反应选择禁用选项

Question

我在禁用 React Select 元素的大型列表中的某些选项时遇到问题。我有大约 6,500 个选项可以加载到选择中。起初我遇到了搜索功能滞后的问题，但后来我开始使用 react-select-fast-filter-options 解决了这个问题。现在的问题是我需要根据 propType “picks”禁用某些选项。代码如下：

import React, {Component} from 'react'
import PropTypes from 'prop-types';
import 'react-select/dist/react-select.css'
import 'react-virtualized/styles.css'
import 'react-virtualized-select/styles.css'
import Select from 'react-virtualized-select'
import createFilterOptions from 'react-select-fast-filter-options';

let options = [];
if(typeof stockSearchStocks !== 'undefined') {
    //loads in all available options from backend by laying down a static js var
    options = stockSearchStocks
}
const filterOptions =  createFilterOptions({options});

class StockSearch extends Component {
    static propTypes = {
        exchanges: PropTypes.array.isRequired,
        onSelectChange: PropTypes.func.isRequired,
        searchDisabled: PropTypes.bool.isRequired,
        picks: PropTypes.array.isRequired,
        stock_edit_to_show: PropTypes.number
    }

    /**
     * Component Bridge Function
     * @param stock_id stocks id in the database
     */
    stockSearchChange = (stock_id) => {
        this.props.onSelectChange(stock_id);
    }

     //this is my current attempt to at least 
     //disable options on component mount but this doesn't seem to be working
    componentWillMount = () => {
        console.log('picks!: ' + JSON.stringify(this.props.picks));
        let pickIDs = this.props.picks.map((p) => p.stock_id);
        options = options.map((o) => {
            // console.log(pickIDs.indexOf(o.value));
            if(pickIDs.indexOf(o.value)) {
                // console.log('here is the option: ' + JSON.stringify(o));
                // console.log('here is the option: ' + o.disabled);
                o.disabled = true;
            }
        })

    }

    /**
     * handles selected option from the stock select
     * @param selectedOption
     */
    handleSelect = (selectedOption) => {
        this.stockSearchChange(selectedOption.value);
    }

    render() {
        return (
            <div className="stock-search-container">
                <Select
                    name="stock-search"
                    options={options}
                    placeholder="Type or select a stock here..."
                    onChange={this.handleSelect}
                    disabled={this.props.searchDisabled}
                    value={this.props.stock_edit_to_show}
                    filterOptions={filterOptions}
                />
            </div>
        )
    }
}

export default StockSearch;

我已尝试通过 pick 道具进行过滤并将该选项变量更改为包含 disabled:true 但这会滞后于应用程序，并且我不确定这是否会起作用，因为我正在使用 react-select-fast-filter-选项，因为它似乎在做某种索引。有没有办法过滤 options var 以找到 picks 道具的所有实例并快速禁用这些选项？

Answer 1

isDisabled={this.props.disabled}

你传递了一个错误的道具。对于 v2，道具是禁用的。

https://github.com/JedWatson/react-select/issues/145

Answer 2

在 react-select v2 中：

1. 在您的选项数组中添加一个属性 'disabled': 'yes'（或任何其他对来识别禁用选项）

2. 使用 react-select 组件的 isOptionDisabled 属性根据 'disabled' 属性过滤选项

这是一个例子：

import Select from 'react-select';

const options = [
  {label: "one", value: 1, disabled: true},
  {label: "two", value: 2}
]

render() {

 <Select id={'dropdown'}
         options={options}
         isOptionDisabled={(option) => option.disabled}>
 </Select>

}

有关 react-select 道具的更多信息在 docs 中，这是他们引用的 example。

Answer 3

使用以下命令禁用选项。

import Select from 'react-select';

render() {
  const options = [
    {label: "a", value: "a", isDisabled: true},
    {label: "b", value: "b"}
  ];

  return (
    <Select
      name="myselect"
      options={options}
    </Select>
  )
}

Answer 4

人们正在把它变成一个 JavaScript 问题。我说让它成为一个 CSS 并简化。 使用这个

style={{display: month === '2' ? 'none' : 'block'}} 

像这样... 二月只有28天

const ComponentName =() => {

  const [month, setMonth] = useState("")
  const [day, setDay] = useState("")


return (
<>
<select 
onChange={(e) => {
    const selectedMonth = e.target.value;
    setMonth(selectedMonth)> 
   <option selected disabled>Month</option>
   <option value= '1'>January</option>
   <option value= '2'>February</option>
</select>

<select
onChange={(e) => {
    const selectedDay = e.target.value;
    setDay(selectedDay)> 
   <option selected disabled>Day</option>
   <option value= '28'>28</option>
   <option value= '29' style={{display: month === '2' ? 'none' : 'block'}}>29</option>
   <option value= '30'>30</option>
</select>

</>
)

}

export default ComponentName;