example for Automattic/mongoose#15922 #10
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| // app/layout.tsx | ||
| export const metadata = { | ||
| title: 'Your App', | ||
| description: '…', | ||
| }; | ||
| export default function RootLayout({ children, }) { | ||
| return (<html lang="en"><body>{children}</body> | ||
| </html>); | ||
| } | ||
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| @@ -0,0 +1,35 @@ | ||||||
| import mongoose from 'mongoose'; | ||||||
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This introduces Useful? React with 👍 / 👎. |
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| import { revalidatePath } from 'next/cache'; | ||||||
| mongoose.connect('mongodb://127.0.0.1:27017/mongoose_test'); | ||||||
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There was a problem hiding this comment. The mongoose.connect() call is not awaited, which means the connection may not be established when the User model is used. This could lead to runtime errors when trying to query or create users before the connection is ready. Either await this call or handle the connection promise appropriately.
Suggested change
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| const userSchema = new mongoose.Schema({ | ||||||
| name: { type: String, required: true, trim: true, minLength: 6 } | ||||||
| }, { timestamps: true }); | ||||||
| const User = mongoose.model('User', userSchema, 'users', { overwriteModels: true }); | ||||||
| // --- Server Action --- | ||||||
| async function addUser(formData) { | ||||||
| 'use server'; | ||||||
| const name = String(formData.get('name') || '').trim(); | ||||||
| await User.create({ name }); | ||||||
| revalidatePath('/'); | ||||||
| } | ||||||
| // --- Page --- | ||||||
| export default async function Page() { | ||||||
| const users = await User.find().sort({ _id: -1 }).lean(); | ||||||
| return (<main style={{ fontFamily: 'sans-serif', maxWidth: 480, margin: '2rem auto' }}> | ||||||
| <h1 style={{ marginBottom: '0.75rem' }}>Users</h1> | ||||||
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| <form action={addUser} style={{ marginBottom: '1rem', display: 'flex', gap: '0.5rem' }}> | ||||||
| <input name="name" placeholder="Enter name" required style={{ flex: 1, padding: '0.5rem' }}/> | ||||||
| <button type="submit" style={{ padding: '0.5rem 0.9rem' }}>Add</button> | ||||||
| </form> | ||||||
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| <ul style={{ paddingLeft: '1rem' }}> | ||||||
| {users.map((u) => { | ||||||
| var _a, _b; | ||||||
| return (<li key={(_b = (_a = u._id) === null || _a === void 0 ? void 0 : _a.toString()) !== null && _b !== void 0 ? _b : ''} style={{ margin: '0.25rem 0' }}> | ||||||
| {u.name} | ||||||
| </li>); | ||||||
| })} | ||||||
| </ul> | ||||||
| </main>); | ||||||
| } | ||||||
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,7 @@ | ||
| /// <reference types="next" /> | ||
| /// <reference types="next/image-types/global" /> | ||
| /// <reference types="next/navigation-types/compat/navigation" /> | ||
| import "./.next/dev/types/routes.d.ts"; | ||
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| // NOTE: This file should not be edited | ||
| // see https://nextjs.org/docs/app/api-reference/config/typescript for more information. |
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| @@ -1,10 +1,15 @@ | ||
| { | ||
| "dependencies": { | ||
| "@mongoosejs/studio": "^0.1.4", | ||
| "@types/node": "^25.0.3", | ||
| "@types/react": "^19.2.7", | ||
| "@types/react-dom": "^19.2.3", | ||
| "mongoose": "^8.19.0", | ||
| "next": "^16.0.2", | ||
| "typescript": "^5.9.3" | ||
| }, | ||
| "scripts": { | ||
| "build": "tsc", | ||
| "start": "next dev" | ||
| } | ||
| } |
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| @@ -0,0 +1,35 @@ | ||
| { | ||
| "compilerOptions": { | ||
| "target": "ES2017", | ||
| "strict": true, | ||
| "skipLibCheck": true, | ||
| "moduleResolution": "bundler", | ||
| "isolatedModules": true, | ||
| "jsx": "react-jsx", | ||
| "lib": [ | ||
| "dom", | ||
| "dom.iterable", | ||
| "esnext" | ||
| ], | ||
| "allowJs": true, | ||
| "noEmit": true, | ||
| "incremental": true, | ||
| "module": "esnext", | ||
| "esModuleInterop": true, | ||
| "resolveJsonModule": true, | ||
| "plugins": [ | ||
| { | ||
| "name": "next" | ||
| } | ||
| ] | ||
| }, | ||
| "include": [ | ||
| "**/*.ts", | ||
| "**/*.tsx", | ||
| ".next/types/**/*.ts", | ||
| ".next/dev/types/**/*.ts" | ||
| ], | ||
| "exclude": [ | ||
| "node_modules" | ||
| ] | ||
| } |
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This adds a second
layoutfile (layout.jsx) in the sameappdirectory wherelayout.tsxalready exists. Next’s file-based routing expects exactly onelayoutper segment; having both extensions in the same folder results in a “duplicate layout” conflict or unpredictable file selection at build/dev time. Please remove the extra file or keep only one layout implementation.Useful? React with 👍 / 👎.