mirror of
https://github.com/nuxt/nuxt.git
synced 2024-11-16 02:44:51 +00:00
77 lines
2.5 KiB
Markdown
77 lines
2.5 KiB
Markdown
# `addRouteMiddleware`
|
|
|
|
`addRouteMiddleware()` is a helper function to dynamically add route middleware in your Nuxt application.
|
|
|
|
::alert{type=info}
|
|
Route middleware are navigation guards stored in the [`middleware/`](/guide/directory-structure/middleware) directory of your Nuxt application (unless [set otherwise](/api/configuration/nuxt.config#middleware)).
|
|
::
|
|
|
|
## Usage
|
|
|
|
```js
|
|
addRouteMiddleware (name: string | RouteMiddleware, middleware?: RouteMiddleware, options: AddRouteMiddlewareOptions = {})
|
|
```
|
|
|
|
`addRouteMiddleware()` takes three arguments:
|
|
|
|
- **name** `type: string | RouteMiddleware`
|
|
|
|
`name` can be either a string or a function of type `RouteMiddleware`. Function takes the next route `to` as the first argument and the current route `from` as the second argument, both of which are Vue route objects.
|
|
|
|
Learn more about available properties of [route objects](/api/composables/use-route).
|
|
|
|
- **middleware** `type: RouteMiddleware`
|
|
|
|
The second argument is a function of type `RouteMiddleware`. Same as above, it provides `to` and `from` route objects. It becomes optional if the first argument in `addRouteMiddleware()` is already passed as a function.
|
|
|
|
- **options** `type: AddRouteMiddlewareOptions`
|
|
|
|
An optional `options` argument lets you set the value of `global` to `true` to indicate whether the router middleware is global or not (set to `false` by default).
|
|
|
|
## Examples
|
|
|
|
### Anonymous Route Middleware
|
|
|
|
Anonymous route middleware does not have a name. It takes a function as the first argument, making the second `middleware` argument redundant:
|
|
|
|
```ts [plugins/my-plugin.ts]
|
|
export default defineNuxtPlugin(() => {
|
|
addRouteMiddleware((to, from) => {
|
|
if (to.path === '/forbidden') {
|
|
return false
|
|
}
|
|
})
|
|
})
|
|
```
|
|
|
|
### Named Route Middleware
|
|
|
|
Named route middleware takes a string as the first argument and a function as the second.
|
|
|
|
When defined in a plugin, it overrides any existing middleware of the same name located in the `middleware/` directory:
|
|
|
|
```ts [plugins/my-plugin.ts]
|
|
export default defineNuxtPlugin(() => {
|
|
addRouteMiddleware('named-middleware', () => {
|
|
console.log('named middleware added in Nuxt plugin')
|
|
})
|
|
})
|
|
```
|
|
|
|
### Global Route Middleware
|
|
|
|
You can set an optional, third argument `{ global: true }` to indicate whether the route middleware is global:
|
|
|
|
```ts [plugins/my-plugin.ts]
|
|
export default defineNuxtPlugin(() => {
|
|
addRouteMiddleware('global-middleware', (to, from) => {
|
|
console.log('global middleware that runs on every route change')
|
|
},
|
|
{ global: true }
|
|
)
|
|
})
|
|
```
|
|
|
|
::ReadMore{link="/guide/features/routing"}
|
|
::
|