在 ReactJs 中将道具传递给模态

Question

我实际上是在开发我的第一个 React 应用程序。这是一个 collection 应用程序。在这个应用程序上，有一个管理仪表板，包含应用程序的所有项目，管理员用户可以删除或修改项目（就像传统的 e-commerce 后台）。对于修改项目，管理员用户单击按钮 "Modify Item"，然后打开一个用于修改项目信息的模式。

我的问题是当用户打开模态时，模态工作正常，但我无法传递所选项目的信息（如品牌名称、参考、价格...）。很抱歉在同一天再次提出问题，但我尝试了很多事情但没有结果。非常欢迎提供一点帮助。

提前谢谢你，

这是我的代码：

import React, { Component } from 'react';
import { database } from '../firebase/firebase';
import * as firebase from 'firebase';
import withAuthorization from './withAuthorization';
import _ from 'lodash';
import AuthUserContext from './AuthUserContext';
import FileUploader from "react-firebase-file-uploader";
import Image from 'react-image-resizer';
import{InstantSearch, SearchBox, Hits, Highlight, RefinementList} from "react-instantsearch/dom";
import Modal from 'react-responsive-modal';



function removeToCatalogue(hit) { 
  const item = hit.objectID;
    firebase.database().ref(`catalogue/${item}`).remove();
    console.log("Capsule correctement supprimée du catalogue")
}




const Hit = ({hit, onEdit}) =>
    <div className="item">
       <img src={hit.avatarURL} width={150} height={150}></img>
        <h1 className="marque">{hit.marque}</h1>
        <h3 className="numero">{hit.numero}</h3>
        <h4 className="reference">{hit.reference}</h4>
        <h4 className="marquesuite">{hit.marquesuite}</h4>
        <p className="cote">{hit.cote}</p>
        <button className="btn btn-warning" onClick={onEdit}>Modify Item</button>
        <button className="btn btn-danger" onClick={() => removeToCatalogue(hit)}>Supprimer</button> 
    </div>

  const Content = ({ onEdit }) => {

    const EnhancedHit = props =>
       <Hit onEdit={ onEdit } { ...props } />

    return (
      <div className="text-center">  
        <Hits hitComponent={ EnhancedHit } />
      </div>
    )
  }




class Admin extends React.Component {
  constructor (props) {
    super (props);

    this.state = {
      marque: '',
      marquesuite: '',
      numero: '',
      reference: '',
      cote: '',
      avatar: "",
      isUploading: false,
      progress: 0,
      avatarURL: "",
      catalogue: {},
      showModal: false,

    };
    this.onInputChange = this.onInputChange.bind(this);
    this.onHandleSubmit = this.onHandleSubmit.bind(this);

  }


  onOpenModal = () => {
    this.setState({ open: true });
  };

  onCloseModal = () => {
    this.setState({ open: false });
  };


  onInputChange(e) {
    this.setState({
      [e.target.name]: e.target.value
    });
  }

  onHandleSubmit(e){
    e.preventDefault();
    const catalogue = {
      marque: this.state.marque,
      marquesuite: this.state.marquesuite,
      numero: this.state.numero,
      reference: this.state.reference,
      cote: this.state.cote,
      avatar: this.state.avatar,
      avatarURL: this.state.avatarURL,

    };
    database.push(catalogue);
    this.setState({
      marque: '',
      marquesuite: '',
      numero: '',
      reference: '',
      cote: '',
      avatar: "",
      isUploading: false,
      progress: 0,
      avatarURL: "",
    });
  }

  handleUploadStart = () => this.setState({ isUploading: true, progress: 0 });
  handleProgress = progress => this.setState({ progress });
  handleUploadError = error => {
    this.setState({ isUploading: false });
    console.error(error);
  };

  handleUploadSuccess = filename => {
    this.setState({ avatar: filename, progress: 100, isUploading: false });
    firebase
      .storage()
      .ref("images")
      .child(filename)
      .getDownloadURL()
      .then(url => this.setState({ avatarURL: url }));
  };


  render (){
    const { open } = this.state;
    return (
      <div className="container-fluid">
        <div className="container">
        <h1 class="text-center">Espace d'Administration</h1>
        <a href="https://super-capsule.000webhostapp.com/signaler-modification" class="btn btn-primary btn-lg active" role="button" aria-disabled="true">Signaler une modification</a>
        <form onSubmit={this.onHandleSubmit}>
          <div className="form-group">
          <label>Marque de la capsule:</label>
          <input
            value={this.state.marque}
            type="text"
            name='marque'
            placeholder="Marque"
            onChange={this.onInputChange}
            ref="marque"
            className="form-control" />
          </div>
          <div>
          <label>Numéro de la capsule:</label>
          <input
            value={this.state.numero}
            type="text"
            name='numero'
            placeholder="Numéro de la capsule"
            onChange={this.onInputChange}
            ref="numero"
            className="form-control"/>
          </div>
          <div className="form-group">
          <label>Référence de la capsule:</label>
          <input
            value={this.state.marquesuite}
            type="text"
            name='marquesuite'
            placeholder="Référence de la capsule"
            onChange={this.onInputChange}
            ref="marquesuite"
            className="form-control"/>
          </div>
          <div className="form-group">
          <label>Référence de la capsule (suite):</label>
          <input
            value={this.state.reference}
            type="text"
            name='reference'
            placeholder="Référence de la capsule (suite)"
            onChange={this.onInputChange}
            ref="reference"
            className="form-control"/>
          </div>
          <div className="form-group">
          <label>Cote de la capsule:</label>
          <input
            value={this.state.cote}
            type="text"
            name='cote'
            placeholder="Cote de la capsule"
            onChange={this.onInputChange}
            ref="cote"
            className="form-control"/>
          </div>

          <label>Visuel de la capsule:</label>
          {this.state.isUploading && <p>Progress: {this.state.progress}</p>}
          {this.state.avatarURL && <img src={this.state.avatarURL} />}
          <FileUploader
            accept="image/*"
            name="avatar"
            randomizeFilename
            storageRef={firebase.storage().ref("images")}
            onUploadStart={this.handleUploadStart}
            onUploadError={this.handleUploadError}
            onUploadSuccess={this.handleUploadSuccess}
            onProgress={this.handleProgress}
          />
          <button className="btn btn-info">Ajouter une capsule</button>
        </form>
      </div>

        <h1 className="text-center">Catalogue de capsule</h1>



        <InstantSearch
            apiKey="xxx"
            appId="xxx"
            indexName="xxx">


            <SearchBox translations={{placeholder:'Rechercher une capsule'}} width="500 px"/>


            <Content onEdit={this.onOpenModal}/>  

              <div>
                <Modal open={open} onClose={this.onCloseModal} center>
                  <h2>Modification de la capsule</h2>
                  <p>Marque de la capsule:<input type="text" class="form-control" id="maj-marque" value=""></input></p>
                  <p>Numéro de la capsule:<input type="text" class="form-control" id="maj-num" value=""></input></p>
                  <p>Référence de la capsule:<input type="text" class="form-control" id="maj-ref" value=""></input></p>
                  <p>Référence de la capsule (suite):<input type="text" class="form-control" id="maj-refsuite" value=""></input></p>
                  <p>Cote de la capsule:<input type="text" class="form-control" id="maj-cote" value=""></input></p>
                  <button className="btn btn-success">Update</button>

                </Modal>
            </div>  


          </InstantSearch>



      </div>
    )
  }
}



const authCondition = (authUser) => !!authUser;

export default withAuthorization(authCondition)(Admin);

Answer 1

您不需要将 props 传递给 Modal 组件。相反，保存任何你想在 Admin 状态下显示的内容，然后通过那里渲染它。

在 Hit 组件中，onEdit 函数应采用一个参数，该参数是一个对象，其中包含您在模态中需要的所有信息。您之前 <button className="btn btn-warning" onClick={onEdit}>Modify Item</button> 的位置将变为：

    handleClick = () => {
        // I simplified the data you need to be only marque and numero here and below.
        onEdit({marque: hit.marque, numero: hit.numero})
    }
    <button className="btn btn-warning" onClick={handleClick}>Modify Item</button>

然后在Admin组件中：

    onOpenModal = (itemData) => {
        this.setState({ open: true, itemData  });
    };


    <Modal open={open} onClose={this.onCloseModal} center>
          <h2>Modification de la capsule</h2>
          <p>Marque de la capsule:<input type="text" class="form-control" id="maj-marque" value={this.state.itemData.marque}></input></p>
          <p>Numéro de la capsule:<input type="text" class="form-control" id="maj-num" value={this.state.itemData.numero}></input></p>
          <button className="btn btn-success">Update</button>
    </Modal>

希望这对您有所帮助。如果您有任何问题，请告诉我。

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