Without this change when using UrlTree redirects in `urlUpdateStrategy="eager"`, the URL would get updated to the target location, then redirected. This resulted in having an additional entry in the `history` and thus the `back` button would be broken (going back would land on the URL causing a new redirect).
Additionally, there was a bug where the redirect, even without `urlUpdateStrategy="eager"`, could create a history with too many entries. This was due to kicking off a new navigation within the navigation cancelling logic. With this PR the new navigation is pushed to the next tick with a `setTimeout`, allowing the page being redirected from to be cancelled before starting a new navigation.
Related to #27148
PR Close#31168
In some cases where multiple navigations happen to the same URL, the router will not process a given URL. In those cases, we fall into logic that resets state for the next navigation. One piece of this resetting is to set the `browserUrlTree` to the most recent `urlAfterRedirects`i.
However, there was bug in this logic because in some cases the `urlAfterRedirects` is a stale value. This happens any time a URL won't be processed, and the previous URL will also not be processed. This creates unpredictable behavior, not the least of which ends up being a broken `back` button.
This PR kicks off new navigations with the current value the router assumes is in the browser. All the logic around how to handle future navigations is based on this value compared to the current transition, so it's important to kick off all new navigations with the current value so in the edge case described above we don't end up with an old value being set into `browserUrlTree`.
Fixes#30340
Related to #30160
PR Close#30344
There was a problem with a combination of the `eager` URL update, browser `back` button, and hybrid applications. Details provided in internal ticket http://b/123667227.
This fix handles the problem by setting `router.browserUrlTree` when all conditions have failed, meaning the browser doesn't do anything with the navigation other than update internal data structures. Without this change, the problem was an old value was stored in `router.broserUrlTree` causing some new navigations to be compared to an old value and breaking future navigations.
PR Close#30160
Prior to this change, if a navigation was ongoing and a new one came in, the router could get into a state where `router.currentNavigation` was `null` even though a navigation was executing. This change moves where we set the `currentNavigation` value so it's inside a `switchMap`. This solves the problem because the `finally` on the `switchMap` had been setting `currentNavigation` to `null` but the new `currentNavigation` value would have already been set. Essentially this was a timing problem and is resolved with this change.
Fixes#29389#29590
PR Close#29636
When a UrlTree of root url was returned by a guard as a redirection, the
navigation was not processed. The issue came from the error handler which
incorrectly marked the router as already navigated.
Fixes#27845
PR Close#28271
With #27680, a bug was fixed where multiple redirects using `eager` URL update could cause navigation to fail. However, that fix introduced a problem where with `skipLocationChange` enabled, the URL tree rendered was not properly stored for reference. This specifically caused an issue with named router outlets and subsequent navigations not being recognized.
This PR stores the correct `UrlTree` for reference with later navigations. It fixes the regression introdued with #27680.
Fixes#28200
PR Close#28300
Previously when testing code injected the Compiler, it received the
top-level Compiler implementation defined in linker/compiler.ts
(and governed by the __PRE_R3__ switch). Code running under the
TestBed, however, should always use a TestBed-aware Compiler
implementation.
This commit adds such an implementation to the TestBedRender3,
which passes compiled modules through the _compileNgModule()
function.
With this change, 3 formerly disabled router integration tests
now pass.
FW-855 #resolve
PR Close#28033
Previously, we had the logic to schedule a change detection tick
inside markViewDirty(). This is fine when used in markDirty(),
the user-facing API, because it should always schedule change
detection. However, this doesn't work when used in markForCheck()
because historically markForCheck() does not trigger change
detection.
To be backwards compatible, this commit moves the scheduling
logic out of markViewDirty() and into markDirty(), so
markForCheck no longer triggers a tick.
PR Close#28048
Navigating to a route such as `/users`, you may get redirected to `/login`. Previously, if you go then route to `/users` again the URL will end up showing `/users` after the second redirect. This only happened in `UrlUpdateStrategy="eager"`. This is now fixed so after the second redirect, the URL shows the correct page.
Fixes#27116
PR Close#27523
This option means guards and resolvers will ignore changes when a provided predicate function returns `false`. This supports use cases where an application needs to ignore some param updates but not others. For example, changing a sort param in the URL might need to be ignored, whereas changing the a `project` param might require re-run of guards and resolvers.
Related to #26861#18253#27464
PR Close#27682
It looks like `fixmeIvy` imports were accidentally removed from Router integration tests, thus causing build errors. The necessary imports are now restored and the project should build normally.
PR Close#27720
`NgModule` requires that `Component`s/`Directive`s/`Pipe`s are listed in
declarations, and that each `Component`s/`Directive`s/`Pipe` is declared
in exactly one `NgModule`. This change adds runtime checks to ensure
that these sementics are true at runtime.
There will need to be seperate set of checks for the AoT path of the
codebase to verify that same set of semantics hold. Due to current
design there does not seem to be an easy way to share the two checks
because JIT deal with references where as AoT deals with AST nodes.
PR Close#27604
Navigating to a route such as `/users`, you may get redirected to `/login`. Previously, if you go then route to `/users` again the URL will end up showing `/users` after the second redirect. This only happened in `UrlUpdateStrategy="eager"`. This is now fixed so after the second redirect, the URL shows the correct page.
Fixes#27116
PR Close#27523
This option means guards and resolvers will ignore changes to matrix parameters. Guards and resolvers will be rerun when the path changes, when path parameters change, or when query parameters change.
The primary use case for such a mode is when updating the UI and getting the URL to be in sync with local changes. For example, if displaying a sortable table, changing the sort direction is often handled by the table itself. But you would want to update the URL to be in sync with what's being displayed to the user. As long as the table sort direction is stored as a matrix parameter, you can use this option to update the URL without causing the overhead of re-running guards and resolvers.
Related to #26861#18253
PR Close#27464
BREAKING CHANGE:
The public API for `DebugNode` was accidentally too broad. This change removes
1. Public constructor. Since `DebugNode` is a way for Angular to communicate information
on to the developer there is no reason why the developer should ever need to
Instantiate the `DebugNode`
2. We are also removing `removeChild`, `addChild`, `insertBefore`, and `insertChildAfter`.
All of these methods are used by Angular to constructor the correct `DebugNode` tree.
There is no reason why the developer should ever be constructing a `DebugNode` tree
And these methods should have never been made public.
3. All properties have been change to `readonly` since `DebugNode` is used by Angular
to communicate to developer and there is no reason why these APIs should be writable.
While technically breaking change we don’t expect anyone to be effected by this change.
PR Close#27223
This option means guards and resolvers will ignore changes to optional
parameters such as query and matrix params. When the path or any path
params change, guards and resolvers will be run
Related to discussion in #18253
FW-560 #resolve
PR Close#26861
This is a major refactor of how the router previously worked. There are a couple major advantages of this refactor, and future work will be built on top of it.
First, we will no longer have multiple navigations running at the same time. Previously, a new navigation wouldn't cause the old navigation to be cancelled and cleaned up. Instead, multiple navigations could be going at once, and we imperatively checked that we were operating on the most current `router.navigationId` as we progressed through the Observable streams. This had some major faults, the biggest of which was async races where an ongoing async action could result in a redirect once the async action completed, but there was no way to guarantee there weren't also other redirects that would be queued up by other async actions. After this refactor, there's a single Observable stream that will get cleaned up each time a new navigation is requested.
Additionally, the individual pieces of routing have been pulled out into their own operators. While this was needed in order to create one continuous stream, it also will allow future improvements to the testing APIs as things such as Guards or Resolvers should now be able to be tested in much more isolation.
* Add the new `router.transitions` observable of the new `NavigationTransition` type to contain the transition information
* Update `router.navigations` to pipe off of `router.transitions`
* Re-write navigation Observable flow to a single configured stream
* Refactor `switchMap` instead of the previous `mergeMap` to ensure new navigations cause a cancellation and cleanup of already running navigations
* Wire in existing error and cancellation logic so cancellation matches previous behavior
PR Close#25740
Alex Rickabaugh
Jason Aden
Pawel Kozlowski
stoneLeaf
kevinphelps
Kara Erickson
Marc Laval
Miško Hevery
Matias Niemelä
Andrew Kushnir
Sarun Intaralawan