Trait Migration 

pub trait Migration<DB: Backend> {
    // Required methods
    fn run(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>;
    fn revert(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>;
    fn metadata(&self) -> &dyn MigrationMetadata;
    fn name(&self) -> &dyn MigrationName;
}

Represents a migration that interacts with diesel

Required Methods

fn run(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

Apply this migration

fn revert(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

Revert this migration

fn metadata(&self) -> &dyn MigrationMetadata

Get a the attached metadata for this migration

fn name(&self) -> &dyn MigrationName

Get the name of the current migration

The provided name is used by migration harness to get the version of a migration and to as something to that is displayed and allows user to identify a specific migration

Trait Implementations

impl<DB: Backend> Migration<DB> for &dyn Migration<DB>

fn run(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

Apply this migration

fn revert(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

Revert this migration

fn metadata(&self) -> &dyn MigrationMetadata

Get a the attached metadata for this migration

fn name(&self) -> &dyn MigrationName

Get the name of the current migration

impl<DB: Backend> Migration<DB> for Box<dyn Migration<DB> + '_>

fn run(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

Apply this migration

fn revert(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

Revert this migration

fn metadata(&self) -> &dyn MigrationMetadata

Get a the attached metadata for this migration

fn name(&self) -> &dyn MigrationName

Get the name of the current migration

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<DB: Backend> Migration<DB> for Arc<dyn Migration<DB> + '_>

fn run(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

fn revert(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

fn metadata(&self) -> &dyn MigrationMetadata

fn name(&self) -> &dyn MigrationName

impl<DB: Backend> Migration<DB> for Box<dyn Migration<DB> + '_>

fn run(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

fn revert(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

fn metadata(&self) -> &dyn MigrationMetadata

fn name(&self) -> &dyn MigrationName

impl<DB: Backend> Migration<DB> for Rc<dyn Migration<DB> + '_>

fn run(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

fn revert(&self, conn: &mut dyn BoxableConnection<DB>) -> Result<()>

fn metadata(&self) -> &dyn MigrationMetadata

fn name(&self) -> &dyn MigrationName

Implementors

impl<DB: Backend> Migration<DB> for &dyn Migration<DB>