Empty path routes are effectively 'passthrough' routes that do not
appear in the URL. When these exist in the route tree, we do not want to
apply named outlet commands to that tree location. Instead, we skip past
this location in the tree, effectively squashing/removing this
passthrough route from the tree.
fixes#50356
PR Close#51292
`RouterTestingModule` is not needed as of v16. Instead, TestBed
automatically provides `MockPlatformLocation` in order to help test
navigations in the application. The location mocks in the
RouterTestingModule aren't necessary anymore.
There doesn't appear to be any real documentation around
`RouterTestingModule` other than the API docs.
PR Close#49427
The previous fix for squashing empty children didn't quite work when the
existing route had segments. The result would be that the segments from
the existing route were dropped from the final URL.
PR Close#49691
When navigating in the Router, the current approach does the redirects
and the creation of the `RouterStateSnapshot` in two separate steps
(applyRedirects and recognize). These two steps duplicate the route
matching logic, resulting in user code on routes being executing twice
(custom `UrlMatcher` and `canMatch` guards). This also duplicates the
complex matching logic in two places, which increases the bundle size
and maintenance burden.
This commit combines the `applyRedirects` and `recognize` steps into a
single matching algorithm.
fixes#26081
PR Close#49163
When navigating in the Router, the current approach does the redirects
and the creation of the `RouterStateSnapshot` in two separate steps
(applyRedirects and recognize). These two steps duplicate the route
matching logic, resulting in user code on routes being executing twice
(custom `UrlMatcher` and `canMatch` guards). This also duplicates the
complex matching logic in two places, which increases the bundle size
and maintenance burden.
This commit combines the `applyRedirects` and `recognize` steps into a
single matching algorithm.
fixes#26081
PR Close#49163
The details of this commit are pretty thoroughly described in the tests
and code comments. In short, it is sometimes ambiguous where to apply commands in
a `SegmentGroup` tree that is created from an `ActivatedRoute` when
dealing with empty paths. This adjusts the strategy to tolerate more
ambiguity while still allowing developers to be explicit.
This is a fix-forward for b/265215141
PR Close#48734
This exposes a new function from the router public API that allows
developers to create a `UrlTree` from _any_ `ActivatedRouteSnapshot`.
The current Router APIs only support creating a `UrlTree` from an
`ActivatedRoute` which is both active _and_ materially appears in the
`UrlTree` (it cannot be an empty path named outlet). This is because the
implementation of the current way of creating a `UrlTree` attempts to
look up the `UrlSegment` of the `ActivatedRoute` in the currently active
`UrlTree` of the router. When this doesn't work, the `UrlTree` creation
fails.
Note that this API does not replace the current one. That would actually be a
breaking change but should be done at some point in the future (v15). That is,
`router.navigate` should call this new function. At that point, we can
remove `_lastPathIndex`, `_urlSegment`, and `_correctedPathIndex` from
the `ActivatedRoute`, along with all of the logic associated with
determining what those should be. In addition, this would unblock a fix
for #26081 because the `applyRedirects` and `recognize` operations
could be combined into one. Overall, this would simplify logic in the router
and reduce code size. It also exposes core routing capabilities as a helper function
which were previously private API, which is a necessary step towards #42953.
As a stress test for this new function, it _was_ swapped in as the
default for `UrlTree` creation in #45859 and tested internally. The
results indicate that this function behaves correctly.
resolves#42191 (Tested directly)
resolves#38276 (The test with a guard covers this case)
resolves#22763 (Tested directly)
PR Close#45877
corrects a bug that resulted in query params such as
`[queryParams]={a: 1, b:[]}` being serialized as 'a=1&'
instead of 'a=1'
resolves#42445
PR Close#42481
ActivatedRoute.fragment was typed as Observable<string> but could emit
both null and undefined due to incorrect non-null assertion. These
non-null assertions have been removed and fragment has been retyped to
string | null.
BREAKING CHANGE:
Strict null checks will report on fragment potentially being null.
Migration path: add null check.
Fixes#23894, fixes#34197.
PR Close#37336
Fix a case where matrix parameters weren't stringified when they are passed as a first command
when creating a url tree. Fix return type in parseMatrixParams method
because it always returns {[key: string]: string}
Closes#23165
PR Close#25095
There are many places where examples use just a string for the command
in outlets. When using nested outlets, we do not correctly handle
this case, as the types and algorithm always expect an array.
This PR updates the `createUrlTree` algorithm to account for the
possibility of a string literal as the command for an outlet.
Fixes#18928
PR Close#39728
When there is a primary outlet present in the outlets map and the object is also prefixed
with some other commands, the current logic only uses the primary outlet and ignores
the others. This change ensures that all outlets are respected at the
segment level when prefixed with other commands.
PR Close#39456
This commit has a small refactor of some methods in create_url_tree.ts
and adds some test cases, including two that will fail at the moment but
should pass. A follow-up commit will make use of the refactorings to fix
the test with minimal changes.
PR Close#39456
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
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
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
The Router use the type `Params` for all of:
- position parameters,
- matrix parameters,
- query parameters.
`Params` is defined as follow `type Params = {[key: string]: any}`
Because parameters can either have single or multiple values, the type should
actually be `type Params = {[key: string]: string | string[]}`.
The client code often assumes that parameters have single values, as in the
following exemple:
```
class MyComponent {
sessionId: Observable<string>;
constructor(private route: ActivatedRoute) {}
ngOnInit() {
this.sessionId = this.route
.queryParams
.map(params => params['session_id'] || 'None');
}
}
```
The problem here is that `params['session_id']` could be `string` or `string[]`
but the error is not caught at build time because of the `any` type.
Fixing the type as describe above would break the build because `sessionId`
would becomes an `Observable<string | string[]>`.
However the client code knows if it expects a single or multiple values. By
using the new `ParamMap` interface the user code can decide when it needs a
single value (calling `ParamMap.get(): string`) or multiple values (calling
`ParamMap.getAll(): string[]`).
The above exemple should be rewritten as:
```
class MyComponent {
sessionId: Observable<string>;
constructor(private route: ActivatedRoute) {}
ngOnInit() {
this.sessionId = this.route
.queryParamMap
.map(paramMap => paramMap.get('session_id') || 'None');
}
}
```
Added APIs:
- `interface ParamMap`,
- `ActivatedRoute.paramMap: ParamMap`,
- `ActivatedRoute.queryParamMap: ParamMap`,
- `ActivatedRouteSnapshot.paramMap: ParamMap`,
- `ActivatedRouteSnapshot.queryParamMap: ParamMap`,
- `UrlSegment.parameterMap: ParamMap`
