package api type bookPostCreate struct { Title string `json:"title" binding:"required,max=300"` Author string `json:"author" binding:"max=100"` Rating int `json:"rating" binding:"min=0,max=10"` } type userPostCreate struct { Username string `json:"username" binding:"required,min=2,max=20"` Password string `json:"password" binding:"required,min=6,max=100"` }