Enum ForeignKeyAction 

#[non_exhaustive]
pub enum ForeignKeyAction {
    Restrict,
    Cascade,
    SetNull,
    SetDefault,
    NoAction,
}

Foreign key action

This enum represents actions for foreign key constraints.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Restrict

RESTRICT - Reject the delete/update

Cascade

CASCADE - Delete/update the referencing rows

SetNull

SET NULL - Set the foreign key column(s) to NULL

SetDefault

SET DEFAULT - Set the foreign key column(s) to their default values

NoAction

NO ACTION - Similar to RESTRICT (default)

Implementations

impl ForeignKeyAction

pub fn as_str(&self) -> &'static str

Get the SQL keyword for this action

Trait Implementations

impl Clone for ForeignKeyAction

fn clone(&self) -> ForeignKeyAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ForeignKeyAction

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

Formats the value using the given formatter.

impl PartialEq for ForeignKeyAction

fn eq(&self, other: &ForeignKeyAction) -> 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 Copy for ForeignKeyAction

impl Eq for ForeignKeyAction

impl StructuralPartialEq for ForeignKeyAction