如何在ReactJS中执行下拉列表状态的突变?
当我的下拉列表中选择了一个项目,但出现了一个错误,如果不再次单击,该错误不会改变,我想更改状态 我知道有相关的问题,但我的代码是一个特殊的情况 同样的事情也发生在我身上,就像这张有两个下拉框的图片一样 我更改了“Mes”,但它在您返回并选择另一个值之前不起作用。在那里,我刚改为“第四个月”如何在ReactJS中执行下拉列表状态的突变?,reactjs,react-native,react-redux,graphql,Reactjs,React Native,React Redux,Graphql,当我的下拉列表中选择了一个项目,但出现了一个错误,如果不再次单击,该错误不会改变,我想更改状态 我知道有相关的问题,但我的代码是一个特殊的情况 同样的事情也发生在我身上,就像这张有两个下拉框的图片一样 我更改了“Mes”,但它在您返回并选择另一个值之前不起作用。在那里,我刚改为“第四个月” import React,{Component}来自'React'; 从“道具类型”导入道具类型; 从“日期fns/格式”导入格式; 从“graphql标签”导入gql; 从'@fortawesome/
import React,{Component}来自'React';
从“道具类型”导入道具类型;
从“日期fns/格式”导入格式;
从“graphql标签”导入gql;
从'@fortawesome/react fontawesome'导入{FontAwesomeIcon};
从'react router dom'导入{Link};
从'react apollo'导入{graphql};
导入“../../node_modules/bootstrap/dist/css/bootstrap.css”;
导入“/style.css”;
进口{
扣子放下,
下拉开关,
下拉菜单,
下拉项,
}来自“反应带”;
从“axios”导入axios;
从“../TituloSmall”导入TituloSmall,{types};
常量query0=gql`
查询postsdiacomoy($dia:Int!,$mes:Int!){
职位(第一名:2名,助理:助理,助理:助理,助理:助理,类别:28名){
排{
身份证件
费查迪亚霍伊酒店
图像介绍
提特罗
内文
自动
全文索引
全文2
伊曼纽旗
范畴{
身份证件
}
标签{
身份证件
提特罗
}
}
计数
}
}
`;
const renderTagItem=item=>{
常量{id,titulo}=项;
返回(
{titulo}
);
};
const removeTagHtml=valor=>valor.replace(/(]+)>)/g';
const=valor=>valor.replace(/-@\w+/g',);
设更新=0;
设dates=格式(Date(),'D');
设月份=格式(日期(),'M');
导出类DayScreen扩展组件{
建造师(道具){
超级(道具);
此.state={
数据:这个.props,
当前索引:0,
sortItem1:month,
sortItem2:日期,
康蒂达梅斯:[
“Enero”,
“费布雷罗”,
“Marzo”,
“Abril”,
“蛋黄酱”,
“朱尼奥”,
“胡里奥”,
“Agosto”,
“七胞胎”,
“Octubre”,
“Noviembre”,
“Diciembre”,
],
纵隔:[
1.
2.
3.
4.
5.
6.
7.
8.
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24,
25,
26,
27,
28,
29,
30,
31,
],
};
}
状态={
项目:[],
};
componentDidUpdate(){
这个.getArticles();
更新=0;
}
getArticles=async()=>{
常量changeArticles=`
{
帖子(第一个:3,直径:${this.state.sortItem2},mes:${month}){
排{
身份证件
费查迪亚霍伊酒店
图像介绍
提特罗
内文
自动
意见
全文索引
全文2
伊曼纽旗
范畴{
身份证件
}
标签{
身份证件
提特罗
}
}
计数
}
}
`;
如果(更新){
试一试{
const response=等待axios.get(
`http://localhost:4000/graphql/?query=${changeArticles}`,
)。然后(响应=>{
此.setState(()=>({
项目:response.data.data.posts.rows,
}));
设{data}=this.props;
const{items}=this.state;
data.posts.rows=项目;
返回响应;
});
//记录响应,以便我们可以在控制台中查看它
//将数据设置为状态
}捕获(错误){
//如果出现错误,请将错误设置为状态
//this.setState(()=>({error}));
console.log(错误);
//console.log(this.state.error);
}
}
};
选择索引=方向=>{
const{currentIndex}=this.state;
常数{
数据:{
职位:{count},
},
}=这是道具;
设nexIndex=currentIndex+方向;
nexIndex=nexIndex<0?计数-1:nexIndex;
nexIndex=nexIndex>=计数?0:nexIndex;
this.setState({currentIndex:nexIndex});
};
月选(){
const{sortItem1,sortItem2,dropdownOpen1}=this.state;
这是我的国家({
dropdownOpen1:!dropdownOpen1,
});
如果(下拉打开1){
月份=sortItem1;
日期=sortItem2;
更新=1;
}
}
日期选择(){
const{sortItem1,sortItem2,dropdownOpen2}=this.state;
这是我的国家({
dropdownOpen2:!dropdownOpen2,
});
如果(下拉打开2){
月份=sortItem1;
日期=sortItem2;
更新=1;
}
}
onDiasChanged=(e)=>{
this.setState({sortItem2:[…e.currentTarget.innerHTML]});
}
onMesChanged=(e)=>{
this.setState({sortItem1:[…e.currentTarget.innerHTML]});
}
render(){
const{data}=this.props;
if(数据加载){
返回装载。。。;
}
if(data.error){
返回{data.error.message};
}
if(data.posts.rows.length
{sortItem1}
{cantidadMeses.map((项目,i)=>(
{i+1}
))}
2.
迪亚
{
此.dateSelected();
}}>
{sortItem2}
{diasMes.map(i=>(
{i}
))}
{rows.map(itemArticulo=>(
{removeTagHtml(itemArticulo.i
import React, { Component } from 'react';
import PropTypes from 'prop-types';
import format from 'date-fns/format';
import gql from 'graphql-tag';
import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
import { Link } from 'react-router-dom';
import { graphql } from 'react-apollo';
import '../../../node_modules/bootstrap/dist/css/bootstrap.css';
import './style.css';
import {
ButtonDropdown,
DropdownToggle,
DropdownMenu,
DropdownItem,
} from 'reactstrap';
import axios from 'axios';
import TituloSmall, { types } from '../TituloSmall';
const query0 = gql`
query postsDiaComoHoy($dia: Int!, $mes: Int!) {
posts(first: 2, dia: $dia, mes: $mes, categoria: 28) {
rows {
id
fecha_dia_hoy
imagen_intro
titulo
introtext
autor
fulltext
fulltext2
imagen_banner
categoria {
id
}
tags {
id
titulo
}
}
count
}
}
`;
const renderTagItem = item => {
const { id, titulo } = item;
return (
<Link key={id} to={`/tags/${id}/`}>
<div className="tag">{titulo}</div>
</Link>
);
};
const removeTagHtml = valor => valor.replace(/(<([^>]+)>)/g, '');
const removerTwitter = valor => valor.replace(/- @\w+/g, '');
let updated = 0;
let dates = format(Date(), 'D');
let month = format(Date(), 'M');
export class DayScreen extends Component {
constructor(props) {
super(props);
this.state = {
data: this.props,
currentIndex: 0,
sortItem1: month,
sortItem2: dates,
cantidadMeses: [
'Enero',
'Febrero',
'Marzo',
'Abril',
'Mayo',
'Junio',
'Julio',
'Agosto',
'Septiembre',
'Octubre',
'Noviembre',
'Diciembre',
],
diasMes: [
1,
2,
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15,
16,
17,
18,
19,
20,
21,
22,
23,
24,
25,
26,
27,
28,
29,
30,
31,
],
};
}
state = {
items: [],
};
componentDidUpdate() {
this.getArticles();
updated = 0;
}
getArticles = async () => {
const changeArticles = `
{
posts(first: 3, dia: ${this.state.sortItem2}, mes: ${month}) {
rows {
id
fecha_dia_hoy
imagen_intro
titulo
introtext
autor
views
fulltext
fulltext2
imagen_banner
categoria {
id
}
tags{
id
titulo
}
}
count
}
}
`;
if (updated) {
try {
const response = await axios.get(
`http://localhost:4000/graphql/?query=${changeArticles}`,
) .then(response => {
this.setState(() => ({
items: response.data.data.posts.rows,
}));
let { data } = this.props;
const { items } = this.state;
data.posts.rows = items;
return response;
});
// Log the response so we can look at it in the console
// Set the data to the state
} catch (error) {
// If there's an error, set the error to the state
// this.setState(() => ({ error }));
console.log(error);
// console.log(this.state.error);
}
}
};
selectIndex = direction => {
const { currentIndex } = this.state;
const {
data: {
posts: { count },
},
} = this.props;
let nexIndex = currentIndex + direction;
nexIndex = nexIndex < 0 ? count - 1 : nexIndex;
nexIndex = nexIndex >= count ? 0 : nexIndex;
this.setState({ currentIndex: nexIndex });
};
monthSelected() {
const { sortItem1, sortItem2, dropdownOpen1 } = this.state;
this.setState({
dropdownOpen1: !dropdownOpen1,
});
if (dropdownOpen1) {
month = sortItem1;
dates = sortItem2;
updated = 1;
}
}
dateSelected() {
const { sortItem1, sortItem2, dropdownOpen2 } = this.state;
this.setState({
dropdownOpen2: !dropdownOpen2,
});
if (dropdownOpen2) {
month = sortItem1;
dates = sortItem2;
updated = 1;
}
}
onDiasChanged=(e)=>{
this.setState({sortItem2:[...e.currentTarget.innerHTML]});
}
onMesChanged=(e)=>{
this.setState({sortItem1:[...e.currentTarget.innerHTML]});
}
render() {
const { data } = this.props;
if (data.loading) {
return <div>Loading...</div>;
}
if (data.error) {
return <div>{data.error.message}</div>;
}
if (data.posts.rows.length <= 0) {
return <div>Nada que mostrar...</div>;
}
const {
data: {
posts: { rows },
},
} = this.props;
this.items = this.props.data.posts.rows;
const {
currentIndex,
sortItem1,
cantidadMeses,
sortItem2,
dropdownOpen1,
dropdownOpen2,
diasMes,
} = this.state;
const item = rows[currentIndex] ? rows[currentIndex] : rows[0];
const html = item.fulltext + item.fulltext2;
const image = `${process.env.REACT_APP_IMG_BASE}${item.imagen_intro ||
item.imagen_banner}`;
data.variables.mes = sortItem1;
data.variables.dia = sortItem2;
return (
<div className="containerDiaComoHoyNoticia">
<div className="box">
<span />
<span />
<div className="mesTexto">{cantidadMeses[sortItem1 - 1]}</div>
<div className="diaTexto">{sortItem2}</div>
</div>
<div>
<div className="textoContainer">
<div className="tituloDiaComoHoyNoticia">
{'BUSCA QUE OCURRIÓ EL DÍA QUE TU QUIERAS EN EL FÚTBOL'}
</div>
<div className="separatorLinea" />
<div className="listaMesDia">
<span className="circuloMesDia">1</span>
<span>Mes</span>
<ButtonDropdown
isOpen={dropdownOpen1}
toggle={() => {
this.monthSelected();
}}>
<DropdownToggle color="white" caret>
{sortItem1}
</DropdownToggle>
<DropdownMenu>
{cantidadMeses.map((items, i) => (
<DropdownItem
dropDownValue="Mes"
dropDownValue="Mes" onClick={this.onMesChanged}>
{i + 1}
</DropdownItem>
))}
</DropdownMenu>
</ButtonDropdown>
<span className="circuloMesDia">2</span>
<span>Dia</span>
<ButtonDropdown
isOpen={dropdownOpen2}
toggle={() => {
this.dateSelected();
}}>
<DropdownToggle caret>{sortItem2}</DropdownToggle>
<DropdownMenu>
{diasMes.map(i => (
<DropdownItem
dropDownValue="Mes" onClick={this.onDiasChanged}>
{i}
</DropdownItem>
))}
</DropdownMenu>
</ButtonDropdown>
</div>
</div>
</div>
{rows.map(itemArticulo => (
<div className="listaNoticiasContenido">
<img
alt={itemArticulo.titulo}
src={process.env.REACT_APP_IMG_BASE + itemArticulo.imagen_intro}
className="listaNoticiasImagen"
/>
<div className="rectanguloIconoPlay" />
<div className="contenidoArticulo">
<div className="tituloArticulo"><a href="#" onClick = {this.state.currentIndex = 1}>{itemArticulo.titulo}</a></div>
<div className="descripcionArticulo">
{removeTagHtml(itemArticulo.introtext)}
</div>
<div className="escritor">
<div className="nombreAutor">
<div>
<FontAwesomeIcon icon="user-circle" />
<span className="autorArticulo">
{removerTwitter(itemArticulo.autor) || 'Sin autor'}
</span>
<FontAwesomeIcon icon="eye" />
<span className="vistasTotalesArticulos">
{itemArticulo.views}
</span>
<FontAwesomeIcon icon="calendar" />
<span className="cantidadArticulosEscritos">
{itemArticulo.fecha_dia_hoy}
</span>
</div>
</div>
</div>
</div>
<div className="separadorArticulos" />
</div>
))}
<h2 className="tituloDescripcion">{item.titulo}</h2>
<div className="titlesContainer">
<TituloSmall
iconName="user-circle"
label={item.autor || 'Sin autor'}
/>
<TituloSmall
iconName="calendar"
label={format(item.fecha_dia_hoy, 'DD/MM/YYYY')}
/>
</div>
<div className="imageIntro">
<img className="imageDescription" src={image} alt={item.titulo} />
<div className="esquinaFigura">
<div className="boxWhite">
<span />
<span />
<div className="mesTextoBoxWhite">
{cantidadMeses[sortItem1 - 1]}
</div>
<div className="diaTextoBoxWhite">{sortItem2}</div>
</div>
</div>
</div>
<article dangerouslySetInnerHTML={{ __html: html }} />
<TituloSmall iconName="tags" label="Tags" type={types.BIG} />
{item.tags.map(itemsTags => renderTagItem(itemsTags))}
</div>
);
}
}
DayScreen.propTypes = {
data: PropTypes.shape({
loading: PropTypes.bool.isRequired,
currentSortItem: PropTypes.string.isRequired,
error: PropTypes.shape({ message: PropTypes.string }),
}).isRequired,
};
DayScreen.defaultProps = {};
const queryOptions = {
options: () => ({
variables: {
dia: dates,
mes: month,
},
}),
};
export default graphql(query0, queryOptions)(DayScreen);
onMessChanged=(e)=>{
this.setState({sortItem2:e.currentTarget.innerHTML});
}
<DropdownMenu>
{diasMes.map(i => (
<DropdownItem
dropDownValue="Mes"
onClick={this.onMessChanged}>
{i}
</DropdownItem>
))}
</DropdownMenu>