Struct ForeignKeyCreateStatement 

pub struct ForeignKeyCreateStatement { /* private fields */ }

Builder for a CREATE FOREIGN KEY constraint.

This builder collects foreign key metadata (source table/columns, referenced table/columns, and referential actions) for use in CREATE TABLE statements.

Implementations

impl ForeignKeyCreateStatement

pub fn new() -> Self

Create a new empty foreign key builder.

pub fn name<T>(&mut self, name: T) -> &mut Self

where T: IntoIden,

Set the constraint name.

pub fn from_tbl<T>(&mut self, tbl: T) -> &mut Self

where T: IntoTableRef,

Set the source (referencing) table.

pub fn from_col<C>(&mut self, col: C) -> &mut Self

where C: IntoIden,

Add a source (referencing) column.

pub fn to_tbl<T>(&mut self, tbl: T) -> &mut Self

where T: IntoTableRef,

Set the target (referenced) table.

pub fn to_col<C>(&mut self, col: C) -> &mut Self

where C: IntoIden,

Add a target (referenced) column.

pub fn on_delete(&mut self, action: ForeignKeyAction) -> &mut Self

Set the ON DELETE action.

pub fn on_update(&mut self, action: ForeignKeyAction) -> &mut Self

Set the ON UPDATE action.

Trait Implementations

impl Clone for ForeignKeyCreateStatement

fn clone(&self) -> ForeignKeyCreateStatement

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ForeignKeyCreateStatement

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ForeignKeyCreateStatement

fn default() -> ForeignKeyCreateStatement

Returns the “default value” for a type.