Javascript 如何将OnSubmit与Dropzone一起使用?

Javascript 如何将OnSubmit与Dropzone一起使用?,javascript,reactjs,dropzone,Javascript,Reactjs,Dropzone,我正在使用dropzone将图像上传到AmazonS3,但希望在我按下submit按钮后上传图像,而不是在“删除”图像时。我怎么能这样做?这是我的密码。每当我尝试删除图像时,我都会出错:未处理的拒绝(TypeError):event.preventDefault不是函数 import React, { useState } from 'react' import { Typography, Button, Form, message, Input, Icon } from 'antd'; imp

我正在使用dropzone将图像上传到AmazonS3,但希望在我按下submit按钮后上传图像,而不是在“删除”图像时。我怎么能这样做?这是我的密码。每当我尝试删除图像时,我都会出错:未处理的拒绝(TypeError):event.preventDefault不是函数

import React, { useState } from 'react'
import { Typography, Button, Form, message, Input, Icon } from 'antd';
import FileUpload from '../../utils/FileUpload'
import Axios from 'axios';
import Dropzone from 'react-dropzone';
import download from './download.jpeg'



const { Title } = Typography;
const { TextArea } = Input;

 
const Continents = [
    { key: 1, value: "1" },
    { key: 2, value: "2" },
    { key: 3, value: "3" },
    { key: 4, value: "4" },
    { key: 5, value: "5" },
    { key: 6, value: "6" },
    { key: 7, value: "7" }
]


function UploadProductPage(props) {

    const [TitleValue, setTitleValue] = useState("")
    const [DescriptionValue, setDescriptionValue] = useState("")
    const [PriceValue, setPriceValue] = useState(0)
    const [ContinentValue, setContinentValue] = useState([])
    const [Images, setImages] = useState([])

    const onTitleChange = (event) => {
        setTitleValue(event.currentTarget.value)
    }

    const onDescriptionChange = (event) => {
        setDescriptionValue(event.currentTarget.value)
    }

    const onPriceChange = (event) => {
        setPriceValue(event.currentTarget.value)
    }

    const onContinentsSelectChange = (event) => {
        setContinentValue(event.currentTarget.value)
    }

    const updateImages = (newImages) => {
        setImages(newImages)
    }


    ///////// on drop stuff 

  
    const onSubmit = (event, files) => {
        event.preventDefault();


        if (!TitleValue || !DescriptionValue || !PriceValue ||
            !ContinentValue || !Images) {
            return alert('fill all the fields first!')
        }

        const variables = {
            writer: props.user.userData._id,
            title: TitleValue,
            description: DescriptionValue,
            price: PriceValue,
            images: Images,
            continents: ContinentValue,
        }

        Axios.post('/api/product/uploadProduct', variables)
            .then(response => {
                if (response.data.success) {
                    alert('Product Successfully Uploaded')
                    props.history.push({
                        pathname: "/user/cart",
                        state: {
                          data: variables,
                        }, 
                      })
                } else {
                    alert('Failed to upload Product')
                }
            })
            
            let formData = new FormData();
            const config = {
                header: {
                    'accept': 'application/json',
                    'Accept-Language': 'en-US,en;q=0.8',
                    'Content-Type': `multipart/form-data; boundary=${formData._boundary}`
                }
            }
            formData.append("galleryImage", files)
            //save the Image we chose inside the Node Server 
            Axios.post('/api/photo/uploadMultiple', formData, config)
                .then(response => {
                    if (response.data.success) {
    
                        setImages([...Images, response.data.image])
                        props.refreshFunction([...Images, response.data.image])
    
                    } else {
                        alert('Failed to save the Image in Server')
                    }
                })
    }

    return (
        
        <div style={{ maxWidth: '700px', margin: '2rem auto' }}>
            <div style={{ textAlign: 'center', marginBottom: '2rem' }}>
                <Title level={2}> Upload Prompt </Title>

    
            </div>
            <div style={{ display: 'flex', justifyContent: 'space-between' }}>
            

        </div>
            


            <Form onSubmit={onSubmit} >

                {/* DropZone */}
                <div >
             <Dropzone
                onDrop={onSubmit}
                multiple={false}
                maxSize={800000000}
            >
                {({ getRootProps, getInputProps }) => (
                    <div style={{
                        width: '300px', height: '240px', border: '1px solid lightgray',
                        display: 'flex', alignItems: 'center', justifyContent: 'center'
                    }}
                        {...getRootProps()}
                    >
                        {console.log('getRootProps', { ...getRootProps() })}
                        {console.log('getInputProps', { ...getInputProps() })}
                        <input {...getInputProps()} />
                        <Icon type="plus" style={{ fontSize: '3rem' }} />

                    </div>
                )}
            </Dropzone>
        </div>

                <br />
                <br />
                <label>Subject</label>
                <Input
                    onChange={onTitleChange}
                    value={TitleValue}
                />
                <br />
                <br />
                <label>Title</label>
                <Input
                    onChange={onDescriptionChange}
                    value={DescriptionValue}
                />
                <br />
                <br />
                <label>Pages</label>
                <Input
                    onChange={onPriceChange}
                    value={PriceValue}
                    type="number"
                />
                <br /><br />
                <label>Due Date</label>
                <br /><br />
                <Input onChange={onContinentsSelectChange} value={ContinentValue}
                    type="date"
                />
                <br />
                <br />
                <Button
                    onClick={onSubmit}
                >
                    Submit
                </Button>
            </Form>
        </div>
    )
}

export default UploadProductPage
import React,{useState}来自“React”
从“antd”导入{排版、按钮、表单、消息、输入、图标};
从“../../utils/FileUpload”导入文件上载
从“Axios”导入Axios;
从“react Dropzone”导入Dropzone;
从“./download.jpeg”导入下载
const{Title}=排版;
const{TextArea}=输入;
常量大陆=[
{键:1,值:“1”},
{键:2,值:“2”},
{键:3,值:“3”},
{键:4,值:“4”},
{键:5,值:“5”},
{键:6,值:“6”},
{键:7,值:“7”}
]
功能上传ProductPage(道具){
常量[TitleValue,setTitleValue]=useState(“”)
常量[DescriptionValue,setDescriptionValue]=useState(“”)
常量[PriceValue,setPriceValue]=useState(0)
常量[ContinentValue,setContinentValue]=useState([])
常量[Images,setImages]=useState([])
const onTitleChange=(事件)=>{
setTitleValue(event.currentTarget.value)
}
const onDescriptionChange=(事件)=>{
setDescriptionValue(event.currentTarget.value)
}
const onPriceChange=(事件)=>{
setPriceValue(event.currentTarget.value)
}
常量onContinentsSelectChange=(事件)=>{
SetValue(event.currentTarget.value)
}
常量更新图像=(新图像)=>{
设置图像(新图像)
}
/////////放东西
const onSubmit=(事件、文件)=>{
event.preventDefault();
如果(!TitleValue | | |!DescriptionValue | |!PriceValue||
!大陆值| |!图像){
返回警报('首先填写所有字段!')
}
常量变量={
编写器:props.user.userData.\u id,
标题:TitleValue,
description:DescriptionValue,
价格:价格价值,
图像:图像,
大陆:大陆价值,
}
post('/api/product/uploadProduct',变量)
。然后(响应=>{
if(response.data.success){
警报('产品已成功上载')
道具,历史,推({
路径名:“/user/cart”,
声明:{
数据:变量,
}, 
})
}否则{
警报('未能上载产品')
}
})
设formData=new formData();
常量配置={
标题:{
“接受”:“应用程序/json”,
‘接受语言’:‘en-US,en;q=0.8’,
“内容类型”:“多部分/表单数据;边界=${formData.\u boundary}”`
}
}
追加(“galleryImage”,文件)
//将我们选择的映像保存在节点服务器中
post('/api/photo/uploadMultiple',formData,config)
。然后(响应=>{
if(response.data.success){
setImages([…Images,response.data.image])
props.refreshFunction([…image,response.data.image])
}否则{
警报('未能在服务器中保存映像')
}
})
}
返回(
上传提示
{/*DropZone*/}
{({getRootProps,getInputProps})=>(
{console.log('getRootProps',{…getRootProps()})}
{console.log('getInputProps',{…getInputProps()})}
)}


主题

标题



到期日



提交 ) } 导出默认上载ProductPage