Enum Op 

#[non_exhaustive]
pub enum Op {
    Create,
    Update,
}

Which stage of a save a listener is seeing.

Deletion is deliberately not a variant here. It has its own pair of listener methods (ModelListener::before_delete and after_delete), because a listener written for saves must not silently start receiving deletes: crate::listeners::Timestamps, for one, stamps updated_at on every save, which is nonsense for a row being removed. Separate methods mean a listener opts into deletion rather than inheriting it.

Non-exhaustive so a further save stage stays additive.

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.

Create

Update

Trait Implementations

impl Clone for Op

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Op

impl Debug for Op

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

Formats the value using the given formatter.

impl Eq for Op

impl PartialEq for Op

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Op