Currently in my Vue.js project, I am showing the 404 page when a route parameter is invalid by using this code:
this.$router.replace({ path: '/404' });
Is there a way to achieve this without changing the URL? I want users to be able to copy the original URL from the browser. Is there an option like silent: true that can help with this?
When utilizing vue-router, the URL serves as the ultimate truth. Any modifications to the URL will directly impact the rendering of the page. There is no option to "pause" the router's functionality, which can be seen as a drawback in vue-router. Nevertheless, there is a workaround that allows you to display a 404 page without altering the route.
To achieve this, you can create a data property called display404 within your main component. By setting this property to true, you can manually showcase the 404 page in the template instead of using the <router-view> element, like so:
<div>
<my-404-page v-if="display404"/>
<router-view v-else/>
</div>
If you need to display the 404 page from any other component, you can simply execute the following JavaScript code:
this.$root.display404 = true
This example provides a basic illustration of how to implement this feature. Depending on your requirements, you may choose to utilize Vuex for state management, an event bus, or adopt an alternative approach that better suits your needs.
To create your NotFound route, follow this format:
{
path: '/:pathMatch(.*)*',
name: 'NotFound',
component: NotFound
},
You can then implement a beforeEnter navigation guard for your dynamic Vue instance like this:
// Inside your router/index.js file...
{
path: 'users/:id',
name: 'User Detail',
component: UserDetail,
beforeEnter(to, from) {
// Check if the specified query exists in your data...
const exists = data.users.find(
user => user.id === parseInt(to.params.id)
)
if (!exists) {
// CRUCIAL STEP
// Redirect to the not found view...
return {
name: 'NotFound',
// Retain the path of the current page and keep the same URL...
params: { pathMatch: to.path.split('/').slice(1) },
// ...along with the same query and hash.
query: to.query,
hash: to.hash,
}
}
}
}
I haven't tested this in a Component yet, but I believe the logic would be similar in the beforeRouteEnter navigation guard.
I'm not completely certain about the specifics of your question, but could either of these suggestions be helpful to you?
One option is to implement a catch all route: You can find more information in the Vue.js docs under "Catch all route"
Alternatively, if you are dealing with handling responses from a call (such as a method or fetch): consider using try/catch combined with a "loading" data value to control the display or switch between components.
After reviewing Decade Moon's approach, I implemented the following solution:
main.js
import Error404 from './views/error/404.vue'
Vue.component('error-404', Error404)
404.vue
<template>
<div>
<h1>Page not found</h1>
<p>Whatever...</p>
</div>
</template>
<script>
export default {
name: 'Page not found'
}
</script>
router --> index.js
const PageNotFound = () => import('@/views/error/404')
function configRoutes() {
return [
{
path: '/',
name: 'Home',
component: TheContainer,
children: [
// ...
{
path: '404',
name: 'Page not found',
component: PageNotFound,
alias: '*'
}
]
}
]
}
Custom Page for Displaying the 404 error
<template>
<div class="animated fadeIn" v-if="clientSettings">
...
</div>
<error-404 v-else></error-404>
</template>
<script>
export default {
name: 'Test',
data() {
return {
clientSettings: null
};
},
async created() {
this.setClientConfig();
},
watch: {
'$route.params.id': function (id) { this.setClientConfig(id);}
},
methods: {
setClientConfig(id) {
if (!id) {
id = this.$route.params.id;
// Redirect to the first valid list, if no parameter is provided
if (!id) {
this.$router.push({ name: 'Test', params: { id: this.$root.clientConfiguration[0].name } });
return;
}
}
// Set client settings
this.clientSettings = this.$root.clientConfiguration.find(cc => cc.name === id);
// If no entry was found, the template will display the 404 error
}
}
}
</script>
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