Added relation support

src/HopFrame.Core/Services/Implementations/TableManager.cs

@@ -1,20 +1,23 @@
-using HopFrame.Core.Config;
+using System.ComponentModel.DataAnnotations.Schema;
+using System.Reflection;
+using HopFrame.Core.Config;
 using Microsoft.EntityFrameworkCore;
 
 namespace HopFrame.Core.Services.Implementations;
 
-internal sealed class TableManager<TModel>(DbContext context, TableConfig config) : ITableManager where TModel : class {
+internal sealed class TableManager<TModel>(DbContext context, TableConfig config, IContextExplorer explorer) : ITableManager where TModel : class {
     
     public IQueryable<object> LoadPage(int page, int perPage = 20) {
         var table = context.Set<TModel>();
-        return table
+        var data = IncludeForgeinKeys(table);
+        return data
             .Skip(page * perPage)
             .Take(perPage);
     }
 
     public (IEnumerable<object>, int) Search(string searchTerm, int page = 0, int perPage = 20) {
         var table = context.Set<TModel>();
-        var all = table
+        var all = IncludeForgeinKeys(table)
             .AsEnumerable()
             .Where(item => ItemSearched(item, searchTerm))
             .ToList();
@@ -46,4 +49,34 @@ internal sealed class TableManager<TModel>(DbContext context, TableConfig config
 
         return false;
     }
+
+    public string DisplayProperty(object item, PropertyInfo info, TableConfig? tableConfig) {
+        if (item is null) return string.Empty;
+        var prop = tableConfig?.Properties.Find(prop => prop.Info.Name == info.Name);
+        if (prop is null) return item.ToString() ?? string.Empty;
+
+        var propValue = prop.Info.GetValue(item);
+        if (propValue is null || prop.DisplayedProperty is null)
+            return propValue?.ToString() ?? string.Empty;
+        
+        var innerConfig = explorer.GetTable(propValue.GetType());
+        return DisplayProperty(propValue, prop.DisplayedProperty, innerConfig);
+    }
+
+    private IQueryable<TModel> IncludeForgeinKeys(IQueryable<TModel> query) {
+        var pendingQuery = query;
+        
+        foreach (var property in config.Properties) {
+            var attr = property.Info
+            .GetCustomAttributes(true)
+            .FirstOrDefault(att => att is ForeignKeyAttribute) as ForeignKeyAttribute;
+
+            if (attr is null) continue;
+
+            pendingQuery = pendingQuery.Include(property.Info.Name);
+        }
+
+        return pendingQuery;
+    }
+
 }