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C# web api data filtration

Good day,
I am doing Web api rest project and want to include product search for products by size and color, but I want to be able search for example:
1 One size
[httpGet][Route("oneSize/{sizeID}")]
2 Two Sizes
[httpGet][Route("TwoSizes/{sizeID1}/{sizeID2}")]
3 One size/ One color
[httpGet][Route("OneSizeOneColor/{sizeID1}/{ColorID}")]
4 Two sizes/ One color
[httpGet][Route("TwoSizeOneColor/{sizeID1}/{sizeID2}/{ColorID}")]
etc.
Do I need to create end point for every tipe of search or is there a smarter way of doing it?

You should use the query params. You can add them via FromQuery attribute:
[HttpGet]
public IActionResult SearchProducts([FromQuery] int[] sizeIds, [FromQuery] int[] colorIds) {
}
You can replace int with string if you have string Ids.
For example, if you want to make a request with sizes 1 and 2, and color 3 and 4, the request would look like this: https://localhost:5001/your-endpoint-name?sizeIds=1&sizeIds=2&colorIds=3&colorIds=4
So query is a list of key=value url parameters after the ? separated by & sign
EDIT
You can easily query the database with the sql IN operator.
In EF Core, it would look something like this:
IQuaryable<Product> query = dbContext.Products;
if (sizeIds.Length > 0) {
query= query.Where(p => sizeIds.Contains(p.SizeId));
}
if (colorIds.Length > 0) {
query= query.Where(p => colorIds.Contains(p.ColorId));
}
List<Product> result = await query.ToListAsync();
It would be translated to the following SQL:
SELECT * FROM Products
WHERE Products.SizeId IN (1, 2) AND Products.ColorId IN (3, 4);

The problem is that I have nested classess
public class ProductBase
{
public int Id { get; set; }
public string Name { get; set; }
public string Description { get; set; }
public ICollection<ProductVariant> Variants { get; set; } = new List<ProductVariant>();
public int BaseImageId { get; set; } = 0;
public string BaseImagePath { get; set; } = string.Empty;
}
public class ProductVariant
{
public int Id { get; set; }
public int Quantity { get; set; }
public int ProductBaseId { get; set; }
public int ProductSizeId { get; set; }
public ProductSize ProductSize { get; set; }
public int ProductColorId { get; set; }
public ProductColor ProductColor { get; set; }
public IEnumerable<ImageVariant> imageVariants { get; set; } = new List<ImageVariant>();
}
public class ProductSize
{
public int Id { get; set; }
public string Size { get; set; }
}
public class ProductColor
{
public int Id { get; set; }
public string Color { get; set; }
}
I am trying something like this
public async Task<IQueryable<Models.ProductBase>> SearchProducts(int[] SizeIds, int[] ColorIds )
{
IQueryable<Models.ProductBase> query = _dataContext.ProductBases
.Include(pb => pb.Variants).ThenInclude(v => v.ProductSize)
.Include(pb => pb.Variants).ThenInclude(v => v.ProductColor)
.Include(pb => pb.Variants).ThenInclude(v => v.imageVariants);
if(SizeIds.Length > 0)
{
query = query.Where(pb => SizeIds.Contains(pb.Variants.Any(pb.Variants.doesnotWork));
}
if(ColorIds.Length > 0)
{
query = query.Where(pb => ColorIds.Contains(pb.Variants.Contains(pb.Variants.doesNotWork)));
}
List<ProductBase> result = await query.ToListAsync();
}

Fixed , this is working now
public async Task<IEnumerable<Models.ProductBase>> SearchProducts(int[] SizeIds, int[] ColorIds )
{
IQueryable<Models.ProductBase> query = _dataContext.ProductBases
.Include(pb => pb.Variants).ThenInclude(v => v.ProductSize)
.Include(pb => pb.Variants).ThenInclude(v => v.ProductColor)
.Include(pb => pb.Variants).ThenInclude(v => v.imageVariants);
if(SizeIds.Length > 0)
{
query = query.Where(pb => pb.Variants.ToList().Any(v => SizeIds.Contains(v.ProductSizeId)));
}
if(ColorIds.Length > 0)
{
query = query.Where(pb => pb.Variants.ToList().Any(v => ColorIds.Contains(v.ProductColorId)));
}
List<Models.ProductBase> result = await query.ToListAsync();
return result;
}

Filter data from 2 lists with diferent models C#

I have this models
public class RoutingAttributeModel
{
public int Bus_No { get; set; }
public int Attribute_No { get; set; }
public string Attribute_Name { get; set; }
public string Status { get; set; }
public string Notes { get; set; }
}
public class AgentRoutingAttributeModel
{
public int Agent_No { get; set; }
public int Bus_No { get; set; }
public int Attribute_No { get; set; }
public string Attribute_Name { get; set; }
public string Status { get; set; }
}
List<RoutingAttributeModel> lstComplete = new List<RoutingAttributeModel>();
List<AgentRoutingAttributeModel> lstAssigned = new List<AgentRoutingAttributeModel>();
Filled this with some data
Is it possible to filter with Linq? I want to save in a new list the diferent content between lstComplete and lstAssigned
I was trying to join both lists but got stuck there
var results1 = from cl in lstComplete
join al in lstAssigned
on cl.Attribute_No equals al.Attribute_No
select cl;

you can use linq
as my understanding, you try to find linked by attribute_No records and have a list of not matching properties?
lstComplete.Add(new RoutingAttributeModel(){
Attribute_Name = "aaa",
Attribute_No = 1,
Bus_No = 1,
Notes = "",
Status = "status"
});
lstAssigned.Add(new AgentRoutingAttributeModel()
{
Attribute_No = 1,
Agent_No = 10,
Bus_No = 1,
Attribute_Name = "bbb",
Status = "status2"
});
var lst = lstComplete
.Join(lstAssigned,
complete => complete.Attribute_No,
assigned => assigned.Attribute_No,
(complete, assigned) => new { lstComplete = complete, lstAssigned = assigned })
.Select(s => new { s.lstComplete, s.lstAssigned})
.Where(w=>
w.lstAssigned.Attribute_Name != w.lstComplete.Attribute_Name
|| w.lstAssigned.Bus_No != w.lstComplete.Bus_No
)
.ToList()
.Dump();
so result would be

You could try the following query
var filteredList = lstComplete
.Where(x => !lstAssigned.Any(y => y.Attribute_No == x.Attribute_No));

ViewModel with mixed fields and lists

I have the following ViewModel:
public class DayTaskListViewModel
{
public int Id { get; set; }
public string DateFormatted { get; set; }
public bool HasRegistrations { get; set; }
public bool HasStartedRegistrations { get; set; }
public string ItemName { get; set; }
public string WorkTypeName { get; set; }
public string Description { get; set; }
public string LocationName { get; set; }
public bool IsActive { get; set; }
public string UserName { get; set; }
public string StateStatus { get; set; }
public DateTime TodaysDate { get; set; }
public int WeekNumber { get; set; }
public int YearNumber { get; set; }
public string Msg { get; set; }
public string SignInUserName { get; set; }
public string UnitCode { get; set; }
public IEnumerable<Machinery> machineryList { get; set; }
public IEnumerable<Cleaning> cleaningList { get; set; }
}
In my controller I have this definition of the model to be sent to the view:
var model = (from a in _db.WorkTask.Where(y => y.TaskDate.Date == querytodaysDate.Date && y.IsActive == true && (y.IsPrivateUserName == null || y.IsPrivateUserName == currUserName))
join b in _db.WorkTaskLog.Where(x => (x.UserName == currUserName || x.UserName == null) && x.IsActive == true && x.StateStatusId < 4) on a.Id equals b.WorkTaskId into joinedT
from c in joinedT.DefaultIfEmpty()
select new DayTaskListViewModel
{
Id = a.Id,
DateFormatted = a.DateFormatted,
HasRegistrations = a.HasRegistrations,
HasStartedRegistrations = a.HasStartedRegistrations,
ItemName = a.ItemName,
WorkTypeName = a.WorkTypeName,
Description = a.Description,
IsActive = c.IsActive ? c.IsActive : false,
UserName = c.UserName ?? String.Empty,
StateStatus = c.StateStatus ?? "Klar",
WeekNumber = (int)currWeekNo,
YearNumber = (int)currYearNo,
Msg = "",
TodaysDate = (DateTime)todaysDate,
SignInUserName = currUserName,
LocationName = a.LocationName,
UnitCode = a.UnitCode,
//machineryList = _db.Machinery.ToList(),
//cleaningList = _db.Cleaning.ToList(),
}).ToList();
My problem is the following lines in the definition:
//machineryList = _db.Machinery.ToList(),
//cleaningList = _db.Cleaning.ToList(),
Everything works as expected, but as soon as I enable those 2 lines it breaks with null errors.
VS can compile, but it breaks runtime.
I think I see the problem, but I don't know how to solve it.
I want ALL fields in the ViewModel EXCEPT the 2 mentioned lines to be a list, and then the 2 lines to be separate lists independent of the majority.
I have tried all combinations of moving those lines around, but then VS complains.
An example from another controller is this:
DriveListViewModel model = new DriveListViewModel()
{
Drive = await _db.Drive
.Where(m => m.StatusId == 5 || m.StatusId == 1010 || m.StatusId == 1012)
.Where(m => m.LoadingComplete == null)
.Where(m => !m.UnitCode.Contains(excludeString))
.Include(s => s.DriveStatus)
.Include(d => d.Location)
.Include(f => f.Item)
.GroupBy(m => m.RegistrationNumber)
.Select(m => m.FirstOrDefault())
.OrderBy(m => m.DriverToLoad)
.ToListAsync(),
machineryList = await _db.Machinery.ToListAsync(),
cleaningList = await _db.Cleaning.ToListAsync(),
};
This works perfectly, but the former model definition as more complex, so basically, I need something similar to the latter example separating the 2 lists from the other properties in the ViewModel.
Maybe this is VERY simple - however I'm struggling with it...
Anyone see the solution to this?

I don't think that you model is a list with so many includes.
I guess you really need this ViewModel
public class ViewModel
{
public List<DayTaskListViewModel> DayTaskListViewModelList {get; set;}
public List<Machinery> MachineryList {get; set;}
public List<Cleaning> CleaningList {get; set;}
}
code
var dayTaskListViewModel= (from ....
.....
select new DayTaskListViewModel
{
Id = a.Id,
.......
}).ToList(); // or ToListAsync too?
var model = new ViewModel
{
DayTaskListViewModel = dayTaskListViewModel,
MachineryList = _db.Machinery.ToList(),
CleaningList = _db.Cleaning.ToList()
}
// or if you can or prefer , use async
MachineryList = await _db.Machinery.ToListAsync(),
CleaningList = await _db.Cleaning.ToListAsync(),

Here is a snip of the view:
Top:
#model List<Day.Models.ViewModels.DayTaskListViewModel>
#using Day.Extensions
Looping through all properties:
if (Model.Count > 0)
{
foreach (var item in Model)
{
<input name="description" class="form-input" id="description" type="text" value="#item.Description">
..Several input fields...
}
}
Works fine.
Then I need to include select fields using the machineryList from the ViewModel:
<select name="machinery" asp-items="#Model.machineryList.ToSelectListItem((int)defaultMachinery)"></select>

Linq group result to list of object

I'm trying group a collection of data by it's State but I'm stuck on the correct way to do this:
FileStateInfoDto
public class FileStateInfoDto : EntityDto<int>
{
public string StateName { get; set; }
public int StateNumber { get; set; }
public int FilesByStateCount { get; set; }
}
FileGroupDto
public class FileGroupDto : EntityDto<int>
{
public int CaseId { get; set; }
public string Name { get; set; }
public string ResourceKey { get; set; }
public bool IsFolder { get; set; }
public int SequenceNumber { get; set; }
public IList<FileStateInfoDto> FileStateInfo { get; set; }
public IList<FileGroupDto> FileGroups { get; set; }
public IList<FileInfoDto> Files { get; set; }
}
Here is the code I have:
return await Context.FileGroups
.Include(g => g.Case).Include(g => g.FileGroups).Include(g => g.Files)
.Where(g => g.Id == fileGroupId &&
g.CaseId == caseId &&
g.Case.CaseState != CaseState.Approved &&
g.Case.CaseState != CaseState.Submitted &&
(g.Case.CaseState != CaseState.Draft || g.Case.CreatorUserId == userId))
.OrderBy(g => g.SequenceNumber)
.Select(g => new FileGroup
{
Id = g.Id,
CaseId = g.CaseId,
Name = g.Name,
ResourceKey = g.ResourceKey,
IsFolder = g.IsFolder,
SequenceNumber = g.SequenceNumber,
FileGroups = g.FileGroups,
FileStateInfo = g.Files.GroupBy(f => f.State), <-- My problem
Files = g.Files.Where(f => f.IsActive && f.State != FileApprovalState.Approved).Select(
f => new File
{
Id = f.Id,
CreationTime = f.CreationTime,
CreatorUserId = f.CreatorUserId,
Title = f.Title,
FileName = f.FileName,
URL = f.URL,
Size = f.Size,
KeepOnPortal = f.KeepOnPortal,
CreatorUserName = Context.Users.FirstOrDefault(u => u.Id == (f.CreatorUserId ?? 0)).UserName,
CreatorUserRole = Context.CasePersons.Where(p => p.CaseId == caseId && p.UserId == f.CreatorUserId).Take(1).Select(p => p.CaseRoleType.Title).FirstOrDefault()
}
).ToList()
}).FirstOrDefaultAsync();
I'm trying to figure out how I should write this line FileStateInfo = g.Files.GroupBy(f => f.State) so it will give the expected result as below.
FileStateInfo = [{"StateName":"Approved","StateNumber":1, "FilesByStateCount":22},
{"StateName":"NotApproved","StateNumber":2, "FilesByStateCount":11}]
The State in g.Files.GroupBy(f => f.State) is an enum that contains Approved and NotApproved
StateName = Name of the State.
StateNumber = The Integer assinged.
FilesByStateCount = The files count by this state.
I hope it's possible because I've been trying to make this for a few days now.
I've tried things like this Post

Find Unique count on field using LINQ

I am trying to determine the Distinct count for a particular field in a collection of objects.
private static RemittanceCenterBatchSummaryListModel SummarizeFields(RemittanceCenterSummaryListModel remittanceCenterSummaryListModel)
{
var result = remittanceCenterSummaryListModel.RemittanceBatchSummaryRecord.GroupBy(x => new{x.FileId, x.SourceFileName, x.BatchCode, x.BatchType})
.Select(x => new RemittanceCenterBatchSummarizedModel()
{
FileId = x.Key.FileId,
SourceFileName = x.Key.SourceFileName,
BatchCode = x.Key.BatchCode,
BatchType = x.Key.BatchType,
DetailRecordCountAdc = x.Count(y => y.BillingSystemCode == BillingSystemCode.Adc),
DetailRecordCountNotAdc = x.Count(y => y.BillingSystemCode == BillingSystemCode.Exd),
AmountAdc = x.Where(y => y.BillingSystemCode == BillingSystemCode.Adc).Sum(y => y.PaymentAmount),
AmountNotAdc = x.Where(y => y.BillingSystemCode == BillingSystemCode.Exd).Sum(y => y.PaymentAmount),
UniqueFileCount = x.Select(y => x.Key.FileId).Distinct().Count()
});
return CreateSummaryListModel(result);
}
Input entities:
public class RemittanceCenterSummaryListModel
{
public RemittanceCenterSummaryListModel()
{
this.RemittanceBatchSummaryRecord = new List<RemittanceBatchProcessingModel>();
}
public List<RemittanceBatchProcessingModel> RemittanceBatchSummaryRecord { get; private set; }
}
public class RemittanceCenterBatchSummarizedModel
{
public string FileId { get; set; }
public string SourceFileName { get; set; }
public string BatchCode { get; set; }
public string BatchType { get; set; }
public int DetailRecordCountAdc { get; set; }
public int DetailRecordCountNotAdc { get; set; }
public int DetailRecordCountTotal { get; set; }
public decimal AmountAdc { get; set; }
public decimal AmountNotAdc { get; set; }
public decimal AmountTotal { get; set; }
public BillingSystemCode BillingSystemCode { get; set; }
public int UniqueFileCount { get; set; }
}
private static RemittanceCenterBatchSummaryListModel CreateSummaryListModel(IEnumerable<RemittanceCenterBatchSummarizedModel> summaryModels)
{
var summaryModelList = new RemittanceCenterBatchSummaryListModel();
foreach (var summaryRec in summaryModels)
{
var summaryModel = new RemittanceCenterBatchSummarizedModel
{
FileId = summaryRec.FileId,
SourceFileName = summaryRec.SourceFileName,
BatchCode = summaryRec.BatchCode,
BatchType = summaryRec.BatchType,
DetailRecordCountAdc = summaryRec.DetailRecordCountAdc,
DetailRecordCountNotAdc = summaryRec.DetailRecordCountNotAdc,
AmountAdc = summaryRec.AmountAdc,
AmountNotAdc = summaryRec.AmountNotAdc,
UniqueFileCount = summaryRec.UniqueFileCount
};
summaryModelList.RemittanceBatchSummary.Add(summaryModel);
}
return summaryModelList;
}
Example input records:
Record1:
FileId: '123'
SourceFileName: 'test.file.txt'
BatchCode: 'aaa'
BatchType: 'scanned'
PaymentAmount: '50.00'
BillingSystemCode: 'Adc'
Record1:
FileId: '1234'
SourceFileName: 'test.file2.txt'
BatchCode: 'aab'
BatchType: 'scanned'
PaymentAmount: '52.00'
BillingSystemCode: 'Adc'
ActualOuput for UniqueFileCount Field:
UniqueFileCount = 1
ExpectedOutput results for UniqueFileCount Field:
UniqueFileCount = 2
What am I doing wrong?

It sounds like you want the distinct count of FileId for the entire collection and not just for each group, which will always be 1 since FileId is one of the fields you group on. If that is the case then you can just calculate that count first
int distinctFileIds = remittanceCenterSummaryListModel.RemittanceBatchSummaryRecor‌​d
.Select(x => x.FileId)
.Distinct()
.Count();
Then use that in your Linq query
UniqueFileCount = distinctFileIds