Answers

1. A GET request can be cached, and there are limits to the types and amount of data that can be sent. A POST request has a body, which enables more data to be transferred. Also, it cannot be cached.
2. We use middleware to open the header and check the credentials before sending the request to the desired view. This gives us an opportunity to prevent the body being loaded by returning an auth error before loading the view, preventing the potentially malicious body.
3. For the struct to be directly returned, we will have to implement the Responder trait. During this implementation, we will have to define the responded_to function that accepts the HTTP request struct. The responded_to will be fired when the struct is returned.
4. To enact middleware we can implement the FromRequest trait for a struct, and then pass that struct as a parameter in the function of the API endpoint
5. We decorate the struct with the #[derive(Deserialize)] macro. Once we have done this, we define the parameter type...