javascript - 条件API调用并在react-select中发送数据

Question

import React, { Component} from 'react';  
import Select from 'react-select';  
import 'react-select/dist/react-select.css';

const partsType = [
    {value: 'front_parts', label: 'Part Condition-Front'},
    {value: 'left_parts', label: 'Part Condition-Left'},
    {value: 'back_parts', label: 'Part Condition-Back'},
    {value: 'right_parts', label: 'Part Condition-Right'},
    {value: 'top_bottom_parts', label: 'Part Condition-Top/Bottom'},
    {value: 'glass', label: 'Glass Condition'},
    {value: 'electrical_parts', label: 'Electrical Parts'},
    {value: 'non_electrical_parts', label: 'Non-Electrical Parts'}
];

const getParts = () => {
    return fetch(
      "http://localhost:4000/left_parts",
      {
          method: 'get'
      }
    )
      .then(response => {
          if(response.status >= 400) {
              throw new Error("error");
          }
          return response.json()
      })
      .then(parts => {
          let partsName = [];
          for(let part of parts) {
              partsName.push({value: part.promptCode, label: part.text})
          }
          return {options: partsName};
      })
      .catch(err => {
          console.log('could not fetch parts');
          console.log(err);
          return {options: []}
      })
};

class Assess extends Component {

    constructor(props) {
        super(props);
        this.state = {
            partsType:'front_parts'        
    };

    this.handlePartsType = this.handlePartsType.bind(this);

    handlePartsType = (item) => {
        this.setState({
            partsType: item.value
        });
    };

    render() {
        return (
            <div>
                <Select
                    clearable={false}
                    searchable={false}
                    value={this.state.partsType}
                    options={partsType}
                    onChange={this.handlePartsType}
                />

                <Select.Async
                    clearable={false}
                    searchable={false}
                    name="PartNamePolygon"
                    value={this.state.PartNamePolygon}
                    onChange={this.PartNamePolygonSelect}
                    loadOptions={getParts}
                />
            </div>
        );
    }
}

我已经提供了片段。我现在正在做的是我做了两个下拉菜单，并且使用第一个下拉菜单的第二个下拉菜单的数据将被更改。现在我不知道如何根据 this.state.partsType 调用不同的 API，因为根据其状态值，其值将在“getParts”中传递。如何实现这一目标？将其值传递给它，以便调用不同的 API

Answer 1

尝试这样

import React, { Component} from 'react';  
        import Select from 'react-select';  
        import 'react-select/dist/react-select.css';

        const partsType = [
            {value: 'front_parts', label: 'Part Condition-Front'},
            {value: 'left_parts', label: 'Part Condition-Left'},
            {value: 'back_parts', label: 'Part Condition-Back'},
            {value: 'right_parts', label: 'Part Condition-Right'},
            {value: 'top_bottom_parts', label: 'Part Condition-Top/Bottom'},
            {value: 'glass', label: 'Glass Condition'},
            {value: 'electrical_parts', label: 'Electrical Parts'},
            {value: 'non_electrical_parts', label: 'Non-Electrical Parts'}
        ];

        const getParts = (type) => {
            return fetch(
              `http://localhost:4000/${type}`,
              {
                  method: 'get'
              }
            )
              .then(response => {
                  if(response.status >= 400){
                  throw new Error("error");
                  }
                  return response.json()
              })
              .then(parts => {
                  let partsName = [];


                  for(let part of parts) {
                  partsName.push({value: part.promptCode, label: part.text})
                  }


                  return {options: partsName};
              })
              .catch(err => {
                  console.log('could not fetch parts');
                  console.log(err);
                  return {options: []}
              })

        };

        class Assess extends Component {

            constructor(props){
            super(props);
            this.state = {
                partsType:'front_parts'

            };

        this.handlePartsType = this.handlePartsType.bind(this);

        handlePartsType = (item) => {
              this.setState({
                  partsType: item.value
              }, getParts(item.value));

              };

        render() {

            return (
            <div>
            <Select
            clearable={false}
            searchable={false}
            value={this.state.partsType}
            options={partsType}
            onChange={this.handlePartsType}
            />

        <Select.Async
                                  clearable={false}
                                  searchable={false}
                                  name="PartNamePolygon"
                                  value={this.state.PartNamePolygon}
                                  onChange={this.PartNamePolygonSelect}
                                  loadOptions={getParts}
                                />

        </div>
            );
          }
        }