Struct DefineEvent 

pub struct DefineEvent { /* private fields */ }

DEFINE EVENT <name> ON TABLE <table> WHEN <cond> THEN <block> — a trigger that fires on CREATE/UPDATE/DELETE. $event, $before, $after, $value are available inside when/then.

DefineEvent::new("on_publish", "post")
    .when("$event = 'UPDATE' AND $after.published = true")
    .then("{ CREATE notification SET post = $after.id }")
    .to_surrealql();

Implementations

impl DefineEvent

pub fn new(name: impl Into<String>, table: impl Into<String>) -> Self

pub fn when(self, cond: impl Into<String>) -> Self

The WHEN <condition> guard (raw SurrealQL).

pub fn then(self, block: impl Into<String>) -> Self

The THEN <block> body (raw SurrealQL, typically a { … } block).

pub fn overwrite(self) -> Self

Drop the IF NOT EXISTS guard.

pub fn to_surrealql(&self) -> String

pub fn remove(name: &str, table: &str) -> String

REMOVE EVENT IF EXISTS <name> ON TABLE <table>.

Trait Implementations

impl Display for DefineEvent

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

Formats the value using the given formatter.