Question

我有这个数组

  air_content: '',
  compaction_method: 1,
  concrete_cylinders: [
    {
      id: '',
      specimen_name: 'A',
      mould_number: '',
      curing: 1,
      age: 7
    },
    {
      id: '',
      specimen_name: 'A',
      mould_number: '',
      curing: 1,
      age: 7
    },
    {
      id: '',
      specimen_name: 'A',
      mould_number: '',
      curing: 1,
      age: 7
    }
  ]

发布数据时，我试图解析它们（formik将其修改回文本，因此我需要将其解析为int的后端）

我的帖子看起来像这样（除了嵌套对象，我也希望它们也解析为整数）

axios.post('http://localhost:8123/samples/concrete', {
  air_content: parseFloat(air_content),
  compaction_method: parseInt(compaction_method),
  concrete_cylinders
});

伪指令/我尝试做的代码的最佳尝试是以下

   axios.post('http://localhost:8123/samples/concrete', {
      air_content: parseFloat(air_content),
      compaction_method: parseInt(compaction_method),
      concrete_cylinders: {
        [concrete_cylinders.id]: parseInt(concrete_cylinders.id),
        [concrete_cylinders.curing]: parseInt(concrete_cylinders.curing)
      }
    });

谢谢您的帮助

Answer 1

在致电axios.post之前，您需要

concrete_cylinders.forEach(x => {
    x.id = parseInt(x.id);
    x.curing = parseInt(c.curing);
});

或者，如果您真的想要，您可以这样做

axios.post('http://localhost:8123/samples/concrete', {
  air_content: parseFloat(air_content),
  compaction_method: parseInt(compaction_method),
  concrete_cylinders: concrete_cylinders.map(x => {
    x.id = parseInt(x.id);
    x.curing = parseInt(c.curing);
    return x;
  });
});

Answer 2

以下是使用较新的spread syntax的版本：

const concrete_cylinders = [
  {
    id: '',
    specimen_name: 'A',
    mould_number: '',
    curing: '1',
    age: '7'
  },
  {
    id: '',
    specimen_name: 'A',
    mould_number: '',
    curing: '1',
    age: '7'
  },
  {
    id: '',
    specimen_name: 'A',
    mould_number: '',
    curing: '1',
    age: '7'
  }
]

const result = concrete_cylinders.map(o => ({
  ...o,
  ...{
    curing: parseInt(o.curing),
    age: parseInt(o.age)
  }
}));

console.log(result);

Answer 3

您始终可以在发布前尝试在阵列上使用forEach。例如...

pojo = {
  air_content: '',
  compaction_method: 1,
  concrete_cylinders: [
    {
      id: '3',
      specimen_name: 'A',
      mould_number: '',
      curing: '1',
      age: 7
    },
    {
      id: '3',
      specimen_name: 'A',
      mould_number: '',
      curing: '1',
      age: 7
    },
    {
      id: '3',
      specimen_name: 'A',
      mould_number: '',
      curing: '1',
      age: 7
    }
  ]
}

pojo.concrete_cylinders.forEach(e => {
  e.id = parseFloat(e.id)
  e.curing = parseInt(e.curing)
//...anything else you want to change before posting
})

然后将对象传递到您的axios.post

axios.post('http://localhost:8123/samples/concrete', pojo);

我敢肯定有一种方法可以减少行数，但这应该可以解决您的问题。

解析嵌套的javascript数组

3 个答案: