我有三個型號，項目轉讓和類別（又名項目類型）： class Item < ApplicationRecord
belongs_to :category
has_many :transfers
end
class Transfer < ApplicationRecord
belongs_to :item
end
class Category < Applic
下面的代碼返回兩個級聯的JSON字符串和一個錯誤的內容類型text/plain。應該是application/vnd.api+json package main
import (
"github.com/google/jsonapi"
"github.com/labstack/echo"
"net/http"
)
type Album struct {