Nuxt/docs/content/3.api/3.utils/define-page-meta.md

title
definePageMeta

definePageMeta

definePageMeta is a compiler macro that you can use to set metadata for your page components located in the pages/ directory (unless set otherwise). This way you can set custom metadata for each static or dynamic route of your Nuxt application.

<script setup>
  definePageMeta({
    title: 'Articles'
  })
</script>

::ReadMore{link="/guide/directory-structure/pages/#page-metadata"} ::

Type

definePageMeta(meta: PageMeta) => void

interface PageMeta {
  validate?: (route: RouteLocationNormalized) => boolean | Promise<boolean> | Partial<NuxtError> | Promise<Partial<NuxtError>>
  redirect?: RouteRecordRedirectOption
  alias?: string | string[]
  pageTransition?: boolean | TransitionProps
  layoutTransition?: boolean | TransitionProps
  key?: false | string | ((route: RouteLocationNormalizedLoaded) => string)
  keepalive?: boolean | KeepAliveProps
  layout?: false | LayoutKey | Ref<LayoutKey> | ComputedRef<LayoutKey>
  middleware?: MiddlewareKey | NavigationGuard | Array<MiddlewareKey | NavigationGuard>
  [key: string]: any
}

Parameters

meta

• Type: PageMeta

  An object accepting the following page metadata:

  alias

  • Type: string | string[]

    Aliases for the record. Allows defining extra paths that will behave like a copy of the record. Allows having paths shorthands like /users/:id and /u/:id. All alias and path values must share the same params.

  keepalive

  • Type: boolean | KeepAliveProps

    Set to true when you want to preserve page state across route changes or use the KeepAliveProps for a fine-grained control.

  key

  • Type: false | string | ((route: RouteLocationNormalizedLoaded) => string)

    Set key value when you need more control over when the <NuxtPage> component is re-rendered.

  layout

  • Type: false | LayoutKey | Ref<LayoutKey> | ComputedRef<LayoutKey>

    Set a static or dynamic name of the layout for each route. This can be set to false in case the default layout needs to be disabled.

  layoutTransition

  • Type: boolean | TransitionProps

    Set name of the transition to apply for current layout. You can also set this value to false to disable the layout transition.

  middleware

  • Type: MiddlewareKey | NavigationGuard | Array<MiddlewareKey | NavigationGuard>

    Define anonymous or named middleware directly within definePageMeta. Learn more about route middleware.

  pageTransition

  • Type: boolean | TransitionProps

    Set name of the transition to apply for current page. You can also set this value to false to disable the page transition.

  redirect

  • Type: RouteRecordRedirectOption

    Where to redirect if the route is directly matched. The redirection happens before any navigation guard and triggers a new navigation with the new target location.

  validate

  • Type: (route: RouteLocationNormalized) => boolean | Promise<boolean> | Partial<NuxtError> | Promise<Partial<NuxtError>>

    Validate whether a given route can validly be rendered with this page. Return true if it is valid, or false if not. If another match can't be found, this will mean a 404. You can also directly return an object with statusCode/statusMessage to respond immediately with an error (other matches will not be checked).

  [key: string]

  • Type: any

    Apart from the above properties, you can also set custom metadata. You may wish to do so in a type-safe way by augmenting the type of the meta object.

Examples

Basic Usage

The example below demonstrates:

• how key can be a function that returns a value;
• how keepalive property makes sure that the <modal> component is not cached when switching between multiple components;
• adding pageType as a custom property:

<script setup>
  definePageMeta({
    key: (route) => route.fullPath,

    keepalive: {
      exclude: ['modal']
    },

    pageType: 'Checkout'
  })
</script>

Defining Middleware

The example below shows how the middleware can be defined using a function directly within the definePageMeta or set as a string that matches the middleware file name located in the middleware/ directory:

<script setup>
  definePageMeta({
    // define middleware as a function
    middleware: [
      function (to, from) {
        const auth = useState('auth')

        if (!auth.value.authenticated) {
            return navigateTo('/login')
        }

        return navigateTo('/checkout')
      }
    ],

    // ... or a string
    middleware: 'auth'

    // ... or multiple strings
    middleware: ['auth', 'another-named-middleware']
})
</script>

Defining Layout

You can define the layout that matches the layout's file name located (by default) in the layouts/ directory. You can also disable the layout by setting the layout to false:

<script setup>
  definePageMeta({
    // set custom layout
    layout: 'admin'

    // ... or disable a default layout
    layout: false
  })
</script>