controllers

type Square struct {
	X         int    `json:"x" bson:"x" binding:"gte=0"`
	Y         int    `json:"y" bson:"y" binding:"gte=0"`
	Color     byte   `json:"color" bson:"color" binding:"required,lt=16"`
	Author    string `json:"author" bson:"author" binding:"required"`
	Timestamp int64  `json:"timestamp,omitempty" bson:"timestamp"`
}