Param not present when redirecting multiple times

[adam-lynch]

Version

2.7.0

Reproduction link

https://codesandbox.io/embed/xokkpop154?module=%2Frouter%2Findex.js

Steps to reproduce

1. Create a route definition for / which redirects to /a
2. Create a route definition for /a which redirects to /a/b/1.
3. Create a route definition for /a/b/:id which redirects to /a/b/:id/c.
4. Create a route definition for /a/b/:id/c which points to a component.
5. Navigate to / using your browser's address bar.

What is expected?

You end up at /a/b/1/c.

What is actually happening?

You end up at /a/b/undefined/c.

---

If using a function in step 3, params is an empty object.

If you go directly to a/b/1, it works correctly.

[posva]

Thanks, for the moment, you can use a redirect object to not lose the params: redirect: { name: 'f', params: {id: 1}}

the problem seems to be that the parameter being passed to the redirect is just the from location but not the to location

[rdhainaut]

I have encountered a limitation from this bug.
I add this scenario to add an context.
I have an vue js app with multiples routes and the locale in the URL.

Note: English (en) is my default locale.

"vue": "^2.6.10",
"vue-router": "^3.1.2"

Expectations

• "http://mydomain.com/" should redirect to "http://mydomain.com/en/home"
• "http://mydomain.com/en" should redirect to "http://mydomain.com/en/home"
• "http://mydomain.com/fr" should redirect to "http://mydomain.com/fr/home"

const DEFAULT_LOCALE = "en";

const routes: RouteConfig[] = [
  { path: "home", component: HomePage, name: "home" },
  { path: "", redirect: "home", name: "default" }
];

const localizedRoutes: RouteConfig[] = [
  {
    path: "/",
    redirect: `/${DEFAULT_LOCALE}`
  },
  {
    path: "/:locale([A-Za-z]{2})",
    component: AppInternationalization, // template: `<router-view></router-view>`
    children: routes
  }
];

Current behavior

• "http://mydomain.com/" crash (blank page) with this warning message
  [vue-router] missing param for redirect route with path "/:locale([A-Za-z]{2})/home": Expected "locale" to be defined
• "http://mydomain.com/en" works and redirect to "http://mydomain.com/en/home"
• "http://mydomain.com/fr" works and redirect to "http://mydomain.com/fr/home"

Workaround

if i apply the above workaround as explained below :
Note: I m limited because i cannot (or dont know) how to retrieve the current this.$route.params.locale from this file because i m not in "Vue context" so instead I use the default locale

const routes: RouteConfig[] = [
  { path: "home", component: HomePage, name: "home" },
  { path: "", redirect: { name: "buy", params: { locale: DEFAULT_LOCALE } }, name: "default" } // Workaround: See https://github.com/vuejs/vue-router/issues/1762
];

Workaround behavior

• "http://mydomain.com/" works and redirects to "http://mydomain.com/en/home"
• "http://mydomain.com/en" works and redirect to "http://mydomain.com/en/home"
• "http://mydomain.com/fr" does nt works and redirect to "http://mydomain.com/en/home"

Any idea how to resolve this with the current behavior

[yoyo930021]

I have the same problem,
and I will try to use workaround.
But the workaround is broken on now.
params will get {}

I replace redirect to beforeEnter at the end.

Reproduction link

https://codesandbox.io/s/vue-template-6fznn