shadcn/ui Component Patterns

Expert guide for building accessible, customizable UI components with shadcn/ui, Radix UI, and Tailwind CSS.

Table of Contents

• When to Use

• Quick Start

• Installation & Setup

• Project Configuration

• Core Components

• Button

• Input & Form Fields

• Forms with Validation

• Card

• Dialog (Modal)

• Select (Dropdown)

• Sheet (Slide-over)

• Menubar & Navigation

• Table

• Toast Notifications

• Advanced Patterns

• Customization

• Next.js Integration

• Best Practices

• Common Component Combinations

When to Use

• Setting up a new project with shadcn/ui

• Installing or configuring individual components

• Building forms with React Hook Form and Zod validation

• Creating accessible UI components (buttons, dialogs, dropdowns, sheets)

• Customizing component styling with Tailwind CSS

• Implementing design systems with shadcn/ui

• Building Next.js applications with TypeScript

• Creating complex layouts and data displays

Quick Start

For new projects, use the automated setup:

Create Next.js project with shadcn/ui

npx create-next-app@latest my-app --typescript --tailwind --eslint --app cd my-app npx shadcn@latest init

Install essential components

npx shadcn@latest add button input form card dialog select

For existing projects:

Install dependencies

npm install tailwindcss-animate class-variance-authority clsx tailwind-merge lucide-react

Initialize shadcn/ui

npx shadcn@latest init

What is shadcn/ui?

shadcn/ui is not a traditional component library or npm package. Instead:

• It's a collection of reusable components that you can copy into your project

• Components are yours to customize - you own the code

• Built with Radix UI primitives for accessibility

• Styled with Tailwind CSS utilities

• Includes CLI tool for easy component installation

Installation & Setup

Initial Setup

Initialize shadcn/ui in your project

npx shadcn@latest init

During setup, you'll configure:

• TypeScript or JavaScript

• Style (Default, New York, etc.)

• Base color theme

• CSS variables or Tailwind CSS classes

• Component installation path

Installing Individual Components

Install a single component

npx shadcn@latest add button

Install multiple components

npx shadcn@latest add button input form

Install all components

npx shadcn@latest add --all

Manual Installation

If you prefer manual setup:

Install dependencies for a specific component

npm install @radix-ui/react-slot

Copy component code from ui.shadcn.com

Place in src/components/ui/

Project Configuration

Required Dependencies

{ "dependencies": { "@radix-ui/react-accordion": "^1.1.2", "@radix-ui/react-alert-dialog": "^1.0.5", "@radix-ui/react-dialog": "^1.0.5", "@radix-ui/react-dropdown-menu": "^2.0.6", "@radix-ui/react-label": "^2.0.2", "@radix-ui/react-select": "^2.0.0", "@radix-ui/react-separator": "^1.0.3", "@radix-ui/react-slot": "^1.0.2", "@radix-ui/react-toast": "^1.1.5", "class-variance-authority": "^0.7.0", "clsx": "^2.0.0", "lucide-react": "^0.294.0", "tailwind-merge": "^2.0.0", "tailwindcss-animate": "^1.0.7" } }

TSConfig Configuration

{ "compilerOptions": { "target": "es5", "lib": ["dom", "dom.iterable", "es6"], "allowJs": true, "skipLibCheck": true, "strict": true, "forceConsistentCasingInFileNames": true, "noEmit": true, "esModuleInterop": true, "module": "esnext", "moduleResolution": "node", "resolveJsonModule": true, "isolatedModules": true, "jsx": "preserve", "incremental": true, "plugins": [ { "name": "next" } ], "baseUrl": ".", "paths": { "@/components/": ["./src/components/"], "@/lib/": ["./src/lib/"] } }, "include": ["next-env.d.ts", "/*.ts", "/.tsx", ".next/types/**/.ts"], "exclude": ["node_modules"] }

Tailwind Configuration

// tailwind.config.js /** @type {import('tailwindcss').Config} / module.exports = { darkMode: ["class"], content: [ './pages/**/.{ts,tsx}', './components//*.{ts,tsx}', './app//.{ts,tsx}', './src/**/.{ts,tsx}', ], prefix: "", theme: { container: { center: true, padding: "2rem", screens: { "2xl": "1400px", }, }, extend: { colors: { border: "hsl(var(--border))", input: "hsl(var(--input))", ring: "hsl(var(--ring))", background: "hsl(var(--background))", foreground: "hsl(var(--foreground))", primary: { DEFAULT: "hsl(var(--primary))", foreground: "hsl(var(--primary-foreground))", }, secondary: { DEFAULT: "hsl(var(--secondary))", foreground: "hsl(var(--secondary-foreground))", }, destructive: { DEFAULT: "hsl(var(--destructive))", foreground: "hsl(var(--destructive-foreground))", }, muted: { DEFAULT: "hsl(var(--muted))", foreground: "hsl(var(--muted-foreground))", }, accent: { DEFAULT: "hsl(var(--accent))", foreground: "hsl(var(--accent-foreground))", }, popover: { DEFAULT: "hsl(var(--popover))", foreground: "hsl(var(--popover-foreground))", }, card: { DEFAULT: "hsl(var(--card))", foreground: "hsl(var(--card-foreground))", }, }, borderRadius: { lg: "var(--radius)", md: "calc(var(--radius) - 2px)", sm: "calc(var(--radius) - 4px)", }, keyframes: { "accordion-down": { from: { height: "0" }, to: { height: "var(--radix-accordion-content-height)" }, }, "accordion-up": { from: { height: "var(--radix-accordion-content-height)" }, to: { height: "0" }, }, }, animation: { "accordion-down": "accordion-down 0.2s ease-out", "accordion-up": "accordion-up 0.2s ease-out", }, }, }, plugins: [require("tailwindcss-animate")], }

CSS Variables (globals.css)

@tailwind base; @tailwind components; @tailwind utilities;

@layer base { :root { --background: 0 0% 100%; --foreground: 222.2 84% 4.9%; --card: 0 0% 100%; --card-foreground: 222.2 84% 4.9%; --popover: 0 0% 100%; --popover-foreground: 222.2 84% 4.9%; --primary: 222.2 47.4% 11.2%; --primary-foreground: 210 40% 98%; --secondary: 210 40% 96.1%; --secondary-foreground: 222.2 47.4% 11.2%; --muted: 210 40% 96.1%; --muted-foreground: 215.4 16.3% 46.9%; --accent: 210 40% 96.1%; --accent-foreground: 222.2 47.4% 11.2%; --destructive: 0 84.2% 60.2%; --destructive-foreground: 210 40% 98%; --border: 214.3 31.8% 91.4%; --input: 214.3 31.8% 91.4%; --ring: 222.2 84% 4.9%; --radius: 0.5rem; }

.dark { --background: 222.2 84% 4.9%; --foreground: 210 40% 98%; --card: 222.2 84% 4.9%; --card-foreground: 210 40% 98%; --popover: 222.2 84% 4.9%; --popover-foreground: 210 40% 98%; --primary: 210 40% 98%; --primary-foreground: 222.2 47.4% 11.2%; --secondary: 217.2 32.6% 17.5%; --secondary-foreground: 210 40% 98%; --muted: 217.2 32.6% 17.5%; --muted-foreground: 215 20.2% 65.1%; --accent: 217.2 32.6% 17.5%; --accent-foreground: 210 40% 98%; --destructive: 0 62.8% 30.6%; --destructive-foreground: 210 40% 98%; --border: 217.2 32.6% 17.5%; --input: 217.2 32.6% 17.5%; --ring: 212.7 26.8% 83.9%; } }

@layer base {

• { @apply border-border; } body { @apply bg-background text-foreground; } }

Core Components

Button Component

Installation:

npx shadcn@latest add button

Basic usage:

import { Button } from "@/components/ui/button";

export function ButtonDemo() { return <Button>Click me</Button>; }

Button variants:

import { Button } from "@/components/ui/button";

export function ButtonVariants() { return ( <div className="flex gap-4"> <Button variant="default">Default</Button> <Button variant="destructive">Destructive</Button> <Button variant="outline">Outline</Button> <Button variant="secondary">Secondary</Button> <Button variant="ghost">Ghost</Button> <Button variant="link">Link</Button> </div> ); }

Button sizes:

<div className="flex gap-4 items-center"> <Button size="default">Default</Button> <Button size="sm">Small</Button> <Button size="lg">Large</Button> <Button size="icon"> <Icon className="h-4 w-4" /> </Button> </div>

With loading state:

import { Button } from "@/components/ui/button"; import { Loader2 } from "lucide-react";

export function ButtonLoading() { return ( <Button disabled> <Loader2 className="mr-2 h-4 w-4 animate-spin" /> Please wait </Button> ); }

Input & Form Fields

Input Component

Installation:

npx shadcn@latest add input

Basic input:

import { Input } from "@/components/ui/input";

export function InputDemo() { return <Input type="email" placeholder="Email" />; }

Input with label:

import { Input } from "@/components/ui/input"; import { Label } from "@/components/ui/label";

export function InputWithLabel() { return ( <div className="grid w-full max-w-sm items-center gap-1.5"> <Label htmlFor="email">Email</Label> <Input type="email" id="email" placeholder="Email" /> </div> ); }

Input with button:

import { Button } from "@/components/ui/button"; import { Input } from "@/components/ui/input";

export function InputWithButton() { return ( <div className="flex w-full max-w-sm items-center gap-2"> <Input type="email" placeholder="Email" /> <Button type="submit" variant="outline">Subscribe</Button> </div> ); }

Forms with Validation

Installation:

npx shadcn@latest add form

This installs React Hook Form, Zod, and form components.

Complete form example:

"use client"

import { zodResolver } from "@hookform/resolvers/zod" import { useForm } from "react-hook-form" import * as z from "zod"

import { Button } from "@/components/ui/button" import { Form, FormControl, FormDescription, FormField, FormItem, FormLabel, FormMessage, } from "@/components/ui/form" import { Input } from "@/components/ui/input" import { toast } from "@/components/ui/use-toast"

const formSchema = z.object({ username: z.string().min(2, { message: "Username must be at least 2 characters.", }), email: z.string().email({ message: "Please enter a valid email address.", }), })

export function ProfileForm() { const form = useForm<z.infer<typeof formSchema>>({ resolver: zodResolver(formSchema), defaultValues: { username: "", email: "", }, })

function onSubmit(values: z.infer<typeof formSchema>) { toast({ title: "You submitted the following values:", description: ( <pre className="mt-2 w-[340px] rounded-md bg-slate-950 p-4"> <code className="text-white">{JSON.stringify(values, null, 2)}</code> </pre> ), }) }

return ( <Form {...form}> <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-8"> <FormField control={form.control} name="username" render={({ field }) => ( <FormItem> <FormLabel>Username</FormLabel> <FormControl> <Input placeholder="shadcn" {...field} /> </FormControl> <FormDescription> This is your public display name. </FormDescription> <FormMessage /> </FormItem> )} />

    <FormField
      control={form.control}
      name="email"
      render={({ field }) => (
        <FormItem>
          <FormLabel>Email</FormLabel>
          <FormControl>
            <Input type="email" placeholder="you@example.com" {...field} />
          </FormControl>
          <FormMessage />
        </FormItem>
      )}
    />
    
    <Button type="submit">Submit</Button>
  </form>
</Form>

) }

Card Component

Installation:

npx shadcn@latest add card

Basic card:

import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle, } from "@/components/ui/card"

export function CardDemo() { return ( <Card> <CardHeader> <CardTitle>Card Title</CardTitle> <CardDescription>Card Description</CardDescription> </CardHeader> <CardContent> <p>Card Content</p> </CardContent> <CardFooter> <p>Card Footer</p> </CardFooter> </Card> ) }

Card with form:

import { Button } from "@/components/ui/button" import { Card, CardContent, CardDescription, CardFooter, CardHeader, CardTitle, } from "@/components/ui/card" import { Input } from "@/components/ui/input" import { Label } from "@/components/ui/label"

export function CardWithForm() { return ( <Card className="w-[350px]"> <CardHeader> <CardTitle>Create project</CardTitle> <CardDescription>Deploy your new project in one-click.</CardDescription> </CardHeader> <CardContent> <form> <div className="grid w-full items-center gap-4"> <div className="flex flex-col space-y-1.5"> <Label htmlFor="name">Name</Label> <Input id="name" placeholder="Name of your project" /> </div> </div> </form> </CardContent> <CardFooter className="flex justify-between"> <Button variant="outline">Cancel</Button> <Button>Deploy</Button> </CardFooter> </Card> ) }

Dialog (Modal) Component

Installation:

npx shadcn@latest add dialog

Basic dialog:

import { Button } from "@/components/ui/button" import { Dialog, DialogContent, DialogDescription, DialogFooter, DialogHeader, DialogTitle, DialogTrigger, } from "@/components/ui/dialog"

export function DialogDemo() { return ( <Dialog> <DialogTrigger asChild> <Button variant="outline">Open Dialog</Button> </DialogTrigger> <DialogContent className="sm:max-w-[425px]"> <DialogHeader> <DialogTitle>Edit profile</DialogTitle> <DialogDescription> Make changes to your profile here. Click save when you're done. </DialogDescription> </DialogHeader> <div className="grid gap-4 py-4"> <div className="grid grid-cols-4 items-center gap-4"> <Label htmlFor="name" className="text-right"> Name </Label> <Input id="name" value="Pedro Duarte" className="col-span-3" /> </div> </div> <DialogFooter> <Button type="submit">Save changes</Button> </DialogFooter> </DialogContent> </Dialog> ) }

Sheet (Slide-over) Component

Installation:

npx shadcn@latest add sheet

Basic sheet:

import { Button } from "@/components/ui/button" import { Sheet, SheetContent, SheetDescription, SheetHeader, SheetTitle, SheetTrigger, } from "@/components/ui/sheet"

export function SheetDemo() { return ( <Sheet> <SheetTrigger asChild> <Button variant="outline">Open Sheet</Button> </SheetTrigger> <SheetContent> <SheetHeader> <SheetTitle>Edit profile</SheetTitle> <SheetDescription> Make changes to your profile here. Click save when you're done. </SheetDescription> </SheetHeader> <div className="grid gap-4 py-4"> <div className="grid grid-cols-4 items-center gap-4"> <Label htmlFor="name" className="text-right"> Name </Label> <Input id="name" value="Pedro Duarte" className="col-span-3" /> </div> <div className="grid grid-cols-4 items-center gap-4"> <Label htmlFor="username" className="text-right"> Username </Label> <Input id="username" value="@peduarte" className="col-span-3" /> </div> </div> </SheetContent> </Sheet> ) }

Sheet with side placement:

<Sheet> <SheetTrigger asChild> <Button variant="outline">Open Right Sheet</Button> </SheetTrigger> <SheetContent side="right"> <SheetHeader> <SheetTitle>Settings</SheetTitle> <SheetDescription> Configure your application settings here. </SheetDescription> </SheetHeader> {/* Settings content */} </SheetContent> </Sheet>

Menubar & Navigation

Menubar Component

Installation:

npx shadcn@latest add menubar

Basic menubar:

import { Menubar, MenubarContent, MenubarItem, MenubarMenu, MenubarSeparator, MenubarShortcut, MenubarSub, MenubarSubContent, MenubarSubTrigger, MenubarTrigger, } from "@/components/ui/menubar"

export function MenubarDemo() { return ( <Menubar> <MenubarMenu> <MenubarTrigger>File</MenubarTrigger> <MenubarContent> <MenubarItem> New Tab <MenubarShortcut>⌘T</MenubarShortcut> </MenubarItem> <MenubarItem> New Window <MenubarShortcut>⌘N</MenubarShortcut> </MenubarItem> <MenubarSeparator /> <MenubarItem>Share</MenubarItem> <MenubarSeparator /> <MenubarItem>Print</MenubarItem> </MenubarContent> </MenubarMenu> <MenubarMenu> <MenubarTrigger>Edit</MenubarTrigger> <MenubarContent> <MenubarItem> Undo <MenubarShortcut>⌘Z</MenubarShortcut> </MenubarItem> <MenubarItem> Redo <MenubarShortcut>⌘Y</MenubarShortcut> </MenubarItem> <MenubarSeparator /> <MenubarSub> <MenubarSubTrigger>Find</MenubarSubTrigger> <MenubarSubContent> <MenubarItem>Search the web</MenubarItem> <MenubarItem>Find...</MenubarItem> <MenubarItem>Find Next</MenubarItem> <MenubarItem>Find Previous</MenubarItem> </MenubarSubContent> </MenubarSub> </MenubarContent> </MenubarMenu> </Menubar> ) }

Select (Dropdown) Component

Installation:

npx shadcn@latest add select

Basic select:

import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue, } from "@/components/ui/select"

export function SelectDemo() { return ( <Select> <SelectTrigger className="w-[180px]"> <SelectValue placeholder="Select a fruit" /> </SelectTrigger> <SelectContent> <SelectItem value="apple">Apple</SelectItem> <SelectItem value="banana">Banana</SelectItem> <SelectItem value="orange">Orange</SelectItem> </SelectContent> </Select> ) }

Select in form:

<FormField control={form.control} name="role" render={({ field }) => ( <FormItem> <FormLabel>Role</FormLabel> <Select onValueChange={field.onChange} defaultValue={field.value}> <FormControl> <SelectTrigger> <SelectValue placeholder="Select a role" /> </SelectTrigger> </FormControl> <SelectContent> <SelectItem value="admin">Admin</SelectItem> <SelectItem value="user">User</SelectItem> <SelectItem value="guest">Guest</SelectItem> </SelectContent> </Select> <FormMessage /> </FormItem> )} />

Toast Notifications

Installation:

npx shadcn@latest add toast

Setup toast provider in root layout:

import { Toaster } from "@/components/ui/toaster"

export default function RootLayout({ children }) { return ( <html lang="en"> <body> {children} <Toaster /> </body> </html> ) }

Using toast:

import { useToast } from "@/components/ui/use-toast" import { Button } from "@/components/ui/button"

export function ToastDemo() { const { toast } = useToast()

return ( <Button onClick={() => { toast({ title: "Scheduled: Catch up", description: "Friday, February 10, 2023 at 5:57 PM", }) }} > Show Toast </Button> ) }

Toast variants:

// Success toast({ title: "Success", description: "Your changes have been saved.", })

// Error toast({ variant: "destructive", title: "Error", description: "Something went wrong.", })

// With action toast({ title: "Uh oh! Something went wrong.", description: "There was a problem with your request.", action: <ToastAction altText="Try again">Try again</ToastAction>, })

Table Component

Installation:

npx shadcn@latest add table

Basic table:

import { Table, TableBody, TableCaption, TableCell, TableHead, TableHeader, TableRow, } from "@/components/ui/table"

const invoices = [ { invoice: "INV001", status: "Paid", method: "Credit Card", amount: "$250.00" }, { invoice: "INV002", status: "Pending", method: "PayPal", amount: "$150.00" }, ]

export function TableDemo() { return ( <Table> <TableCaption>A list of your recent invoices.</TableCaption> <TableHeader> <TableRow> <TableHead>Invoice</TableHead> <TableHead>Status</TableHead> <TableHead>Method</TableHead> <TableHead className="text-right">Amount</TableHead> </TableRow> </TableHeader> <TableBody> {invoices.map((invoice) => ( <TableRow key={invoice.invoice}> <TableCell className="font-medium">{invoice.invoice}</TableCell> <TableCell>{invoice.status}</TableCell> <TableCell>{invoice.method}</TableCell> <TableCell className="text-right">{invoice.amount}</TableCell> </TableRow> ))} </TableBody> </Table> ) }

Customization

Theming with CSS Variables

shadcn/ui uses CSS variables for theming. Configure in globals.css :

@layer base { :root { --background: 0 0% 100%; --foreground: 222.2 84% 4.9%; --primary: 222.2 47.4% 11.2%; --primary-foreground: 210 40% 98%; --secondary: 210 40% 96.1%; --secondary-foreground: 222.2 47.4% 11.2%; --muted: 210 40% 96.1%; --muted-foreground: 215.4 16.3% 46.9%; --accent: 210 40% 96.1%; --accent-foreground: 222.2 47.4% 11.2%; --destructive: 0 84.2% 60.2%; --destructive-foreground: 210 40% 98%; --border: 214.3 31.8% 91.4%; --input: 214.3 31.8% 91.4%; --ring: 222.2 84% 4.9%; --radius: 0.5rem; }

.dark { --background: 222.2 84% 4.9%; --foreground: 210 40% 98%; --primary: 210 40% 98%; --primary-foreground: 222.2 47.4% 11.2%; /* ... other dark mode variables */ } }

Customizing Components

Since you own the code, customize directly:

// components/ui/button.tsx import * as React from "react" import { Slot } from "@radix-ui/react-slot" import { cva, type VariantProps } from "class-variance-authority" import { cn } from "@/lib/utils"

const buttonVariants = cva( "inline-flex items-center justify-center rounded-md text-sm font-medium transition-colors", { variants: { variant: { default: "bg-primary text-primary-foreground hover:bg-primary/90", destructive: "bg-destructive text-destructive-foreground hover:bg-destructive/90", outline: "border border-input bg-background hover:bg-accent", // Add custom variant custom: "bg-gradient-to-r from-purple-500 to-pink-500 text-white", }, size: { default: "h-10 px-4 py-2", sm: "h-9 rounded-md px-3", lg: "h-11 rounded-md px-8", // Add custom size xl: "h-14 rounded-md px-10 text-lg", }, }, defaultVariants: { variant: "default", size: "default", }, } )

export interface ButtonProps extends React.ButtonHTMLAttributes<HTMLButtonElement>, VariantProps<typeof buttonVariants> { asChild?: boolean }

const Button = React.forwardRef<HTMLButtonElement, ButtonProps>( ({ className, variant, size, asChild = false, ...props }, ref) => { const Comp = asChild ? Slot : "button" return ( <Comp className={cn(buttonVariants({ variant, size, className }))} ref={ref} {...props} /> ) } ) Button.displayName = "Button"

export { Button, buttonVariants }

Next.js Integration

App Router Setup

For Next.js 13+ with App Router, ensure components use "use client" directive:

// src/components/ui/button.tsx "use client"

import * as React from "react" import { Slot } from "@radix-ui/react-slot" import { cva, type VariantProps } from "class-variance-authority" import { cn } from "@/lib/utils"

// ... rest of component

Layout Integration

Add the Toaster to your root layout:

// app/layout.tsx import { Toaster } from "@/components/ui/toaster" import "./globals.css"

export default function RootLayout({ children, }: { children: React.ReactNode }) { return ( <html lang="en" suppressHydrationWarning> <body className="min-h-screen bg-background font-sans antialiased"> {children} <Toaster /> </body> </html> ) }

Server Components

When using shadcn/ui components in Server Components, wrap them in a Client Component:

// app/dashboard/page.tsx import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card" import { ButtonClient } from "@/components/ui/button-client"

export default function DashboardPage() { return ( <div className="container mx-auto p-6"> <Card> <CardHeader> <CardTitle>Dashboard</CardTitle> </CardHeader> <CardContent> <ButtonClient>Interactive Button</ButtonClient> </CardContent> </Card> </div> ) }

// src/components/ui/button-client.tsx "use client"

import { Button } from "./button"

export function ButtonClient(props: React.ComponentProps<typeof Button>) { return <Button {...props} /> }

Route Handlers with Forms

Create API routes for form submissions:

// app/api/contact/route.ts import { NextRequest, NextResponse } from "next/server" import { z } from "zod"

const contactSchema = z.object({ name: z.string().min(2), email: z.string().email(), message: z.string().min(10), })

export async function POST(request: NextRequest) { try { const body = await request.json() const validated = contactSchema.parse(body)

// Process form data
console.log("Form submission:", validated)

return NextResponse.json({ success: true })

} catch (error) { if (error instanceof z.ZodError) { return NextResponse.json( { errors: error.errors }, { status: 400 } ) }

return NextResponse.json(
  { error: "Internal server error" },
  { status: 500 }
)

} }

Form with Server Action

Using Next.js 14+ Server Actions:

// app/contact/page.tsx "use client"

import { zodResolver } from "@hookform/resolvers/zod" import { useForm } from "react-hook-form" import * as z from "zod" import { Button } from "@/components/ui/button" import { Form, FormControl, FormField, FormItem, FormLabel, FormMessage, } from "@/components/ui/form" import { Input } from "@/components/ui/input" import { Textarea } from "@/components/ui/textarea" import { toast } from "@/components/ui/use-toast"

const formSchema = z.object({ name: z.string().min(2), email: z.string().email(), message: z.string().min(10), })

async function onSubmit(values: z.infer<typeof formSchema>) { try { const response = await fetch("/api/contact", { method: "POST", headers: { "Content-Type": "application/json" }, body: JSON.stringify(values), })

if (!response.ok) throw new Error("Failed to submit")

toast({
  title: "Success!",
  description: "Your message has been sent.",
})

} catch (error) { toast({ variant: "destructive", title: "Error", description: "Failed to send message. Please try again.", }) } }

export default function ContactPage() { const form = useForm<z.infer<typeof formSchema>>({ resolver: zodResolver(formSchema), })

return ( <div className="container mx-auto max-w-2xl py-8"> <Form {...form}> <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-6"> <FormField control={form.control} name="name" render={({ field }) => ( <FormItem> <FormLabel>Name</FormLabel> <FormControl> <Input placeholder="Your name" {...field} /> </FormControl> <FormMessage /> </FormItem> )} />

      <FormField
        control={form.control}
        name="email"
        render={({ field }) => (
          <FormItem>
            <FormLabel>Email</FormLabel>
            <FormControl>
              <Input type="email" placeholder="your@email.com" {...field} />
            </FormControl>
            <FormMessage />
          </FormItem>
        )}
      />

      <FormField
        control={form.control}
        name="message"
        render={({ field }) => (
          <FormItem>
            <FormLabel>Message</FormLabel>
            <FormControl>
              <Textarea
                placeholder="Your message..."
                className="resize-none"
                {...field}
              />
            </FormControl>
            <FormMessage />
          </FormItem>
        )}
      />

      <Button type="submit" className="w-full">
        Send Message
      </Button>
    </form>
  </Form>
</div>

) }

Metadata with shadcn/ui

Using shadcn/ui components in metadata:

// app/layout.tsx import { Metadata } from "next"

export const metadata: Metadata = { title: { default: "My App", template: "%s | My App", }, description: "Built with shadcn/ui and Next.js", }

// app/about/page.tsx import { Metadata } from "next" import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card"

export const metadata: Metadata = { title: "About Us", description: "Learn more about our company", }

export default function AboutPage() { return ( <div className="container mx-auto py-8"> <Card> <CardHeader> <CardTitle>About Our Company</CardTitle> </CardHeader> <CardContent> <p>We build amazing products with modern web technologies.</p> </CardContent> </Card> </div> ) }

Font Optimization

Optimize fonts with next/font:

// app/layout.tsx import { Inter } from "next/font/google" import { Toaster } from "@/components/ui/toaster" import { cn } from "@/lib/utils" import "./globals.css"

const inter = Inter({ subsets: ["latin"] })

export default function RootLayout({ children, }: { children: React.ReactNode }) { return ( <html lang="en" suppressHydrationWarning> <body className={cn("min-h-screen bg-background font-sans antialiased", inter.className)}> {children} <Toaster /> </body> </html> ) }

Advanced Patterns

Form with Multiple Fields

const formSchema = z.object({ username: z.string().min(2).max(50), email: z.string().email(), bio: z.string().max(160).min(4), role: z.enum(["admin", "user", "guest"]), notifications: z.boolean().default(false), })

export function AdvancedForm() { const form = useForm<z.infer<typeof formSchema>>({ resolver: zodResolver(formSchema), defaultValues: { username: "", email: "", bio: "", role: "user", notifications: false, }, })

function onSubmit(values: z.infer<typeof formSchema>) { console.log(values) }

return ( <Form {...form}> <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-8"> {/* Username field */} <FormField control={form.control} name="username" render={({ field }) => ( <FormItem> <FormLabel>Username</FormLabel> <FormControl> <Input placeholder="johndoe" {...field} /> </FormControl> <FormMessage /> </FormItem> )} />

    {/* Email field */}
    <FormField
      control={form.control}
      name="email"
      render={({ field }) => (
        <FormItem>
          <FormLabel>Email</FormLabel>
          <FormControl>
            <Input type="email" placeholder="john@example.com" {...field} />
          </FormControl>
          <FormMessage />
        </FormItem>
      )}
    />

    {/* Textarea field */}
    <FormField
      control={form.control}
      name="bio"
      render={({ field }) => (
        <FormItem>
          <FormLabel>Bio</FormLabel>
          <FormControl>
            <Textarea
              placeholder="Tell us about yourself"
              className="resize-none"
              {...field}
            />
          </FormControl>
          <FormMessage />
        </FormItem>
      )}
    />

    {/* Select field */}
    <FormField
      control={form.control}
      name="role"
      render={({ field }) => (
        <FormItem>
          <FormLabel>Role</FormLabel>
          <Select onValueChange={field.onChange} defaultValue={field.value}>
            <FormControl>
              <SelectTrigger>
                <SelectValue placeholder="Select a role" />
              </SelectTrigger>
            </FormControl>
            <SelectContent>
              <SelectItem value="admin">Admin</SelectItem>
              <SelectItem value="user">User</SelectItem>
              <SelectItem value="guest">Guest</SelectItem>
            </SelectContent>
          </Select>
          <FormMessage />
        </FormItem>
      )}
    />

    {/* Checkbox field */}
    <FormField
      control={form.control}
      name="notifications"
      render={({ field }) => (
        <FormItem className="flex flex-row items-start space-x-3 space-y-0">
          <FormControl>
            <Checkbox
              checked={field.value}
              onCheckedChange={field.onChange}
            />
          </FormControl>
          <div className="space-y-1 leading-none">
            <FormLabel>Email notifications</FormLabel>
            <FormDescription>
              Receive emails about your account activity.
            </FormDescription>
          </div>
        </FormItem>
      )}
    />

    <Button type="submit">Submit</Button>
  </form>
</Form>

) }

Best Practices

• Accessibility: Components use Radix UI primitives for ARIA compliance

• Customization: Modify components directly in your codebase

• Type Safety: Use TypeScript for type-safe props and state

• Validation: Use Zod schemas for form validation

• Styling: Leverage Tailwind utilities and CSS variables

• Consistency: Use the same component patterns across your app

• Testing: Components are testable with React Testing Library

• Performance: Components are optimized and tree-shakeable

Common Component Combinations

Login Form

<Card className="w-[350px]"> <CardHeader> <CardTitle>Login</CardTitle> <CardDescription>Enter your credentials to continue</CardDescription> </CardHeader> <CardContent> <Form {...form}> <form onSubmit={form.handleSubmit(onSubmit)} className="space-y-4"> <FormField control={form.control} name="email" render={({ field }) => ( <FormItem> <FormLabel>Email</FormLabel> <FormControl> <Input type="email" placeholder="you@example.com" {...field} /> </FormControl> <FormMessage /> </FormItem> )} /> <FormField control={form.control} name="password" render={({ field }) => ( <FormItem> <FormLabel>Password</FormLabel> <FormControl> <Input type="password" {...field} /> </FormControl> <FormMessage /> </FormItem> )} /> <Button type="submit" className="w-full">Login</Button> </form> </Form> </CardContent> </Card>

References

• Official Docs: https://ui.shadcn.com

• Radix UI: https://www.radix-ui.com

• React Hook Form: https://react-hook-form.com

• Zod: https://zod.dev

• Tailwind CSS: https://tailwindcss.com

• Examples: https://ui.shadcn.com/examples