Struct Version 

pub struct Version { /* private fields */ }

The version represents the state of a schema at a point in time.

Implementations

impl Version

pub fn table(&mut self, schema_id: &str, id: &str) -> Table

Define a table in this version

pub fn pre_migration(&mut self, q: impl QueryBody + 'static)

Add a query to execute before before migrating to this schema (applied immediately before migration). Note that these may not run on new databases or if you later delete early migrations, so these should only modify existing data and not create new data (singleton rows, etc). If you need those, do it with a normal query executed manually against the latest version.

pub fn post_migration(&mut self, q: impl QueryBody + 'static)

Add a query to execute after migrating to this schema version (applied immediately after migration). See other warnings from pre_migration.

Trait Implementations

impl Default for Version

fn default() -> Version

Returns the “default value” for a type.