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| package main
import ( "net/http" "time"
"github.com/gin-gonic/gin" "github.com/gin-gonic/gin/binding" "github.com/go-playground/validator/v10" )
type Booking struct { CheckIn time.Time `form:"check_in" binding:"required,bookabledate" time_format:"2006-01-02"` CheckOut time.Time `form:"check_out" binding:"required,gtfield=CheckIn,bookabledate" time_format:"2006-01-02"` }
var bookableDate validator.Func = func(fl validator.FieldLevel) bool { date, ok := fl.Field().Interface().(time.Time) if ok { today := time.Now() if today.After(date) { return false } } return true }
func main() { route := gin.Default()
if v, ok := binding.Validator.Engine().(*validator.Validate); ok { v.RegisterValidation("bookabledate", bookableDate) }
route.GET("/bookable", getBookable) route.Run(":8085") }
func getBookable(c *gin.Context) { var b Booking if err := c.ShouldBindWith(&b, binding.Query); err == nil { c.JSON(http.StatusOK, gin.H{"message": "Booking dates are valid!"}) } else { c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) } }
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