Enum FkAction 

pub enum FkAction {
    Restrict,
    Cascade,
    SetNull,
}

ON DELETE action for a ForeignKey.

Variants

Restrict

Reject the parent delete if any child row references it (default).

Cascade

Cascade the delete to child rows.

SetNull

Set the referencing columns to NULL in child rows.

Trait Implementations

impl Clone for FkAction

fn clone(&self) -> FkAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for FkAction

impl Debug for FkAction

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

Formats the value using the given formatter.

impl Default for FkAction

fn default() -> FkAction

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for FkAction

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for FkAction

impl PartialEq for FkAction

fn eq(&self, other: &FkAction) -> 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 Serialize for FkAction

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for FkAction