models/positions.go
@@ -14,6 +14,9 @@ return "positions" } func (d *Positions) Save() error { return db.Table(d.TableName()).Save(d).Error } func (d *Positions) FindDevicePosition(devId string, timestamp int64) error { return db.Table(d.TableName()).Where("device_id = ? AND create_time <= ?", devId, timestamp).Order("create_time desc").First(&d).Error }