Redirects

Redirects can be done via guards or explicitly via the redirect property in the route.

Define redirect manually

tip

Use when redirect is completely static

import { SpaRouterModule } from '@tramvai/modules-router';

createApp({
  modules: [
    SpaRouterModule.forRoot([{
      name: 'redirect',
      path: '/from/',
      redirect: '/to/',
    }]),
  ],
});

Redirect in Guard

tip

Use when redirect logic is global and complex

import { provide } from '@tramvai/core';
import { ROUTER_GUARD_TOKEN } from '@tramvai/module-router';

const provider = provide({
  provide: ROUTER_GUARD_TOKEN,
  useValue: async ({ to }) => {
    if (to && to.path === '/from/') {
      return '/to/';
    }
  },
});

Redirect in Action

tip

Use when redirect logic is complex and local for one or a few pages

For example, you make a important request in action, and if this request fails, application need to redirect to another page. If you want to prevent page component rendering and force redirect, you can throw RedirectFoundError from @tinkoff/errors library:

import { declareAction } from '@tramvai/core';
import { RedirectFoundError } from '@tinkoff/errors';
import { RESPONSE_MANAGER_TOKEN } from '@tramvai/tokens-common';

const redirectAction = declareAction({
  name: 'redirectAction',
  async fn() {
    throw new RedirectFoundError({ nextUrl: '/to/' });
  },
});

const RedirectPage = () => <h1>Redirect Page</h1>;

RedirectPage.actions = [redirectAction];

export default RedirectPage;

Redirect in CommandLineRunner

tip

Use when redirect logic is complex and common for all pages

For example, you want to check some cookie, and if this cookie does not exist, application need to redirect to another page. If you want to prevent page component rendering and force redirect, you can throw RedirectFoundError from @tinkoff/errors library:

import { commandLineListTokens, provide } from '@tramvai/core';
import { COOKIE_MANAGER_TOKEN } from '@tramvai/tokens-common';
import { RedirectFoundError } from '@tinkoff/errors';

createApp({
  providers: [
    provide({
      provide: commandLineListTokens.customerStart,
      useFactory: ({ cookieManager }) => {
        return function readCustomCookie() {
          if (!cookieManager.get('someSessionCookie')) {
            throw new RedirectFoundError({ nextUrl: '/login/' });
          }
        };
      },
      deps: {
        cookieManager: COOKIE_MANAGER_TOKEN,
      },
    }),
  ],
});