Question

我正在开发一个react本机应用程序，作为项目的一部分，我正在使用Ruby on Rails 5在API Only模式下使用ActiveAdmin为管理界面构建API。我有一切设置，而且一切运作良好。

在获得API的想法之前，我获得了一个文件中的数据，我需要使用rails复制其结构，因此它可以是内容可管理的。

但我似乎无法使主动记录关联正确。

这是数据文件的示例......

{
    name: 'Scottish Stoics',
    days: [
      {
        day: 'Monday',
        meeting: [
          {
            name: 'Meeting one',
            location: 'Test',
            startTime: '11.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting two',
            location: 'Test',
            startTime: '10.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting three',
            location: 'Test',
            startTime: '10.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
        ],
      },
      {
        day: 'Tuesday',
        meeting: [
          {
            name: 'Meeting one',
            location: 'Test',
            startTime: '10',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting two',
            location: 'Test',
            startTime: '10',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting three',
            location: 'Test',
            startTime: '10',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
        ],
      },
    ],
  },
  {
    name: 'Scottish Cycling Group',
    days: [
      {
        day: 'Sunday',
        meeting: [
          {
            name: 'Meeting one',
            location: 'Test',
            startTime: '11.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting two',
            location: 'Test',
            startTime: '10.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting three',
            location: 'Test',
            startTime: '10.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
        ],
      },
      {
        day: 'Tuesday',
        meeting: [
          {
            name: 'Meeting one',
            location: 'Test',
            startTime: '10.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting two',
            location: 'Test',
            startTime: '10.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
          {
            name: 'Meeting three',
            location: 'Test',
            startTime: '10.00',
            address: 'Test Street',
            meetingLength: '1 Hour',
            city: 'Edinburgh',
          },
        ],
      },
    ],
  }

我有一个群组模型，日模型和会议模型。

组

 belongs_to :day
 belongs_to :meeting

会议

has_many :groups

日期

has_many :groups

我得到了这个结果。

[
    {
        id: 1,
        name: "Scottish Stoics",
        created_at: "2018-03-19T11:47:50.818Z",
        updated_at: "2018-04-12T10:50:05.179Z",
        day_id: 7,
        meeting_id: 81
    },
    {
        id: 2,
        name: "Scottish Cycling Group",
        created_at: "2018-03-19T11:47:57.498Z",
        updated_at: "2018-04-11T22:13:26.656Z",
        day_id: 7,
        meeting_id: 83
    },
]

现在我可以使用jbuilder来获取日期名称和会议名称，这很好，但我不能做的是选择一天的多次会议，以及为小组选择多天。这种数据结构在Rails中是否可行？

如果我应该使用不同类型的关联，我无法解决问题，任何人都可以为我阐明这一点吗？

Answer 1

假设顶级嵌套对应组，您可以形成如下关联：

日期

has_many :meetings belongs_to :group

<强>会议

belongs_to :day

<强>组

has_many :days has_many :meetings, through: :days

虽然我的印象是在JSON中提供它应该是meetings而不是meeting来保持RESTful

Ruby on Rails 5，Active Record Associations，仅限API

1 个答案: