foo.rs

// If I have this everything works

use schema::users::dsl::*;
use schema::users;

fn authenticate_user(db: &Db, user_email: &str, password: &str) -> EndpointResult<User> {
    let conn = &*db.pool().get()?;

    let user = match users.filter(users::email.eq(user_email)).first::<User>(conn) {
        Ok(user) => user,
        Err(DieselError::NotFound) => return Err(EndpointError::from(AuthError::Unauthorized)),
        Err(err) => return Err(EndpointError::from(err))
    };

    match verify(password, user.hashed_password.as_ref().expect("hashed password should be there")) {
        Ok(true) => Ok(user),
        Ok(false) => Err(EndpointError::from(AuthError::Unauthorized)),
        Err(err) => Err(EndpointError::from(AuthError::Encryption(err)))
    }
}
/////////////////////////////////////////////////////
// But if i do this always returns me the first user
fn authenticate_user(db: &Db, email: &str, password: &str) -> EndpointResult<User> {
    use schema::users::dsl::*;
    use schema::users;
    
    let conn = &*db.pool().get()?;

    let user = match users.filter(users::email.eq(email)).first::<User>(conn) {
        Ok(user) => user,
        Err(DieselError::NotFound) => return Err(EndpointError::from(AuthError::Unauthorized)),
        Err(err) => return Err(EndpointError::from(err))
    };

    match verify(password, user.hashed_password.as_ref().expect("hashed password should be there")) {
        Ok(true) => Ok(user),
        Ok(false) => Err(EndpointError::from(AuthError::Unauthorized)),
        Err(err) => Err(EndpointError::from(AuthError::Encryption(err)))
    }
}