Question

这些是我的领域对象。我有洞和圆。我试图在一次写作中用18洞物体填充我的回合，但过去几个小时我一直坚持这个，我似乎无法理解我哪里出错了。

class Hole extends Realm.Object {}
Hole.schema = {
  name: 'Hole',
  primaryKey:  'id',
  properties: {
    id: 'int',
    fullStroke: 'int',
    halfStroke: 'int',
    puts: 'int',
    firstPutDistance: 'int',
    penalties: 'int',
    fairway: 'string'
  },
};

class Round extends Realm.Object {}
Round.schema = {
  name: 'Round',
  primaryKey: 'id',
  properties: {
    id: 'string',
    done: 'string',
    holes: {type: 'list', objectType: 'Hole'}
  },
};

这是我的函数，试图将每个洞推入Round的hole属性。任何帮助将不胜感激。

exportRound = () => {
  let holesObjects = realm.objects('Hole')
  if(holesObjects.length < 9){
    alert('Enter stats for at least 9 holes please')
  }
  else{
    var sortedHoles = holesObjects.sorted('id')
    currentRound = realm.objects('Round').filtered('done == "no"')
    for(var i = 1; i < holesObjects.length; i++){
      console.log(holesObjects.filtered('id == i'))
      realm.write(()=> currentRound.holes.push(holesObjects.filtered('id == {i}')) )
    }
  }
}

Answer 1

你面临的错误是什么？

我在你的代码中发现了一些错误。

currentRound对象的类型为Results。在检索每个元素之前，它不是Round对象。所以它没有holes属性。您应该检索Results包含的元素，如下所示：

var currentRound = realm.objects('Round').filtered('done == "no"')[0]

字符串插值应为`id == ${i}`（使用反引号和${}）。所以你的查询应该是：

holesObjects.filtered(`id == ${i}`)

holesObjects.filtered(`id == ${i}`)也返回Results个对象。您应该首先检索元素。

realm.write(()=> currentRound.holes.push(holesObjects.filtered(`id == ${i}`)[0]))

我编辑的整个代码如下：

exportRound = () => {
  let holesObjects = realm.objects('Hole')
  console.log(holesObjects);
  if(holesObjects.length < 9){
    alert('Enter stats for at least 9 holes please')
  }
  else{
    var sortedHoles = holesObjects.sorted('id')
    var currentRound = realm.objects('Round').filtered('done == "no"')[0]
    console.log(currentRound)
    for(var i = 1; i < holesObjects.length; i++){
      console.log(holesObjects.filtered(`id == ${i}`))
      realm.write(()=> currentRound.holes.push(holesObjects.filtered(`id == ${i}`)[0]))
    }
  }
}

推动列入领域

1 个答案: