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javascript - 在 React 中单击另一个组件中的按钮后如何显示模态?

转载 作者:行者123 更新时间:2023-12-05 02:28:56 24 4
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我有这两个组件:

import React, { useState, useEffect } from "react";
import axios from "axios";
import Button from "../../../components/Button";
import NewAreaModal from "./NewAreaModal";

function GestioneAree() {

const [aree, setAree] = useState([]);
const [show, setShow] = useState(false);

useEffect(() => {
axios.get("http://localhost:8080/aree/all").then((res) => {
setAree(res.data);
console.log(res.data);
});
}, []);

const showModal = () => {
setShow(true);
}

return (
<div className="bg-white rounded-lg">
<div className="px-4 py-5 sm:px-6 rounded">
<div className="-ml-4 -mt-2 flex items-center justify-between flex-wrap sm:flex-nowrap">
<div className="ml-4 mt-2">
<h3 className="text-lg leading-6 font-medium text-gray-900">Aree nel Sistema</h3>
</div>
<div className="ml-4 mt-2 flex-shrink-0">
<Button type="button" decoration="primary" text="Crea Nuova Area" onClick={showModal}/>
</div>
</div>
</div>
<div className="flex flex-col">
<div className="-my-2 overflow-x-auto sm:-mx-6 lg:-mx-8">
<div className="py-2 align-middle inline-block min-w-full sm:px-6 lg:px-8">
<div className="shadow overflow-hidden border-t border-gray-200 sm:rounded-lg">
<table className="min-w-full divide-y divide-gray-200">
<thead className="bg-gray-50">
<tr>
<th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
Toponimo
</th>
<th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
Territorio
</th>
<th scope="col" className="relative px-6 py-3">
<span className="sr-only">Edit</span>
</th>
</tr>
</thead>
<tbody>
{aree.map((area) => (
<tr key={area.idArea} className="bg-white border-b">
<td className="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">{area.toponimo}</td>
<td className="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">{area.territorio.nome}</td>
<td className="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
<button type="button" className="text-green-600 hover:text-green-900" >
Modifica
</button>
</td>
</tr>
))}
</tbody>
</table>
<NewAreaModal show={show} />
</div>
</div>
</div>
</div>
</div>
);
}

export default GestioneAree;

import React, { useState, useRef, Fragment } from "react";
import { Dialog, Transition } from "@headlessui/react";
import Button from "../../../components/Button";

function NewAreaModal() {
const [open, setOpen] = useState(true);

const cancelButtonRef = useRef(null);

return (
<Transition.Root show={open}>
<Dialog as="div" className="relative z-10" initialFocus={cancelButtonRef} onClose={setOpen}>
<Transition.Child as={Fragment} enter="ease-out duration-300" enterFrom="opacity-0" enterTo="opacity-100" leave="ease-in duration-200" leaveFrom="opacity-100" leaveTo="opacity-0">
<div className="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" />
</Transition.Child>
<div className="fixed z-10 inset-0 overflow-y-auto">
<div className="flex items-end sm:items-center justify-center min-h-full p-4 text-center sm:p-0">
<Transition.Child as={Fragment} enter="ease-out duration-300" enterFrom="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95" enterTo="opacity-100 translate-y-0 sm:scale-100" leave="ease-in duration-200" leaveFrom="opacity-100 translate-y-0 sm:scale-100" leaveTo="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95">
<Dialog.Panel className="relative bg-white rounded-lg text-left overflow-hidden shadow-xl transform transition-all sm:my-8 sm:max-w-lg sm:w-full">
<div className="bg-white px-4 pt-5 pb-4 sm:p-6 sm:pb-4">
{
// Form here
}
</div>
<div className="bg-gray-50 px-4 py-3 sm:px-6 sm:flex sm:flex-row-reverse">
<Button type="button" text="Crea Area" decoration="primary" otherCSS={"w-full justify-center sm:ml-3 sm:w-auto sm:text-sm"} onClick={() => setOpen(false)}/>
<Button type="button" text="Annulla" decoration="secondary" otherCSS={"w-full justify-center sm:mt-0 sm:ml-3 sm:w-auto sm:text-sm"} onClick={() => setOpen(false)} ref={cancelButtonRef}/>
</div>
</Dialog.Panel>
</Transition.Child>
</div>
</div>
</Dialog>
</Transition.Root>
);
}

export default NewAreaModal;

我想做的是打开组件 NewAreaModal.js当我单击 Crea Nuova Area 按钮时...我的代码有什么问题?

我试了很多方法都不行。例如,我试图将一个名为 show 的 Prop 传递给 NewAreaModal|然后我把这个变量放在useState里面在const [open, setOpen] = useState(show)但是 <Transition>组件说即使我传递了一个 bool 变量也缺少 show Prop ......

这段代码缺少一些与后端通信的功能,因为我刚刚开始!

我从 2 个月开始练习 React,所以我没有太多经验...

谢谢大家的耐心等待!

最佳答案

我觉得你的父组件没问题。它会说问题出在您如何处理子项中的按钮交互和 Prop 。

我会先尝试这样的事情:

家长:

   import NewAreaModal from "./NewAreaModal";

function GestioneAree() {

const [aree, setAree] = useState([]);
const [show, setShow] = useState(false);

useEffect(() => {
axios.get("http://localhost:8080/aree/all").then((res) => {
setAree(res.data);
console.log(res.data);
});
}, []);

const showModal = () => {
setShow(true);
}

return (
<div className="bg-white rounded-lg">
<div className="px-4 py-5 sm:px-6 rounded">
<div className="-ml-4 -mt-2 flex items-center justify-between flex-wrap sm:flex-nowrap">
<div className="ml-4 mt-2">
<h3 className="text-lg leading-6 font-medium text-gray-900">Aree nel Sistema</h3>
</div>
<div className="ml-4 mt-2 flex-shrink-0">
<Button type="button" decoration="primary" text="Crea Nuova Area" onClick={showModal}/>
</div>
</div>
</div>
<div className="flex flex-col">
<div className="-my-2 overflow-x-auto sm:-mx-6 lg:-mx-8">
<div className="py-2 align-middle inline-block min-w-full sm:px-6 lg:px-8">
<div className="shadow overflow-hidden border-t border-gray-200 sm:rounded-lg">
<table className="min-w-full divide-y divide-gray-200">
<thead className="bg-gray-50">
<tr>
<th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
Toponimo
</th>
<th scope="col" className="px-6 py-3 text-left text-xs font-medium text-gray-500 uppercase tracking-wider">
Territorio
</th>
<th scope="col" className="relative px-6 py-3">
<span className="sr-only">Edit</span>
</th>
</tr>
</thead>
<tbody>
{aree.map((area) => (
<tr key={area.idArea} className="bg-white border-b">
<td className="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">{area.toponimo}</td>
<td className="px-6 py-4 whitespace-nowrap text-sm font-medium text-gray-900">{area.territorio.nome}</td>
<td className="px-6 py-4 whitespace-nowrap text-right text-sm font-medium">
<button type="button" className="text-green-600 hover:text-green-900" >
Modifica
</button>
</td>
</tr>
))}
</tbody>
</table>
<NewAreaModal show={show} setShow={(bool) => setShow(bool) />
</div>
</div>
</div>
</div>
</div>
);
}

export default GestioneAree;

child :

import React, { useState, useRef, Fragment } from "react";
import { Dialog, Transition } from "@headlessui/react";
import Button from "../../../components/Button";

function NewAreaModal({show, setShow}) {

const cancelButtonRef = useRef(null);


return (
<Transition.Root show={show}>
<Dialog as="div" className="relative z-10" initialFocus={cancelButtonRef} onClose={setOpen}>
<Transition.Child as={Fragment} enter="ease-out duration-300" enterFrom="opacity-0" enterTo="opacity-100" leave="ease-in duration-200" leaveFrom="opacity-100" leaveTo="opacity-0">
<div className="fixed inset-0 bg-gray-500 bg-opacity-75 transition-opacity" />
</Transition.Child>
<div className="fixed z-10 inset-0 overflow-y-auto">
<div className="flex items-end sm:items-center justify-center min-h-full p-4 text-center sm:p-0">
<Transition.Child as={Fragment} enter="ease-out duration-300" enterFrom="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95" enterTo="opacity-100 translate-y-0 sm:scale-100" leave="ease-in duration-200" leaveFrom="opacity-100 translate-y-0 sm:scale-100" leaveTo="opacity-0 translate-y-4 sm:translate-y-0 sm:scale-95">
<Dialog.Panel className="relative bg-white rounded-lg text-left overflow-hidden shadow-xl transform transition-all sm:my-8 sm:max-w-lg sm:w-full">
<div className="bg-white px-4 pt-5 pb-4 sm:p-6 sm:pb-4">
{
// Form here
}
</div>
<div className="bg-gray-50 px-4 py-3 sm:px-6 sm:flex sm:flex-row-reverse">
<Button type="button" text="Crea Area" decoration="primary" otherCSS={"w-full justify-center sm:ml-3 sm:w-auto sm:text-sm"} onClick={() => setShow(false)}/>
<Button type="button" text="Annulla" decoration="secondary" otherCSS={"w-full justify-center sm:mt-0 sm:ml-3 sm:w-auto sm:text-sm"} onClick={() => setShow(false)} ref={cancelButtonRef}/>
</div>
</Dialog.Panel>
</Transition.Child>
</div>
</div>
</Dialog>
</Transition.Root>
);
}

export default NewAreaModal;

关于javascript - 在 React 中单击另一个组件中的按钮后如何显示模态?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/72459744/

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