Comments (3)
This is something the derive macro doesn't handle yet. The correct use, I believe, would be:
#[derive(ramhorns::Content)]
struct SamplePage {
username: String,
age: u64,
}
#[derive(ramhorns::Content)]
struct PageWithMetadata<T> { // no trait bounds here
#[ramhorns(flatten)]
page: T,
metadata: (),
}
The derive macro would then have to conditionally impl Content for PageWithMetadata<T> where T: Content
. This is not particularly hard to do, it just needs to keep track of generic types and make sure the bounds are applied to them in the produced code.
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That makes sense. I can try and put together a pull request for that, if that would be helpful?
from ramhorns.
That makes sense. I can try and put together a pull request for that, if that would be helpful?
I'm more than happy to accept a PR for this :). The generics are currently only copied dumbly into the output stream currently. This works with lifetimes, but obviously breaks here, so that's the part needs to be more robust. Field rendering should work fine without changes I believe.
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Related Issues (20)
- Compatibility with serde HOT 1
- Feature: impl std::error::Error for ramhorns::Error HOT 1
- Partials and Handlebars semantics
- 1.0 Roadmap HOT 3
- Lambdas sections? HOT 6
- (macro-hygiene) ramhorn derive codegen clashes with syn::Result HOT 2
- derive Content on enums
- Is it possible to name elements of a Vec<String>? HOT 2
- Add support for dot notation HOT 4
- How to use ramhorns with serde_json::Value? HOT 7
- Support for custom file extensions
- Quick Question: Setting Pulldown-Cmark Options
- beef 0.5 HOT 1
- Recursive partials cause stack overflow HOT 1
- Confusing result when missing partial files HOT 3
- Comparison with Tera and Askama HOT 1
- benchmark with fxhash HOT 2
- BTreeMap vs HashMap HOT 1
- LGPL license? HOT 5
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