从 axios 响应 reactjs 填充输入字段

Question

我有简单的领域。 我想根据从 axios 响应中获得的数据填充输入框。 见下图

我正在使用钩子将数据保存到 state。 我的问题是如何在单击获取详细信息按钮（来自 api 的响应）时填充输入框。

见下面的代码

const [data, setData] = useState([])
const [advisoryDetails, setadvisoryDetails] = useState({
    ADVISORYID: '',
    ADVISORYDESC: '',
    CREATEDBY:'',
    MODIFIEDBY:'',
    STATUS1: ''        
})
const [advisoryDetails1, setadvisoryDetails1] = useState([])
const [advisoryID, setadvisoryID] = useState('')

const getAdvisoryTest = async () => {
    await axios.post('/API',advisoryID)
    .then(response => {
        console.log(response.data)
        setData(response.data)
        console.log('data',data)
        setadvisoryDetails1(response.data)
        console.log('advisoryDetails1',advisoryDetails1)
        alert('success')
    })

advisoryDetails1.map(adv => {
        advisoryDetails.ADVISORYID = adv.ADVISORYID;
        advisoryDetails.ADVISORYDESC = adv.ADVISORYDESC;
        advisoryDetails.CREATEDBY = adv.CREATEDBY;
        advisoryDetails.MODIFIEDBY = adv.MODIFIEDBY;
        if(adv.CREATEDBY && adv.MODIFIEDBY != '')
        {
            advisoryDetails.STATUS1 = 'Modified'
        }
        else{ advisoryDetails.STATUS1 = 'New'}

        console.log('populate',advisoryDetails)
    })
}
const txtAdvIdOnChange = e =>{
    setadvisoryID(prevState =>({
        ...prevState,
        'ADVISORYID':e.target.value
    }));
    console.log('onChange ID:',advisoryID)
}
return(
    <div>
        <label>AdvisoryID: </label>
        <input type='text' placeholder='Advisory ID' className='txtAdvisoryID' onChange={txtAdvIdOnChange} />
<button onClick={()=>getAdvisoryTest()}>Get Details</button>
        <br /><br />
<label>Advisory Desc: </label>
        <input type='text' placeholder='textbox1' className='txtAdvisoryDesc' value={advisoryDetails&&advisoryDetails.ADVISORYDESC} disabled/>
        <br/>
        <label>New / Modified: </label>
        <input type='text' placeholder='textbox2' className='txtStatus' value={advisoryDetails&&advisoryDetails.STATUS1} disabled/>
</div>)

在那些代码输入框没有填充，即使在console.log 希望你能帮助我，谢谢。

Answer 1

当您单击获取详细信息按钮时，您的 state 没有更新这是问题（仅当 state 更新时值才会更改，否则不会更新）

//before don't do like this 
advisoryDetails1.map(adv => {
        advisoryDetails.ADVISORYID = adv.ADVISORYID;
        advisoryDetails.ADVISORYDESC = adv.ADVISORYDESC;
        advisoryDetails.CREATEDBY = adv.CREATEDBY;
        advisoryDetails.MODIFIEDBY = adv.MODIFIEDBY;
        if(adv.CREATEDBY && adv.MODIFIEDBY != '')
        {
            advisoryDetails.STATUS1 = 'Modified'
        }
        else{ advisoryDetails.STATUS1 = 'New'}

        console.log('populate',advisoryDetails)
    })





//after(only last element of advisoryDetails1 array was updated in the state)
 advisoryDetails1.forEach(adv => {
    let STATUS1 ='New'
    if(adv.CREATEDBY && adv.MODIFIEDBY != '')
    {
        STATUS1  = 'Modified'
    }
   
     setadvisoryDetails({ADVISORYID : adv.ADVISORYID,
        ADVISORYDESC:adv.ADVISORYDESC,
        CREATEDBY:adv.CREATEDBY,
        MODIFIEDBY:adv.MODIFIEDBY,
       STATUS1:STATUS1 
     })
   })

如果您想查看您的咨询详情 1 数组中的最后一个元素，请执行以下操作

 let adv=advisoryDetails1[advisoryDetails1.length -1];
    let STATUS1 ='New'
    if(adv.CREATEDBY && adv.MODIFIEDBY != '')
    {
        STATUS1  = 'Modified'
    }
   
     setadvisoryDetails({ADVISORYID : adv.ADVISORYID,
        ADVISORYDESC:adv.ADVISORYDESC,
        CREATEDBY:adv.CREATEDBY,
        MODIFIEDBY:adv.MODIFIEDBY,
        STATUS1:STATUS1 
     })
 


 //it update your advisoryDetails state when advisoryDetails1 changed
  useEffect(()=>{
    advisoryDetails1.forEach(adv => {
    let STATUS1 ='New'
    if(adv.CREATEDBY && adv.MODIFIEDBY != '')
    {
        STATUS1  = 'Modified'
    }
   
     setadvisoryDetails({ADVISORYID : adv.ADVISORYID,
        ADVISORYDESC:adv.ADVISORYDESC,
        CREATEDBY:adv.CREATEDBY,
        MODIFIEDBY:adv.MODIFIEDBY,
       STATUS1:STATUS1 
     })
   })
  },[advisoryDetails1]);
//check whether advisoryDetails is changed or not 
      useEffect(()=>{
        console.log('populate',advisoryDetails)
      },[advisoryDetails])

一切都很好，但不像这样只更新了数组的最后一个元素，因此您必须根据您的要求进行一些更改

Answer 2

我认为您可以像下面这样重构您的代码。 我已将 set setadvisoryDetails移至 axios 的axios .then()内，因为您使用的是相同的数据，如果您只想要最后一次迭代的值，则不必通过循环 go 。 并且在输入中，您不必检查advisoryDetails tails 是否存在或具有非空值，因为您已在const [advisoryDetails, setadvisoryDetails] = useState({...})中对其进行了初始化

const App = (props) => {
  const [data, setData] = useState([])
  const [advisoryDetails, setadvisoryDetails] = useState({
    ADVISORYID: '',
    ADVISORYDESC: '',
    CREATEDBY: '',
    MODIFIEDBY: '',
    STATUS1: ''
  })
  const [advisoryDetails1, setadvisoryDetails1] = useState([])
  const [advisoryID, setadvisoryID] = useState('')

  const getAdvisoryTest = () => {
    axios.post('/API', advisoryID)
      .then(response => {
        const respData = response.data;
        setData(respData)
        setadvisoryDetails1(respData)

        console.log({
          respData, data, advisoryDetails1
        });

        alert('success');

        if (respData.length > 0) {
          const adv = respData[respData.length - 1];
          setadvisoryDetails((prevState) => ({
            ...prevState,
            ...adv,
            STATUS1: adv.CREATEDBY && adv.MODIFIEDBY != '' ? 'Modified' : 'New'
          }))
        }

      })
  }

  const txtAdvIdOnChange = e => {
    setadvisoryID(prevState => ({
      ...prevState,
      'ADVISORYID': e.target.value
    }));
    console.log('onChange ID:', advisoryID)
  }

  return (
    <div>
      <label>AdvisoryID: </label>
      <input type='text' placeholder='Advisory ID' className='txtAdvisoryID' onChange={txtAdvIdOnChange} />
      {/* If you're just passing a function without any param or event params, then just pass the function name like a variable */}
      <button onClick={getAdvisoryTest}>Get Details</button>
      <br /><br />
      <label>Advisory Desc: </label>
      <input type='text' placeholder='textbox1' className='txtAdvisoryDesc' value={advisoryDetails.ADVISORYDESC} disabled />
      <br />
      <label>New / Modified: </label>
      <input type='text' placeholder='textbox2' className='txtStatus' value={advisoryDetails.STATUS1} disabled />
    </div>
  );
}

Answer 3

在您的输入值属性上，尝试在&&的任一侧添加一个空格。

<input type='text' placeholder='textbox2' className='txtStatus' value={advisoryDetails.STATUS1 && advisoryDetails.STATUS1} disabled/>