Trait diesel::prelude::FindDsl

pub trait FindDsl<PK>: AsQuery {
    type Output: AsQuery<SqlType=Self::SqlType>;
    fn find(self, id: PK) -> Self::Output;
}

Attempts to find a single record from the given table by primary key.

Example

let sean = (1, "Sean".to_string());
let tess = (2, "Tess".to_string());
assert_eq!(Ok(sean), users.find(1).first(&connection));
assert_eq!(Ok(tess), users.find(2).first(&connection));
assert_eq!(Err::<(i32, String), _>(NotFound), users.find(3).first(&connection));

Associated Types

type Output: AsQuery<SqlType=Self::SqlType>

Required Methods

fn find(self, id: PK) -> Self::Output

Implementors

• impl<T, PK> FindDsl<PK> for T where T: Table + FilterDsl<T::PrimaryKey::Output>,
        T::PrimaryKey: EqAll<PK>