Struct MultiColumnForeignKey 

pub struct MultiColumnForeignKey {
    pub columns: Vec<String>,
    pub ref_table: String,
    pub ref_columns: Vec<String>,
    pub on_delete: FkAction,
    pub on_update: FkAction,
    pub deferrable: Deferrable,
    pub name: Option<String>,
}

Table-level multi-column foreign key

Fields

columns: Vec<String>

Source columns.

ref_table: String

Referenced table.

ref_columns: Vec<String>

Referenced columns.

on_delete: FkAction

ON DELETE action.

on_update: FkAction

ON UPDATE action.

deferrable: Deferrable

Deferral mode.

name: Option<String>

Optional constraint name.

Implementations

impl MultiColumnForeignKey

pub fn new( columns: Vec<String>, ref_table: impl Into<String>, ref_columns: Vec<String>, ) -> Self

Create a new multi-column foreign key.

pub fn on_delete(self, action: FkAction) -> Self

Set the ON DELETE action.

pub fn on_update(self, action: FkAction) -> Self

Set the ON UPDATE action.

pub fn named(self, name: impl Into<String>) -> Self

Set an explicit constraint name.

pub fn deferrable(self) -> Self

Make the foreign key DEFERRABLE.

pub fn initially_deferred(self) -> Self

Make the foreign key DEFERRABLE INITIALLY DEFERRED.

pub fn initially_immediate(self) -> Self

Make the foreign key DEFERRABLE INITIALLY IMMEDIATE.

Trait Implementations

impl Clone for MultiColumnForeignKey

fn clone(&self) -> MultiColumnForeignKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MultiColumnForeignKey

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

Formats the value using the given formatter.

impl PartialEq for MultiColumnForeignKey

fn eq(&self, other: &MultiColumnForeignKey) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for MultiColumnForeignKey