craban/server/model/post.go

package model

import (
	"fmt"
)

type Post struct {
	ID        int    `json:"id"`
	UserID    int    `json:"user_id"`
	GameID    int    `json:"game_id"`
	CreatedAt int    `json:"createdat"`
	Body      string `json:"body"`
}

func (p *Post) IsValid() error {
	if p.UserID == 0 {
		return fmt.Errorf("user id must not be empty")
	}

	if p.GameID == 0 {
		return fmt.Errorf("game id must not be empty")
	}

	if p.CreatedAt == 0 {
		return fmt.Errorf("created at must not be empty")
	}

	if p.Body == "" {
		return fmt.Errorf("body must not be empty")
	}

	return nil
}