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【Next.js 项目实战系列】05-删除 Issue

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上一篇【Next.js 项目实战系列】04-修改 Issue

删除 Issue

添加删除 Button

本节代码链接

这里我们主要关注布局的问题，我们调整 Grid 的 columns 与第一个 Box 的设置，使得在小设备上，两个 Box 上下排布，在中等及以上，左边 Box 占屏幕 80%

# /app/issues/[id]/page.tsxconst IssueDeatilPage = async ({ params }: Props) => {...return (
+     <Grid columns={{ initial: "1", sm: "5" }} gap="5">
+       <Box className="md:col-span-4"><IssueDetails issue={issue} /></Box><Box><Flex direction="column" gap="3"><EditIssueButton issueId={issue.id} />
+           <DeleteIssueButton issueId={issue.id} /></Flex></Box></Grid>);};export default IssueDeatilPage;

其次，在 layout.tsx 中将 <main > 中所有内容用 Radix UI 中的 Container 包起来，以实现居中，最终显示效果如下

Delete Page

添加确认框

本节代码链接

# /app/issues/[id]/DeleteIssueButton.tsx"use client";
import { AlertDialog, Button, Flex } from "@radix-ui/themes";
import { Cross2Icon } from "@radix-ui/react-icons";const DeleteIssueButton = ({ issueId }: { issueId: number }) => {return (<AlertDialog.Root><AlertDialog.Trigger><Button color="red"><Cross2Icon />Delete Issue</Button></AlertDialog.Trigger><AlertDialog.Content><AlertDialog.Title>Confirm Deletion</AlertDialog.Title><AlertDialog.Description>Are you sure you want to delete this? This action cannot be undone.</AlertDialog.Description><Flex mt="4" gap="4"><AlertDialog.Cancel><Button variant="soft" color="gray">Cancel</Button></AlertDialog.Cancel><AlertDialog.Action><Button color="red">Delete Issue</Button></AlertDialog.Action></Flex></AlertDialog.Content></AlertDialog.Root>);
};
export default DeleteIssueButton;

显示效果如下

Confirm Dialog

删除 Issue

API

本节代码链接

# /app/api/issues/[id]/route.tsxexport async function DELETE(request: NextRequest,{ params }: { params: { id: string } }
) {const issue = await prisma.issue.findUnique({where: { id: parseInt(params.id) },});if (!issue)return NextResponse.json({ error: "Invalid Issue" }, { status: 404 });await prisma.issue.delete({where: { id: issue.id },});return NextResponse.json({ status: 200 });
}

连接

本节代码链接

# /app/issues/[id]/DeleteIssueButton.tsx...
+ import axios from "axios";
+ import { useRouter } from "next/navigation";const DeleteIssueButton = ({ issueId }: { issueId: number }) => {
+   const router = useRouter();
+   const handleDelete = async () => {
+     await axios.delete("/api/issues/" + issueId);
+     router.push("/issues");
+     router.refresh();
+   };return (...<AlertDialog.Action>
+       <Button color="red" onClick={handleDelete}>Delete Issue</Button></AlertDialog.Action>...);};export default DeleteIssueButton;

处理 error

本节代码链接

# /app/issues/[id]/DeleteIssueButton.tsx...
+ import { useState } from "react";const DeleteIssueButton = ({ issueId }: { issueId: number }) => {
+   const [error, setError] = useState(false);const handleDeleteIssue = async () => {try {await axios.delete("/api/issues/" + issueId);router.push("/issues");router.refresh();} catch (error) {
+       setError(true);}};return (<><AlertDialog.Root>...</AlertDialog.Root>
+       <AlertDialog.Root open={error}>
+         <AlertDialog.Content>
+           <AlertDialog.Title>Error</AlertDialog.Title>
+           <AlertDialog.Description>
+             This issue could not be deleted
+           </AlertDialog.Description>
+           <Button
+             color="gray"
+             variant="soft"
+             mt="4"
+             onClick={() => setError(false)}
+           >
+             OK
+           </Button>
+         </AlertDialog.Content>
+       </AlertDialog.Root></>);};export default DeleteIssueButton;

效果如下，在发生错误时会弹出这样一个框

Delete Error

优化用户体验

本节代码链接

和Button 优化技巧一章相同，我们可以添加一个 Spinner 和 Disable 来优化用户体验

# /app/issues/[id]/DeleteIssueButton.tsx+ import { Spinner } from "@/app/components";const DeleteIssueButton = ({ issueId }: { issueId: number }) => {
+   const [isDeleting, setDeleting] = useState(false);const handleDeleteIssue = async () => {try {
+       setDeleting(true);await axios.delete("/api/issues/" + issueId);router.push("/issues");router.refresh();} catch (error) {
+       setDeleting(false);setError(true);}};return (...<AlertDialog.Trigger>
+       <Button color="red" disabled={isDeleting}><Cross2Icon />Delete Issue
+         {isDeleting && <Spinner />}</Button></AlertDialog.Trigger>...);};export default DeleteIssueButton;