Enum ForeignKeyAction 

pub enum ForeignKeyAction {
    NoAction,
    Restrict,
    Cascade,
    SetNull,
    SetDefault,
}

Foreign key referential action.

Variants

NoAction

No action.

Restrict

Restrict deletion/update.

Cascade

Cascade the operation.

SetNull

Set to NULL.

SetDefault

Set to default value.

Implementations

impl ForeignKeyAction

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

Returns the SQL representation of the 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 Copy for ForeignKeyAction

impl Debug for ForeignKeyAction

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

Formats the value using the given formatter.

impl Eq for ForeignKeyAction

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 StructuralPartialEq for ForeignKeyAction