Resolving URIs to handlers
- 主要言語
- Rust
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説明
e### Motivation
Make it easier to support more complex and interconnected REST APIs by matching paths to the resource tree from inside a handler.
### Proposal
Effectively we need a method like:
```rust
impl HttpRequest {
fn match_path(&self, path: &str) -> Option>;
}
```
that matches `path` against the resource map tree and returns a Path with filled in dynamic segments.
### Discussed in https://github.com/actix/actix-web/discussions/2559
Originally posted by **sazzer** December 31, 2021
Hi there,
The existence of `HttpRequest::url_for` is fantastic for building real REST APIs. I can use this to generate URIs for other resources so that I can correctly generate the hypermedia graph.
However, what I can't quite work out how to do is the opposite. To take a URL that was was provided to me and convert it back into the details of what it resolves to.
If I understand it right, I can use `HttpRequest::resource_map().match_name()` to get the *name* of the handler that matches a given URL, but this doesn't give me the binds.
For example, if I had:
```rust
config.service(
web::resource("/users/{id}")
.name("users_user_by_id")
.route(web::get().to(get::handler)),
);
```
Then I could use `req.resource_map().match_name("http://localhost:8000/users/abc")` to get `Some("users_user_by_id")`, but that would *not* tell me that the `{id}` bind was assigned the value `"abc"`.
Is there any way to get this full expansion?
Cheers
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