abort-navigation.md

title
abortNavigation

abortNavigation

abortNavigation is a helper function that prevents navigation from taking place and throws an error if one is set as a parameter.

::alert{type="warning"} abortNavigation is only usable inside a route middleware handler. ::

Type

abortNavigation(err?: Error | string): false

Parameters

err

• Type: Error | string

  Optional error to be thrown by abortNavigation.

Examples

The example below shows how you can use abortNavigation in a route middleware to prevent unauthorized route access:

export default defineNuxtRouteMiddleware((to, from) => {
  const user = useState('user')

  if (!user.value.isAuthorized) {
    return abortNavigation()
  }
 
  if (from.path !== '/edit-post') {
    return navigateTo('/edit-post')
  }
})

err as a String

You can pass the error as a string:

export default defineNuxtRouteMiddleware((to, from) => {
  const user = useState('user')

  if (!user.value.isAuthorized) {
    return abortNavigation('Insufficient permissions.')
  }
})

err as an Error Object

You can pass the error as an Error object, e.g. caught by the catch-block:

export default defineNuxtRouteMiddleware((to, from) => {
  try {
    /* code that might throw an error */
  } catch (err) {
    return abortNavigation(err)
  }
})