Hands-On Microservices with Rust

Register user

To register a new user with an email address, add the following method:

pub fn register_user(&self, email: &str) -> Result<User, Error> {    insert_into(users::table)        .values((                users::email.eq(email),                ))        .returning((                users::id,                users::email                ))        .get_result(&self.conn)        .map_err(Error::from)}

The register_user function expects a string with the email of a user, adds a record to a database, and returns a User instance, which represents a record in the users table.

We use the insert_into method with a table type from the users scope, which is automatically created by the table! macro in the schema module. This method returns an IncompleteInsertStatement instance that provides a values method to set values with an INSERT statement. We ...