Trait postgres_mapper::FromPostgresRow

pub trait FromPostgresRow: Sized {
    fn from_postgres_row(row: PostgresRow) -> Result<Self, Error>;
    fn from_postgres_row_ref(row: &PostgresRow) -> Result<Self, Error>;
}

Trait containing various methods for converting from a postgres Row to a mapped type.

When using the postgres_mapper_derive crate's PostgresMapper proc-macro, this will automatically be implemented on types.

The [from_postgres_row] method exists for consuming a Row - useful for iterator mapping - while [from_postgres_row_ref] exists for borrowing a Row.

Required Methods

fn from_postgres_row(row: PostgresRow) -> Result<Self, Error>

Converts from a postgres Row into a mapped type, consuming the given Row.

Errors

Returns Error::ColumnNotFound if the column in a mapping was not found.

Returns Error::Postgres if there was an error converting the row column to the requested type.

fn from_postgres_row_ref(row: &PostgresRow) -> Result<Self, Error>

Converts from a postgres Row into a mapped type, borrowing the given Row.

Errors

Returns Error::ColumnNotFound if the column in a mapping was not found.

Returns Error::Postgres if there was an error converting the row column to the requested type.

Implementors