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Rails 5.2应用程序记录的JSON序列化不正确

json-serialization ruby-on-rails mysql

0

t0il3ts0ap · 技术社区 · 7 年前

模型

class PushNotificationRequest < ApplicationRecord
  serialize :details

迁移

class CreateNotificationRequests < ActiveRecord::Migration[5.2]
  def change
    create_table :notification_requests do |t|
      t.references :order, references: :spree_orders, index: false
      t.string :key                             
      t.json :details                           
      t.string :type
      t.timestamps
    end
  end
end

在控制台上创建数据

PushNotificationRequest.create(order: Spree::Order.last, details: {a: 2})

MySQL怪异存储

mysql> select * from notification_requests;
+----+----------+------+----------------+-------------------------+-----------+---------------------+---------------------+
| id | order_id | key  | details        | type                    | status    | created_at          | updated_at          |
+----+----------+------+----------------+-------------------------+-----------+---------------------+---------------------+
|  7 |       19 | NULL | "---\n:a: 2\n" | PushNotificationRequest | INITIATED | 2019-01-09 13:45:40 | 2019-01-09 13:45:40 |
+----+----------+------+----------------+-------------------------+-----------+---------------------+---------------------+

这个 details 列存储为一些奇怪的字符串,而不是正确的JSON 我使用的是MySQL8.0.12和Rails 5.12

我有什么东西不见了吗?

2 回复 | 直到 7 年前

1

0

bo-oz 7 年前

我认为在这种情况下,您需要定义将属性具体序列化为JSON:

class PushNotificationRequest < ApplicationRecord
  serialize :details, JSON

你确定mysql可以存储json吗?(我只对PostgreSQL有经验)

2

0

t0il3ts0ap 7 年前

根据文件 Keep in mind that database adapters handle certain serialization tasks for you. For instance: json and jsonb types in PostgreSQL will be converted between JSON object/array syntax and Ruby Hash or Array objects transparently. There is no need to use serialize in this case.

serialize :details 不是必需的,正在以某种方式破坏序列化。删除后,在mysql中得到了正确的json。