Trait butane_core::migrations::MigrationMut

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pub trait MigrationMut: Migration {
    // Required methods
    fn write_table(&mut self, table: &ATable) -> Result<()>;
    fn delete_table(&mut self, name: &str) -> Result<()>;
    fn add_sql(
        &mut self,
        backend_name: &str,
        up_sql: &str,
        down_sql: &str
    ) -> Result<()>;
    fn add_type(&mut self, key: TypeKey, sqltype: DeferredSqlType) -> Result<()>;
    fn set_migration_from(&mut self, prev: Option<String>) -> Result<()>;
}

Expand description

A migration which can be modified

Required Methods§

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fn write_table(&mut self, table: &ATable) -> Result<()>

Adds an abstract table to the migration. The table state should represent the expected state after the migration has been applied. It is expected that all tables will be added to the migration in this fashion.

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fn delete_table(&mut self, name: &str) -> Result<()>

Delete the table with the given name. Note that simply deleting a table in code does not work – it will remain with its last known schema unless explicitly deleted. See also the butane cli command butane delete table <TABLE>.

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