add pagination

Administrator
1 parent e02ee314
Showing 8 changed files with 64 additions and 18 deletions Show diff stats
src/Maps/Controllers/BusStopController.cs
src/Maps/project.json
src/MapsDb/DataService/BusStopDs.cs
src/MapsDb/Interfaces/IBusStopDs.cs
src/MapsDb/Models/BusStop.cs
src/MapsDb/PostgresDbContext.cs
src/MapsModels/DsModels/BusStopEditDsM.cs
src/MapsModels/DsModels/PaginationDsM.cs
@@ -33,16 +33,30 @@ namespace Maps.Controllers
  
         // GET: BusStop
         [HttpGet]
-        public async Task<IActionResult> Index()
+        public async Task<IActionResult> Index([FromQuery] PaginationDsM data)
         {
-            var busStops = await _busStopDs.GetIndexListAsync();
+            try
+            {
+                var busStops = await _busStopDs.GetIndexListAsync(data);
+
+                BusStopListVm vm = new BusStopListVm
+                {
+                    BusStopEditDsM = busStops.ToList()
+                };
  
-            BusStopListVm vm = new BusStopListVm
+                return Json(vm);
+            }
+            catch (NullReferenceException e)
             {
-                BusStopEditDsM = busStops.ToList()
-            };
+                Response.StatusCode = 400;
+                return Json("There is no field with name " + data.sort);
+            }
+            catch (Exception e)
+            {
+                return NotFound();
+            }
+
  
-            return Json(vm);
         }
  
         [HttpGet]
@@ -24,6 +24,7 @@
         "Microsoft.Extensions.Options.ConfigurationExtensions": "1.0.0",
         "Microsoft.VisualStudio.Web.BrowserLink.Loader": "14.0.0",
         "Microsoft.EntityFrameworkCore.Tools": "1.0.0-preview4-final",
+        "System.Reflection.TypeExtensions": "4.3.0-preview1-24530-04",
         "Microsoft.VisualStudio.Web.CodeGeneration.Tools": {
             "version": "1.0.0-preview2-final",
             "type": "build"
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
 using System.Threading.Tasks;
 using MapsDb.Interfaces;
 using MapsDb.Models;
@@ -13,14 +14,14 @@ namespace MapsDb.DataService
         public BusStopDs(){
             _context = new PostgresDbContext();
         }
-        public Task<IList<BusStopEditDsM>> GetIndexListAsync(){
-            return Task.Factory.StartNew(GetAllBusStop);
+        public Task<IList<BusStopEditDsM>> GetIndexListAsync(PaginationDsM pagination){
+            return Task.Factory.StartNew(()=> { return GetAllBusStop(pagination); });
         }
-        private IList<BusStopEditDsM> GetAllBusStop()
+        private IList<BusStopEditDsM> GetAllBusStop(PaginationDsM pagination)
         {
-           return _context.BusStop.Select(busStop => new BusStopEditDsM
+            var data =  _context.BusStop.Select(busStop => new BusStopEditDsM
             {
-                BusStopId = busStop.BusStopId,
+                Id = busStop.Id,
                 RoadId = busStop.RoadId,
                 RegionId = busStop.RegionId,
                 SettlementId = busStop.SettlementId,
@@ -34,7 +35,19 @@ namespace MapsDb.DataService
                 YearBuild = busStop.YearBuild,
                 YearRepair = busStop.YearRepair,
                 StateCommonId = busStop.StateCommonId
-            }).OrderByDescending(BusStop => BusStop.BusStopId).ToList();
+            }).Skip(pagination.from).Take(pagination.perPage);
+            switch (pagination.orderType())
+            {
+                case "ASC":
+                    return data.OrderBy(i => i.GetType().GetProperty(pagination.sort).GetValue(i, null)).ToList();
+          
+                case "DESC":
+                    return data.OrderByDescending(i => i.GetType().GetProperty(pagination.sort).GetValue(i, null)).ToList();
+            
+                default:
+                    return data.OrderBy(i => i.GetType().GetProperty(pagination.sort).GetValue(i, null)).ToList();
+            }     
+            
         }
  
         public Task<BusStop> CreateAsync(BusStopEditDsM data){
@@ -54,7 +67,7 @@ namespace MapsDb.DataService
         private BusStop Update(BusStopEditDsM data, int id)
         {   
             BusStop Model = InsertModel(data);
-            Model.BusStopId = id;
+            Model.Id = id;
             _context.BusStop.Update(Model);
             _context.SaveChanges();
             return Model;
@@ -79,7 +92,7 @@ namespace MapsDb.DataService
         }
         public async Task<int> DeleteAsync(int Id)
         {
-            var busStop = await _context.BusStop.SingleOrDefaultAsync(x => x.BusStopId == Id);
+            var busStop = await _context.BusStop.SingleOrDefaultAsync(x => x.Id == Id);
             _context.BusStop.Remove(busStop);
             return await _context.SaveChangesAsync();
         }
@@ -6,7 +6,7 @@ namespace MapsDb.Interfaces
 {
     public interface IBusStopDs
     {
-        Task<IList<BusStopEditDsM>> GetIndexListAsync();
+        Task<IList<BusStopEditDsM>> GetIndexListAsync(PaginationDsM pagination);
         Task<BusStop> CreateAsync(BusStopEditDsM busStop);
         Task<BusStop> UpdateAsync(BusStopEditDsM busStop, int id);
         Task<int> DeleteAsync(int Id);
@@ -5,7 +5,7 @@ namespace MapsDb.Models
 {
     public partial class BusStop
     {
-        public int BusStopId { get; set; }
+        public int Id { get; set; }
         public int? RoadId { get; set; }
         public int? RegionId { get; set; }
         public int? SettlementId { get; set; }
@@ -18,7 +18,7 @@ namespace MapsDb
             {
                 entity.ToTable("bus_stop");
  
-                entity.Property(e => e.BusStopId).HasColumnName("bus_stop_id");
+                entity.Property(e => e.Id).HasColumnName("id");
  
                 entity.Property(e => e.AreaLandAvailability).HasColumnName("area_land_availability");
  
@@ -2,7 +2,7 @@ namespace MapsModels.DsModels
 {
     public class BusStopEditDsM
     {
-        public int? BusStopId { get; set; }
+        public int? Id { get; set; }
         public int? RoadId { get; set; }
         public int? RegionId { get; set; }
         public int? SettlementId { get; set; }
+namespace MapsModels.DsModels
+{
+    public class PaginationDsM
+    {
+        public const string ASC = "ASC";
+        public const string DESC = "DESC";
+        public int from { get; set; }
+        public int perPage { get; set; }
+        public string sort { get; set; }
+        public string orderType(){
+            if(sort.StartsWith("-")){
+                sort = sort.Substring(1);
+                return DESC;
+            }
+            return ASC;
+        }
+    }
+}
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