Struct HookChain 

pub struct HookChain { /* private fields */ }

Hook 链 —— 多个 Hook 顺序执行

将多个 Hook 聚合成一个，按注册顺序依次调用。 若任一 Hook 返回 Err，后续 Hook 不再执行。

Implementations

impl HookChain

pub fn new() -> Self

创建空的 Hook 链

pub fn add<H: Hook + 'static>(&mut self, hook: H) -> &mut Self

添加 Hook（链式调用），返回 &mut Self 以支持连续添加

Trait Implementations

impl Default for HookChain

fn default() -> Self

Returns the “default value” for a type.

impl Hook for HookChain

fn before_insert<'life0, 'life1, 'async_trait>( &'life0 self, row: &'life1 mut Row, ) -> Pin<Box<dyn Future<Output = DbResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

INSERT 之前（可修改即将插入的 Row）

fn after_insert<'life0, 'life1, 'async_trait>( &'life0 self, row: &'life1 Row, ) -> Pin<Box<dyn Future<Output = DbResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

INSERT 之后（可读取已插入的 Row，不可修改）

fn before_update<'life0, 'life1, 'async_trait>( &'life0 self, row: &'life1 mut Row, ) -> Pin<Box<dyn Future<Output = DbResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

UPDATE 之前（可修改即将更新的 Row）

fn after_update<'life0, 'life1, 'async_trait>( &'life0 self, row: &'life1 Row, ) -> Pin<Box<dyn Future<Output = DbResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait,

UPDATE 之后

fn before_delete<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, table: &'life1 str, id: &'life2 str, ) -> Pin<Box<dyn Future<Output = DbResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

DELETE 之前（可校验或拒绝删除）

fn after_delete<'life0, 'life1, 'life2, 'async_trait>( &'life0 self, table: &'life1 str, id: &'life2 str, ) -> Pin<Box<dyn Future<Output = DbResult<()>> + Send + 'async_trait>>

where Self: 'async_trait, 'life0: 'async_trait, 'life1: 'async_trait, 'life2: 'async_trait,

DELETE 之后