Return empty array when there're no rows

server/services/dashboards_service.go

@@ -1,5 +1,7 @@
 package services
 
+import "database/sql"
+
 type DashboardsService struct {
 	ctx *Context
 }
@@ -16,6 +18,10 @@ func (s *DashboardsService) GetList() ([]DashboardItem, error) {
 	rows, err := s.ctx.DB.Query("SELECT id, name, contents FROM dashboards")
 
 	if err != nil {
+		if err == sql.ErrNoRows {
+			return items, nil
+		}
+
 		return nil, err
 	}
 

server/services/sensor_values_service.go

@@ -1,6 +1,9 @@
 package services
 
-import "time"
+import (
+	"database/sql"
+	"time"
+)
 
 type SensorValuesService struct {
 	ctx *Context
@@ -29,6 +32,10 @@ func (s *SensorValuesService) GetList(sensorId int64, from int64, to int64) ([]s
 	rows, err := s.ctx.DB.Query("SELECT timestamp, value FROM sensor_values WHERE sensor_id = ? AND timestamp > ? AND timestamp < ? ORDER BY timestamp ASC", sensorId, from, to)
 
 	if err != nil {
+		if err == sql.ErrNoRows {
+			return values, nil
+		}
+
 		return nil, err
 	}
 

server/services/sensors_service.go

@@ -2,6 +2,7 @@ package services
 
 import (
 	"crypto/rand"
+	"database/sql"
 	"math/big"
 )
 
@@ -21,6 +22,10 @@ func (s *SensorsService) GetList() ([]SensorItem, error) {
 	rows, err := s.ctx.DB.Query("SELECT id, name, auth_key FROM sensors")
 
 	if err != nil {
+		if err == sql.ErrNoRows {
+			return sensors, nil
+		}
+
 		return nil, err
 	}