如何解决React.js-在我的项目中创建新发票时遇到麻烦
我是React的新手,真的可以用一只手来理解如何在我的项目中创建新发票。
问题: 目前,如下图所示,我可以无问题地创建新的发票。我将输入更改为一些测试数据,以帮助说明我遇到的问题。
这是俯视图,显示了到目前为止堆栈中的发票总数。
我要创建第二张新发票时出现问题。即使我可以单击并相互独立地修改它们,它仍保留了我修改的第一个数据中的所有旧数据。奇怪的是...只有一些值保持不变,而另一些则可以彼此独立...
这是在创建第二张发票后直接进行的:
我将第二张发票更改为所有新数据:
这是发票1中的结果:
现在,当我创建第三张新发票时:
这告诉我它们以某种方式连接。.到我的项目的直接链接在这里:https://github.com/Brent-W-Anderson/invoice-pdf/tree/invoices
否则,我认为问题在于我如何创建新发票或如何修改其中的数据。请查看修改发票的第113行或创建新发票的第94行。我需要我能获得的所有帮助,谢谢!
https://github.com/Brent-W-Anderson/invoice-pdf/blob/invoices/src/components/app.js
import React from 'react';
import Moment from 'moment';
//components
import LoginSignUp from './login-signup/login-signup';
import Navigation from './navigation/navigation';
import Pages from './pages/pages';
//data
import UsersJSON from '../data/users.json'; // some test data for now. going to connect a database later.
import AppJSON from '../data/app.json';
//styling
import 'fontsource-roboto';
import '../styles/app.css';
export default class App extends React.Component {
state = {
loggedIn: false,// set to true to bypass logging in.
transitionOut: false,activeUser: "",// can put whatever name you want here if loggedIn is set to true.
activePage: "invoices",invoiceMode: "view",// dont change this unless you want to start with a specific manageable invoice.
userData: {},// set to the specific array index from the users if looking for some sample data.
users: UsersJSON,appData: AppJSON
};
setActiveModeView = (clicked) => { // view all of the invoices
this.setState({
invoiceMode: "view"
});
}
setActiveModeEdit = () => { // view a specific manageable/ editable invoice
this.setState({
invoiceMode: "edit"
});
}
login = (userData) => { // login and store the users data for component use.
let user = this;
let username = userData.personalInfo.name;
this.setState({
userData: userData,transitionOut: false
});
setTimeout(function() { // let the app animate out before logging in.
user.setState({
loggedIn: true,activeUser: username
});
},1000);
};
logout = () => { // logout and reset the users data.
let user = this;
this.setState({
transitionOut: true
});
setTimeout(function() { // let the app animate out before logging out.
user.setState({
loggedIn: false,userData: {},activePage: "invoices",activeUser: ""
});
},1500);
}
setActivePage = (page) => { // changing tabs
let pageName = page.target.innerHTML.toLowerCase().replace(/\s/g,'');
let app = this;
if(pageName !== "invoices") { // change view mode back to defaults if not within invoices.
setTimeout(function() {
app.setActiveModeView();
},500);
}else {
app.setActiveModeView("invoices");
};
this.setState({
activePage: pageName
});
};
createInvoice = idx => {
console.log(UsersJSON[0].invoices[0]);
this.setState(prevState => ({
userData: {
...prevState.userData,invoices: [
...prevState.userData.invoices,{
...UsersJSON[0].invoices[0],invoiceID: idx + 1,date: Moment(new Date()).format("YYYY-MM-DD")
}
]
}
}));
};
modifyInvoice = (userData,invoiceIdx,clientIdx,otherInputSelected,otherData) => (inputSelected) => { // editing specific invoice data and storing it back in state
const app = this;
let targetID,newVal;
if(inputSelected !== undefined) {
targetID = inputSelected.target.id;
newVal = inputSelected.target.value;
}else {
switch(otherInputSelected) {
case "billToEmail":
targetID = otherInputSelected;
newVal = otherData;
break;
case "fromEmail":
targetID = otherInputSelected;
newVal = otherData;
break;
default:
console.warn("no other input selected to save to app state.");
};
}
let newUserData = userData;
function overwriteState() {
app.setState({
userData: newUserData
});
}
switch(targetID) { // which input would you like to modify?
case "invoiceName":
newUserData.invoices[invoiceIdx].invoiceName = newVal;
overwriteState();
break;
// BILL TO
case "billToName":
newUserData.invoices[invoiceIdx].toName = newVal;
overwriteState();
break;
case "billToEmail":
newUserData.invoices[invoiceIdx].toEmail = newVal;
overwriteState();
break;
case "billToStreet":
newUserData.invoices[invoiceIdx].toAddress.street = newVal;
overwriteState();
break;
case "billToCityState":
newUserData.invoices[invoiceIdx].toAddress.cityState = newVal;
overwriteState();
break;
case "billToZip":
newUserData.invoices[invoiceIdx].toAddress.zip = newVal;
overwriteState();
break;
case "billToPhone":
newUserData.invoices[invoiceIdx].toPhone = newVal;
overwriteState();
break;
// FROM
case "fromName":
newUserData.invoices[invoiceIdx].fromName = newVal;
overwriteState();
break;
case "fromEmail":
newUserData.invoices[invoiceIdx].fromEmail = newVal;
overwriteState();
break;
case "fromStreet":
newUserData.invoices[invoiceIdx].fromAddress.street = newVal;
overwriteState();
break;
case "fromCityState":
newUserData.invoices[invoiceIdx].fromAddress.cityState = newVal;
overwriteState();
break;
case "fromZip":
newUserData.invoices[invoiceIdx].fromAddress.zip = newVal;
overwriteState();
break;
case "fromPhone":
newUserData.invoices[invoiceIdx].fromPhone = newVal;
overwriteState();
break;
// DETAILS
case "date":
newUserData.invoices[invoiceIdx].date = newVal;
overwriteState();
break;
case "description":
newUserData.invoices[invoiceIdx].items.description = newVal;
overwriteState();
break;
case "rate":
newUserData.invoices[invoiceIdx].items.rate = newVal;
overwriteState();
break;
case "qty":
newUserData.invoices[invoiceIdx].items.qty = newVal;
overwriteState();
break;
case "additionalDetails":
newUserData.invoices[invoiceIdx].items.additionalDetails = newVal;
overwriteState();
break;
default:
console.warn("something went wrong... selected target input:");
console.warn(targetID);
}
};
deleteInvoice = (invoice,idx) => { // deletes an invoice
let newUserData = this.state.userData;
newUserData.invoices.splice(idx,1);
for(var x = 0; x < newUserData.invoices.length; x++) {
newUserData.invoices[x].invoiceID = (x + 1).toString();
}
this.setState({
userData: newUserData
});
}
render() {
let app = this.state;
if(app.loggedIn) { // if logged in
return (
<div className="app">
<Navigation
activeUser={app.activeUser}
setActivePage={this.setActivePage}
activePage={app.activePage}
appData={app.appData}
logout={this.logout}
/>
<Pages
setActiveModeView={this.setActiveModeView}
setActiveModeEdit={this.setActiveModeEdit}
invoiceMode={app.invoiceMode}
activePage={app.activePage}
appData={app.appData}
transitionOut={app.transitionOut}
userData={app.userData}
createInvoice={this.createInvoice}
modifyInvoice={this.modifyInvoice}
deleteInvoice={this.deleteInvoice}
/>
</div>
);
}else { // if not logged in
return (
<div className="app">
<LoginSignUp
login={this.login}
users={app.users}
/>
</div>
);
}
}
}
解决方法
我相信一种选择是改变:
case "billToStreet":
newUserData.invoices[invoiceIdx].toAddress = { ...newUserData.invoices[invoiceIdx].toAddress,street: newVal };
overwriteState();
break;
收件人:
/
,并对其他地址字段执行相同操作。
我不确定为什么,但是我怀疑您的所有toAddress条目都引用同一对象。
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