如何基於REACT中的文本輸入從API搜索

Question

當我基於關鍵字從API搜索時，我會獲得API中的所有詳細信息。 我只需要根據搜索輸入的文本獲得詳細信息。我不知道問題出在我的API或我的代碼中……請幫助我。

import React, { Component } from 'react';

class Search extends Component {
    constructor(props) {
        super(props);
        this.state={
            value:'',
            value2:''                                                                                                           
        };
    this.handleChange=this.handleChange.bind(this);
    this.crimeChange=this.crimeChange.bind(this);
    this.search=this.search.bind(this);

    }
    handleChange(event){
        this.setState({value:event.target.value});
    }

    crimeChange(event) {
        this.setState({value2:event.target.value});
    }
    search(){
        let {value, value2 } =this.state;
        const url=`https://api.myjson.com/bins/e69i9/?i=${value}&q=${value2}`;

        fetch(url,{
            method:'GET'
        }).then(response => response.json())
        .then(json =>console.log('details',json));
    }

    render() {
        return (
            <div>
                <form >
                    <div className="row">
                        <div className="col-md-4">

                            <select value={this.state.value} onChange={this.handleChange} className="form-control" placeholder="police station">
                            <option selected>Choose...</option>
                                <option value="areacode">Areacode</option>
                                <option value="changaramkulam">Changaramkulam</option>
                                <option value="edakkara">Edakkara</option>
                                <option value="edavanna">Edavanna</option>
                                <option value="kadampuzha">Kadampuzha</option>
                                <option value="kalikavu">Kalikavu</option>
                                <option value="kalpakanchery">Kalpakanchery</option>
                                <option value="karipur">Karipur</option>
                                <option value="karuvarakundu">Karuvarakundu</option>
                                <option value="kolathur">Kolathur</option>
                                <option value="kondotty">Kondotty</option>
                                <option value="kottakkal">Kottakkal</option>
                                <option value="kuttippuram">Kuttippuram</option>
                                <option value="malappuram">Malappuram</option>
                                <option value="manjeri">Manjeri</option>
                                <option value="mankada">Mankada</option>
                                <option value="melattur">Melattur</option>
                                <option value="nilambur">Nilambur</option>
                                <option value="pandikkad">Pandikkad</option>
                                <option value="parapanangadi">Parapanangadi</option>
                                <option value="perinthalmanna">Perinthalmanna</option>
                                <option value="perumpadappu">Perumpadappu</option>
                                <option value="ponnani">Ponnani</option>
                                <option value="pookottumpadam">Pookkottumpadam</option>
                                <option value="pothukkal">Pothukkal</option>
                                <option value="thanur">Thanur</option>
                                <option value="thenhipalam">Thenhipalam</option>
                                <option value="thirurangadi">Thirurangadi</option>
                                <option value="tirur">Tirur</option>
                                <option value="valanchery">Valanchery</option>
                                <option value="vazhakad">Vazhakad</option>
                                <option value="vazhikadavu">Vazhikadavu</option>
                                <option value="vengara">Vengara</option>
                                <option value="vandoor">Vandoor</option>
                            </select>
                        </div>
                        <div className="col-md-4">
                            <div className="form-group is-empty">
                                <input type="number" placeholder="Crime Number" className="form-control" value={this.state.value2} onChange={this.crimeChange}/>
                                <span className="material-input"></span></div>
                        </div>

                        <div className="col-md-4">
                            <button type="button" 
                            className="btn btn-primary btn-block"
                            onClick={()=> this.search()}
                            >Search</button>
                        </div>
                    </div>
                </form>
            </div>
        )
    }
}
export default Search;

這是我的api數據

// 20180312234820 // https://api.myjson.com/bins/e69i9/

[
  {
    "id": 1,
    "police station": "perinthalmanna",
    "crime number": 97,
    "details": {
      "image": "http: //asianetindia.com/wp-content/uploads/2013/09/jayanandan.jpg",
      "name": "john",
      "section of law": "IPC200",
      "type of person": "missed"
    }
  },
  {
    "id": 2,
    "police station": "tirur",
    "crime number": 98,
    "details": {
      "image": "https: //themmindset.files.wordpress.com/2010/10/chota-shakeel.jpg",
      "name": "mohan",
      "section of law": "Ipc407",
      "type of person": "suspects"
    }
  },
  {
    "id": 3,
    "police station3": "ponnani",
    "crime number": 99,
    "details": {
      "image": "https://themmindset.files.wordpress.com/2010/10/mukhtar_ansari.jpg",
      "name": "rooney",
      "section of law": "ipc207",
      "type of person": "criminals"
    }
  },
  {
    "id": 4,
    "police station": "kolathur",
    "crime number": 100,
    "details": {
      "image": "https://themmindset.files.wordpress.com/2011/04/abu_salem.jpg",
      "name": "tipper vasu",
      "section of law": "Ipc408",
      "type of person": "missed"
    }
  },
  {
    "id": 5,
    "police station": "kottakkal",
    "crime number": 101,
    "details": {
      "image": "https://themmindset.files.wordpress.com/2011/04/abu_salem.jpg",
      "name": "killer",
      "section of law": "Ipc402",
      "type of person": "suspected"
    }
  }
]

這個概念是...如果我選擇一個警察局和犯罪編號，那么將從API中獲得基於該名稱的詳細信息...

請幫我..

Answer 1

這是允許從響應中多次過濾數據的工作代碼。結果顯示在控制台中。

 class TestJS extends React.Component { constructor(props) { super(props); this.state={ value:'', value2:'', resultFound : false, filteredData : "" }; this.handleChange=this.handleChange.bind(this); this.crimeChange=this.crimeChange.bind(this); this.search=this.search.bind(this); this.multiFilter=this.multiFilter.bind(this); } multiFilter(array, filters) { const filterKeys = Object.keys(filters); // filters all elements passing the criteria return array.filter((item) => { // dynamically validate all filter criteria return filterKeys.every(key => !!~filters[key].indexOf(item[key])); }); } handleChange(event){ this.setState({value:event.target.value}); } crimeChange(event) { this.setState({value2:event.target.value}); } search(){ let _this = this; let {value, value2 } =this.state; const url=`https://api.myjson.com/bins/e69i9/?i=${value}&q=${value2}`; fetch(url,{ method:'GET' }).then(response => response.json()) .then(function(data){ console.log(data, value, value2); let filters = { "police station" : [value], "crime number" : [parseInt(value2)] }; let filtered = _this.multiFilter(data, filters); console.log(filtered); if(filtered.length <= 0){ _this.setState({resultFound : false}) } else{ _this.setState({filteredData : filtered, resultFound : true}) } }); } render() { return ( <div> <form > <div className="row"> <div className="col-md-4"> <select value={this.state.value} onChange={this.handleChange} className="form-control" placeholder="police station"> <option selected>Choose...</option> <option value="areacode">Areacode</option> <option value="changaramkulam">Changaramkulam</option> <option value="edakkara">Edakkara</option> <option value="edavanna">Edavanna</option> <option value="kadampuzha">Kadampuzha</option> <option value="kalikavu">Kalikavu</option> <option value="kalpakanchery">Kalpakanchery</option> <option value="karipur">Karipur</option> <option value="karuvarakundu">Karuvarakundu</option> <option value="kolathur">Kolathur</option> <option value="kondotty">Kondotty</option> <option value="kottakkal">Kottakkal</option> <option value="kuttippuram">Kuttippuram</option> <option value="malappuram">Malappuram</option> <option value="manjeri">Manjeri</option> <option value="mankada">Mankada</option> <option value="melattur">Melattur</option> <option value="nilambur">Nilambur</option> <option value="pandikkad">Pandikkad</option> <option value="parapanangadi">Parapanangadi</option> <option value="perinthalmanna">Perinthalmanna</option> <option value="perumpadappu">Perumpadappu</option> <option value="ponnani">Ponnani</option> <option value="pookottumpadam">Pookkottumpadam</option> <option value="pothukkal">Pothukkal</option> <option value="thanur">Thanur</option> <option value="thenhipalam">Thenhipalam</option> <option value="thirurangadi">Thirurangadi</option> <option value="tirur">Tirur</option> <option value="valanchery">Valanchery</option> <option value="vazhakad">Vazhakad</option> <option value="vazhikadavu">Vazhikadavu</option> <option value="vengara">Vengara</option> <option value="vandoor">Vandoor</option> </select> </div> <div className="col-md-4"> <div className="form-group is-empty"> <input type="number" placeholder="Crime Number" className="form-control" value={this.state.value2} onChange={this.crimeChange}/> <span className="material-input"></span></div> </div> <div className="col-md-4"> <button type="button" className="btn btn-primary btn-block" onClick={()=> this.search()} >Search</button> </div> {!this.state.resultFound ? <div> No Data Found!!</div> : JSON.stringify(this.state.filteredData)} </div> </form> </div> ) } } export default TestJS;