplication1.Models.Weight>
This is provided by the following code in the AccountController:
public ActionResult RecordCard()
{
var UserId = User.Identity.GetUserId();
var weightModel = from m in db.Weights where m.UserId == UserId select m;
return View(weightModel);
}
The RecordCard page also contains a form which is bound to the following class:
public class AddWeightModel
{
[Required]
[DataType(DataType.Text)]
[Display(Name = "Stone")]
public Nullable<short> Stone { get; set; }
[Required]
[DataType(DataType.Text)]
[Display(Name = "Pound")]
public Nullable<short> Pound { get; set; }
}
However, these are two individual models with different purposes, so how do I combine to a single model that contains an IEnumerable list and set of form elements that will ultimately post to the AccountController correctly to add a record to the database using the following code:
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult RecordCard(Weight Model)
{
if (ModelState.IsValid)
{
using (WebApplication1Entities db = new WebApplication1Entities())
{
Weight weight = new Weight();
weight.UserId = User.Identity.GetUserId();
weight.Stone = Model.Stone;
weight.Pound = Model.Pound;
weight.Date = System.DateTime.Now;
db.Weights.Add(Model);
db.SaveChanges();
}
}
return View(Model);
}
I have included the Weight class below:
public partial class Weight
{
public int Id { get; set; }
public string UserId { get; set; }
public Nullable<short> Stone { get; set; }
public Nullable<short> Pound { get; set; }
public Nullable<System.DateTime> Date { get; set; }
}
Also here is the WebApplication1Entities class which declares the Weight table as Weights:
public partial class WebApplication1Entities : DbContext
{
public WebApplication1Entities()
: base("name=WebApplication1Entities")
{
}
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
throw new UnintentionalCodeFirstException();
}
public virtual DbSet<Weight> Weights { get; set; }
}
Please explain what needs to be modified and how, no matter what I try to read, follow and implement, I seem to be missing something.
Any help would be much appreciated :-)
I would say this is good example of using ViewModel here. I would suggest something like -
Create ViewModel with the composition of the two classes
public class AddWeightModel
{
[Required]
[DataType(DataType.Text)]
[Display(Name = "Stone")]
public Nullable<short> Stone { get; set; }
[Required]
[DataType(DataType.Text)]
[Display(Name = "Pound")]
public Nullable<short> Pound { get; set; }
}
....
public partial class Weight
{
public int Id { get; set; }
public string UserId { get; set; }
public Nullable<short> Stone { get; set; }
public Nullable<short> Pound { get; set; }
public Nullable<System.DateTime> Date { get; set; }
}
.....
public class WeightViewModel
{
public IList<AddWeightModel> AddWeightModel { get; set; }
public Weight Weight { get; set; }
}
Then change your view to accept the view models -
#model WeightViewModel
Finally modify your controller to cope with the change -
public ActionResult RecordCard()
{
var UserId = User.Identity.GetUserId();
var weightModel = from m in db.Weights where m.UserId == UserId select m;
var viewModel = new WeightViewModel
{
Weight = weightModel,
AddWeightModel = new List<AddWeightModel>(){}
};
return View(viewModel);
}
[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult RecordCard(WeightViewModel viewModel)
{
Weight Model = viewModel.Weight;
if (ModelState.IsValid)
{
using (WebApplication1Entities db = new WebApplication1Entities())
{
Weight weight = new Weight();
weight.UserId = User.Identity.GetUserId();
weight.Stone = Model.Stone;
weight.Pound = Model.Pound;
weight.Date = System.DateTime.Now;
db.Weights.Add(Model);
db.SaveChanges();
}
}
return RedirectToAction("RecordCard");
}
I've tackled this before, can came to an elegant solution.
First, you'd want to setup your main classes to send, as well as a 'holder' class to store them to eventually send to a view.
As you probably found out, this is because a view can't have multiple models sent to it.
public class WebsiteTheme
{
public string Color { get;set; }
public string Title { get;set; }
public WebsiteTheme() {
Color = "blue";
Title = "test website";
}
}
public class User
{
public string Name { get;set; }
public string Gender { get;set; }
public User() {
Name = "Anonymous";
Gender = "Unspecified";
}
}
public class ToPage
{
public WebsiteTheme WebsiteTheme{ get; set; }
public User User { get; set; }
public ToPage() {
websiteTheme = new WebsiteTheme();
user = new User();
}
}
This will allow you to send any amount of classes to your page.
Then, in your controller, you'd want to populate those classes. Make sure to initialise them all first, then set the populated classes to your holder class.
WebsiteTheme websiteTheme = new WebsiteTheme();
websiteTheme.Color = "orange";
User user = new User();
user.Name = "Darren";
ToPage toPage = new ToPage();
toPage.User = user;
toPage.WebsiteTheme = websiteTheme;
return View(toPage);
In your view, you'd call them in any way you want to. But make sure to use HolderModel.SpecifiedModel in every case.
#model WebApplication1.Models.ToPage
#Html.DisplayFor(model => model.User.Name)
I did a compound model like this:
public class CompoundModel
{
public SearchModel SearchModel { get; set; }
public QueryResultRow ResultModel { get; set; }
}
public class QueryResultRow
{
[DisplayName("Id")]
public long id { get; set; }
[DisplayName("Importdatum")]
public System.DateTime importdate { get; set; }
[DisplayName("Mandant")]
public int indexBMClient { get; set; }
}
public class SearchModel
{
[Required]
[DataType(DataType.Date)]
[Display(Name = "Zeitraum von")]
public DateTime dateFrom { get; set; }
[Display(Name = "Terminal-ID")]
public string tid { get; set; }
[Display(Name = "Belegnummer")]
public string receiptnumber { get; set; }
}
In the view header:
#model MyProject_aspmvc.Models.CompoundModel
And get data access from the SearchModel, for example:
model => model.SearchModel.tid
and data access from the ResultModel, for example:
model => model.ResultModel.importdate
I need to query data from 2 table
public class UserProfile
{
public int UserId { get; set; }
public string UserName { get; set; }
public string Name { get; set; }
}
and
public class PrivateMessage
{
public int MessageId { get; set; }
public string Sender { get; set; }
public string Receiver { get; set; }
public string Subject { get; set; }
public string Message { get; set; }
private DateTime _date = DateTime.Now;
public DateTime sentDate { get { return _date; } set { _date = value; } }
}
and this what i tried on my controller
public ActionResult Index()
{
var x = User.Identity.Name;
var query = from p in db.PrivateMessages
join u in db.UserProfiles on p.Sender equals u.UserName
where p.Receiver == x
select new
{
u.UserName,
u.Name,
p.Receiver,
p.Subject,
p.Message,
p.sentDate
};
return View(query);
}
this is my view model
#model IEnumerable<SeedSimple.Models.PrivateMessage>
but i got this error
The model item passed into the dictionary is of type
'System.Data.Entity.Infrastructure.DbQuery1[<>f__AnonymousType95[System.String,System.String,System.String,System.String,System.DateTime]]',
but this dictionary requires a model item of type
'System.Collections.Generic.IEnumerable`1[SeedSimple.Models.PrivateMessage]'.
all i want is to get username and name from UserProfile table and receiver, subject, message and sentDate on PrivateMessage table
Well you're passing as a Model an anonymous type yet you have a strongly typed View.
You can either create a new ViewModel that contains all the fields you're using for your query and pass that, or you can pass all the properties in the ViewBag (not a pretty solution).
EDIT
Thought I'd give you an example.
Here is a ViewModel containing the data you need:
public class MessageViewModel
{
public string UserName { get; set; }
public string Name { get; set; }
public string Receiver { get; set; }
public string Subject { get; set; }
public string Message { get; set; }
public DateTime SentDate { get; set; }
}
In your view:
#model IEnumerable<SeedSimple.Models.MessageViewModel>
In your Controller:
public ActionResult Index()
{
var x = User.Identity.Name;
var result = from p in db.PrivateMessages
join u in db.UserProfiles on p.Sender equals u.UserName
where p.Receiver == x
select new MessageViewModel
{
UserName = u.UserName,
Name = u.Name,
Receiver = p.Receiver,
Subject = p.Subject,
Message = p.Message,
SentDate = p.sentDate
};
return View(result);
}
I hope this helps.