在“`thinky`”模式验证中允许数组中的“未定义”值

Question

模式如下所示：

import Game from './Game'
import {io, thinky} from '../'

const type = thinky.type


export const playerSchema = {
  id: type.string(),
  createdAt: type.date().default(thinky.r.now()),
  modifiedAt: type.date(),
  gameId: type.string(),
  name: type.string().default('Anon'),
  socket: type.string(),
  disconnected: type.boolean().default(false),
  levels: type.array().schema(type.object().schema({
    rounds: type.array().schema({
      card: type.number(),
      readyForNext: type.boolean().default(false),
      readyForNextTime: type.date(),
      tries: type.array().schema({
        answer: type.any(),
        correct: type.boolean(),
        startTime: type.date(),
        hasAnswered: type.boolean().default(false),
        hasAnsweredTime: type.date().default(null),
        hasClickedRetry: type.boolean().default(false),
        hasClickedRetryTime: type.date()
      }).default([])
    }).default([])
  })).default([])
}

当我试图保存一个级别有undefined值的播放器时，我得到：

“undefined**"**”“无法读取的属性”

进一步解释：有时玩家会进入游戏后，第一级已经完成了其他玩家。因此，我希望数组中这个索引的值保持undefined。

示例数据( YAML)：

id: 1337
...
levels:
-
- rounds:
  - ...
    tries:
    - answer: [2, 4]
      ...

如果我将playerSchema.levels更改为type.array()，就会得到：

“数组undefined**"**中的元素不能是 levels

在评论后编辑：

即使在默认情况下这也不起作用..。

var thinky = require('thinky')({
  db: 'slam'
})
var type = thinky.type
var r = thinky.r


var playerSchema = {
  id: type.string(),
  createdAt: type.date().default(thinky.r.now()),
  modifiedAt: type.date(),
  gameId: type.string(),
  name: type.string().default('Anon'),
  socket: type.string(),
  disconnected: type.boolean().default(false),
  levels: type.array().schema(type.object().schema({
    rounds: type.array().schema(type.object().schema({
      card: type.number(),
      readyForNext: type.boolean().default(false),
      readyForNextTime: type.date(),
      tries: type.array().schema(type.object().schema({
        answer: type.any(),
        correct: type.boolean(),
        startTime: type.date(),
        hasAnswered: type.boolean().default(false),
        hasAnsweredTime: type.date().default(null),
        hasClickedRetry: type.boolean().default(false),
        hasClickedRetryTime: type.date()
      }).default({})).default([])
    }).default({})).default([])
  }).default({})).default([])
}

var Player = thinky.createModel('Player', playerSchema)

var player = new Player({
  levels: [undefined, {}]
})

player.save().then(console.log)

结果..。

/Users/arnar/git/slam-web-app/app/node_modules/thinky/lib/schema.js:92
      field = field[path[j]];
                   ^

TypeError: Cannot read property 'rounds' of undefined
    at generateDefault (/Users/arnar/git/slam-web-app/app/node_modules/thinky/lib/schema.js:92:20)
    at Object.generateDefault (/Users/arnar/git/slam-web-app/app/node_modules/thinky/lib/schema.js:86:11)
    at model.Document._generateDefault (/Users/arnar/git/slam-web-app/app/node_modules/thinky/lib/document.js:172:16)
    at new model (/Users/arnar/git/slam-web-app/app/node_modules/thinky/lib/model.js:131:11)
    at Object.<anonymous> (/Users/arnar/git/slam-web-app/app/tests/test-player-schema.js:36:14)
    at Module._compile (module.js:434:26)
    at Object.Module._extensions..js (module.js:452:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Function.Module.runMain (module.js:475:10)
    at startup (node.js:117:18)
    at node.js:951:3

我甚至试图创建一个pre validation hook，但这没有任何影响

Player.pre('validate', function(next) {
  this.levels = this.levels.map(function(l) {
    return l != null ? l : {}
  })
  next()
})

Answer 1

编辑跟进您的评论。这是您想要的(基本上需要数组模式定义中的默认值({})：

var thinky = require('./lib/thinky.js')();
var type = thinky.type;
var r = thinky.r;


var Player = thinky.createModel('Player', {
  id: type.string(),
  levels: type.array().schema(type.object().schema({
    rounds: type.array().schema(type.object({
      card: type.number(),
      readyForNext: type.boolean().default(false),
      readyForNextTime: type.date(),
      tries: type.array().schema({
        answer: type.any(),
        correct: type.boolean(),
        startTime: type.date(),
        hasAnswered: type.boolean().default(false),
        hasAnsweredTime: type.date().default(null),
        hasClickedRetry: type.boolean().default(false),
        hasClickedRetryTime: type.date()
      }).default({})
    }).default({})).default([])
  })).default([])
})

var player = new Player({
  levels: [{}] 
});

player.save().then(console.log);

“思考”一书的作者。这对我来说很管用：

var thinky = require('./lib/thinky.js')();
var type = thinky.type;
var r = thinky.r;


var Player = thinky.createModel('Player', {
  id: type.string(),
  levels: type.array().schema(type.object().schema({
    rounds: type.array().schema({
      card: type.number(),
      readyForNext: type.boolean().default(false),
      readyForNextTime: type.date(),
      tries: type.array().schema({
        answer: type.any(),
        correct: type.boolean(),
        startTime: type.date(),
        hasAnswered: type.boolean().default(false),
        hasAnsweredTime: type.date().default(null),
        hasClickedRetry: type.boolean().default(false),
        hasClickedRetryTime: type.date()
      }).default([])
    }).default({})
  })).default([])
})

var player = new Player({
  levels: undefined
});

player.save().then(console.log);

另外，您可能希望用default([])替换一个default({})，因为您正在设置一个类型对象。