The `createOrReuseChildren` function calls shouldReuseRoute with the
previous child values use as the future and the future child value used
as the current argument. This is incosistent with the argument order in
`createNode`. This inconsistent order can make it difficult/impossible
to correctly implement the `shouldReuseRoute` function. Usually this
order doesn't matter because simple equality checks are made on the
args and it doesn't matter which is which.
More detail can be found in the bug report: #16192.
Fix#16192
BREAKING CHANGE: This change corrects the argument order when calling
RouteReuseStrategy#shouldReuseRoute. Previously, when evaluating child
routes, they would be called with the future and current arguments would
be swapped. If your RouteReuseStrategy relies specifically on only the future
or current snapshot state, you may need to update the shouldReuseRoute
implementation's use of "future" and "current" ActivateRouteSnapshots.
PR Close#26949
This commit adds `ngDevMode` guard to throw some errors only in dev mode
The ngDevMode flag helps to tree-shake these error messages from production
builds (in dev mode everything will work as it works right now) to decrease
production bundle size.
PR Close#38674
This change contains the test from #38780 and also removes `defer` from
the `apply_redirects` logic because the change that introduced
`concatMap` instead of `map`...`concatAll` makes `defer` unnecessary.
PR Close#38781
In most browsers, clicking links with the Alt key has a special behavior, for example, Chrome
downloads the target resource. As with other modifier keys, the router should stop the original
navigation to avoid preventing the browser’s default behavior.
When users click a link while holding the Alt key together, the browsers behave as follows.
Windows 10:
| Browser | Behavior |
|:-----------|:--------------------------------------------|
| Chrome 84 | Download the target resource |
| Firefox 79 | Prevent navigation and therefore do nothing |
| Edge 84 | Download the target resource |
| IE 11 | No impact |
macOS Catalina:
| Browser | Behavior |
|:-----------|:--------------------------------------------|
| Chrome 84 | Download the target resource |
| Firefox 79 | Prevent navigation and therefore do nothing |
| Safari 13 | Download the target resource |
PR Close#38375
In general, the router only matches and loads a single Route config tree. However,
named outlets with empty paths are a special case where the router can
and should actually match two different `Route`s and ensure that the
modules are loaded for each match.
This change updates the "ApplyRedirects" stage to ensure that named
outlets with empty paths finish loading their configs before proceeding
to the next stage in the routing pipe. This is necessary because if the
named outlet has `loadChildren` but the associated lazy config is not loaded
before following stages attempt to match and activate relevant `Route`s,
an error will occur.
fixes#12842
PR Close#38379
In general, the router only matches and loads a single Route config tree. However,
named outlets with empty paths are a special case where the router can
and should actually match two different `Route`s and ensure that the
modules are loaded for each match.
This change updates the "ApplyRedirects" stage to ensure that named
outlets with empty paths finish loading their configs before proceeding
to the next stage in the routing pipe. This is necessary because if the
named outlet has `loadChildren` but the associated lazy config is not loaded
before following stages attempt to match and activate relevant `Route`s,
an error will occur.
fixes#12842
PR Close#38379
This commit introduces a new subscription in the `routerLinkActive` directive which triggers an update
when any of its associated routerLinks have changes. `RouterLinkActive` not only needs to know when
links are added or removed, but it also needs to know about if a link it already knows about
changes in some way.
Quick note that `from...mergeAll` is used instead of just a simple
`merge` (or `scheduled...mergeAll`) to avoid introducing new rxjs
operators in order to keep bundle size down.
Fixes#18469
PR Close#38511
This commit introduces a new subscription in the `routerLinkActive` directive which triggers an update
when any of its associated routerLinks have changes. `RouterLinkActive` not only needs to know when
links are added or removed, but it also needs to know about if a link it already knows about
changes in some way.
Quick note that `from...mergeAll` is used instead of just a simple
`merge` (or `scheduled...mergeAll`) to avoid introducing new rxjs
operators in order to keep bundle size down.
Fixes#18469
PR Close#38349
The `@HostListener` functions and lifecycle hooks aren't intended to be public API but
do need to appear in the `.d.ts` files or type checking will break. Adding the
nodoc annotation will correctly hide this function on the docs site.
Again, note that `@internal` cannot be used because the result would be
that the functions then do not appear in the `.d.ts` files. This would
break lifecycle hooks because the class would be seen as not
implementing the interface correctly. This would also break
`HostListener` because the compiled templates would attempt to call the
`onClick` functions, but those would also not appear in the `d.ts` and
would produce errors like "Property 'onClick' does not exist on type 'RouterLinkWithHref'".
PR Close#38448
When navigations coming from Angular router we may have a payload stored in state property. When this
exists, set extras's state to the payload.
PR Close#28176
Defer loading the wildcard module so that it is not loaded until
subscribed to. This fixes an issue where it was being eagerly loaded.
As an example, wildcard module loading should only occur after all other potential
matches have been exhausted. A test case for this was also added to
demonstrate the fix.
Fixes#25494
PR Close#38348
Previously, the `ngOnDestroy` method called `unsubscribe` regardless of if `subscription` had
been initialized. This can lead to an error attempting to call `unsubscribe` of undefined.
This change prevents this error, and instead only attempts `unsubscribe` when the subscription
has been defined.
PR Close#38344
This commit refactors Router package to move config utils to a separate file for better
organization and to resolve the problem with circular dependency issue.
Resolves#38212.
PR Close#38229
The current method of handling duplicate navigations caused by 'hashchange' and 'popstate' events for the same url change does not correctly handle cancelled navigations. Because `scheduleNavigation` is called in a `setTimeout` in the location change subscription, the duplicate navigations are not flushed at the same time. This means that if the initial navigation hits a guard that schedules a new navigation, the navigation for the duplicate event will not compare to the correct transition (because we inserted another navigation between the duplicates). See https://github.com/angular/angular/issues/16710#issuecomment-646919529Fixes#16710
PR Close#37674
In an effort to make angular documentation easier for users to read,
we are moving the router tutorial currently in router.md to a new file.
To support this change, we have done the following:
* Update files to fix any broken links caused by moving the file
* Updated the new file to follow tutorial guidelines
* Add the new file to the table of contents under, Tutorials.
PR Close#37979
CanLoad guards are processed in asynchronous manner with the following rules:
* If all guards return `true`, operator returns `true`;
* `false` and `UrlTree` values wait for higher priority guards to resolve;
* Highest priority `false` or `UrlTree` value will be returned.
`prioritizedGuardValue` uses `combineLatest` which in order subscribes to each Observable immediately (not waiting when previous one completes that `concatAll` do). So it makes some advantages in order to run them concurrently. Respectively, a time to resolve all guards will be reduced.
PR Close#37523
This PR changes the logic for determining when to skip route processing from
using the URL of the last attempted navigation to the actual resulting URL after
that transition.
Because guards may prevent navigation and reset the browser URL, the raw
URL of the previous transition may not match the actual URL of the
browser at the end of the navigation process. For that reason, we need to use
`urlAfterRedirects` instead.
Other notes:
These checks in scheduleNavigation were added in eb2ceff4ba
The test still passes and, more surprisingly, passes if the checks are removed
completely. There have likely been changes to the navigation handling that
handle the test in a different way. That said, it still appears to be important
to keep the checks there in some capacity because it does affect how many
navigation events occur. This addresses an issue that came up in #16710: https://github.com/angular/angular/issues/16710#issuecomment-634869739
This also partially addresses #13586 in fixing history for imperative
navigations that are cancelled by guards.
PR Close#37716
Value of "undefined" passed as segment in routerLink is stringified to string "undefined".
This change introduces the same behavior for value of "null".
PR Close#32616
When using the routerLinkActive directive inside a component that is using ChangeDetectionStrategy.OnPush and lazy loaded module routes the routerLinkActive directive does not update after clicking a link to a lazy loaded route that has not already been loaded.
Also the OnPush nav component does not set routerLinkActive correctly when the default route loads, the non-OnPush nav component works fine.
regression caused by #15943closes#19934
PR Close#21411
For URLs that use auxiliary route outlets in the second or following path segments,
when removing the auxiliary route segment, parenthesis remain for the primary outlet segment.
This causes the following error when trying to reload an URL: "Cannot match any route".
The commit adds a check for this scenario, serializing the URL as "a/b" instead of "a/(b)".
PR Close#24656
PR Close#37163
In routerLink if a fragment is added than fragment example shows that it is added before the params '/user/bob#education?debug=true' but actually they are added after that '/user/bob?debug=true#education' changed documentation to show correct example
Fixes#18630
PR Close#37590
This PR changes the logic for determining when to skip route processing from
using the URL of the last attempted navigation to the actual resulting URL after
that transition.
Because guards may prevent navigation and reset the browser URL, the raw
URL of the previous transition may not match the actual URL of the
browser at the end of the navigation process. For that reason, we need to use
`urlAfterRedirects` instead.
Other notes:
These checks in scheduleNavigation were added in eb2ceff4ba
The test still passes and, more surprisingly, passes if the checks are removed
completely. There have likely been changes to the navigation handling that
handle the test in a different way. That said, it still appears to be important
to keep the checks there in some capacity because it does affect how many
navigation events occur. This addresses an issue that came up in #16710: https://github.com/angular/angular/issues/16710#issuecomment-634869739
This also partially addresses #13586 in fixing history for imperative
navigations that are cancelled by guards.
PR Close#37408
Partial resubmit of #26243
Fixes incorrect url tree generation for empty path components with children.
Adds a test to demonstrate the failure of createUrlTree for those routes.
Fixes#13011Fixes#35687
PR Close#37446
PR #13380 added support for `null` and `undefined` but the type on the parameter was not updated.
This would result in a compilation error if `fullTemplateTypeCheck` is enabled.
Fixes#36544
PR Close#37018
The current code will not work as the `e` will be an event,
If we try to access e.id and e.url it will throw an exception, the correct way is to use map or filter down to specific events
PR Close#37027
This change aligns behavior for resolvers which return EMPTY. Currently EMPTY resolvers have inconsistent behavior:
- One resolver that returns EMPTY => won't navigate and just ends on ResolveStart router event.
- Two resolvers where both return EMPTY => throws "Error: Uncaught (in promise): EmptyError: no elements in sequence"
- Two resolvers where one returns a value and the other one returns EMPTY => Navigates successfully.
With this change any EMPTY resolver will cancel navigation.
BREAKING CHANGE: Any resolver which return EMPTY will cancel navigation.
If you want to allow the navigation to continue, you will need to update the resolvers to emit
some value, (i.e. defaultIfEmpty(...), of(...), etc).
PR Close#24195
PR Close#24621
A CanLoad guard returning UrlTree cancels current navigation and redirects.
This matches the behavior available to `CanActivate` guards added in #26521.
Note that this does not affect preloading. A `CanLoad` guard blocks any
preloading. That is, any route with a `CanLoad` guard is not preloaded
and the guards are not executed as part of preloading.
fixes#28306
PR Close#36610
fixes#34614
There's an edge case where if I use two (or more) sibling <router-outlet>s in two (or more) child routes where their parent route doesn't have a component then preactivation will trigger all canDeactivate checks with the same component because it will use wrong OutletContext.
PR Close#36302
Mathieu Lemoine
Sonu Kapoor
Andrew Scott
Popov Max
Yuhei Yasuda
Andrew Scott
Alan Agius
Misko Hevery
Anas Barghoud
Alexander Vologin
Zach Pomerantz
Dmitrij Kuba
Joey Perrott
Judy Bogart
Andrew Kushnir
David Shevitz 🔵
Ruben Schuckit
Krzysztof Grzybek
Manduro
ggradnig
Ajit Singh
m-ahmadi
Santosh Yadav
Paul Gschwendtner
Martin Sikora
Matias Niemelä