Trait gotham::state::FromState

pub trait FromState<T> {
    fn take_from(_: &mut State) -> T;
    fn borrow_from(_: &State) -> &T;
    fn borrow_mut_from(_: &mut State) -> &mut T;
}

A trait for accessing data that is known to be stored in State.

This is especially applicable to data which was been extracted by the Router such as Request path and query strings.

Panics

All functions panic if the value is a None when retrieved from State.

Required Methods

fn take_from(_: &mut State) -> T

Moves out of State and returns ownership

Panics

When Self was not stored in State

fn borrow_from(_: &State) -> &T

Borrows from State storage

Panics

When Self was not stored in State

fn borrow_mut_from(_: &mut State) -> &mut T

Mutably borrows from State storage

Panics

When Self was not stored in State

Implementors

• impl<T> FromState<SessionData<T>> for SessionData<T> where
    T: Default + Serialize + for<'de> Deserialize<'de> + Send + 'static, 
• impl FromState<Headers> for Headers
• impl FromState<Uri> for Uri
• impl FromState<HttpVersion> for HttpVersion
• impl FromState<Method> for Method