Actix-web JSON request body

1

See this comment about an error with deserializing a JSON request body.
What do I need to do to turn dog into an instance of the Dog struct?
https://github.com/mvolkmann/rust-actix-web-demo/blob/master/src/main.rs#L51

2

You have a Json<Dog> and you want a Dog, so you should go look up the documentation for the Json<T> type: actix_web::web::Json - Rust

The first method in the docs looks useful:

impl<T> Json<T> {
    /// Deconstruct to an inner value
    pub fn into_inner(self) -> T;
}
1 Like
3

Thanks! I really do hope that soon I reach the point that I am able to find the answers to my questions on my own. Admittedly after about six weeks with Rust I am still struggling to do that. I find it interesting that actix_web::web::Json only has one method, but they chose not to show an example of using it in the example code at the top of this page. I assume the example they do show indicates that you do not need to use the into_inner method to get the values of individual properties.

4

The Json type implements Deref and DerefMut which allows you to immutably and mutably borrow the thing inside the Json directly on the Json, but you need into_inner to get ownership of the inner value.

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5

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