Enhance company and company category search forms by adding new sortable fields (email, phone, country, state, language, currency) and updating related API documentation.

pkg/mongo/cursor.go

@@ -5,6 +5,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"strconv"
+	"strings"
 
 	"go.mongodb.org/mongo-driver/v2/bson"
 )
@@ -189,6 +190,10 @@ func documentSortValue(docMap bson.M, sortField string) (interface{}, error) {
 		return id, nil
 	}
 
+	if strings.Contains(sortField, ".") {
+		return nestedDocumentValue(docMap, sortField)
+	}
+
 	sortValue, exists := docMap[sortField]
 	if !exists {
 		return nil, fmt.Errorf("sort field %s not found in document", sortField)
@@ -196,6 +201,30 @@ func documentSortValue(docMap bson.M, sortField string) (interface{}, error) {
 	return sortValue, nil
 }
 
+func nestedDocumentValue(docMap bson.M, path string) (interface{}, error) {
+	parts := strings.Split(path, ".")
+	var current interface{} = docMap
+
+	for _, part := range parts {
+		nested, ok := current.(bson.M)
+		if !ok {
+			if nestedMap, ok := current.(map[string]interface{}); ok {
+				nested = bson.M(nestedMap)
+			} else {
+				return nil, fmt.Errorf("sort field %s not found in document", path)
+			}
+		}
+
+		value, exists := nested[part]
+		if !exists {
+			return nil, fmt.Errorf("sort field %s not found in document", path)
+		}
+		current = value
+	}
+
+	return current, nil
+}
+
 func documentIDHex(docMap bson.M) (string, error) {
 	id, exists := docMap["_id"]
 	if !exists {