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Behavior

sz_orm_model::behaviors

Trait Behavior 

Source 
pub trait Behavior: Send + Sync {
    // Required method
    fn name(&self) -> &'static str;

    // Provided methods
    fn before_insert(
        &self,
        _ctx: &HookContext,
        _attrs: &mut HashMap<String, Value>,
    ) -> BehaviorResult<()> { ... }
    fn before_update(
        &self,
        _ctx: &HookContext,
        _attrs: &mut HashMap<String, Value>,
    ) -> BehaviorResult<()> { ... }
    fn before_delete(
        &self,
        _ctx: &HookContext,
        _attrs: &mut HashMap<String, Value>,
    ) -> BehaviorResult<()> { ... }
    fn after_find(
        &self,
        _ctx: &HookContext,
        _attrs: &mut HashMap<String, Value>,
    ) -> BehaviorResult<()> { ... }
}
Expand description

行为 trait — 可插拔代码复用单元

每个 Behavior 订阅一组生命周期事件，在事件触发时自动执行逻辑。 默认所有方法都是空实现，Behavior 只需重写关心的方法。

Required Methods§

Source

fn name(&self) -> &'static str

Behavior 名称（用于识别、去重、调试）

Provided Methods§

Source

fn before_insert( &self, _ctx: &HookContext, _attrs: &mut HashMap<String, Value>, ) -> BehaviorResult<()>

在 insert 前触发（默认空实现）

Source

fn before_update( &self, _ctx: &HookContext, _attrs: &mut HashMap<String, Value>, ) -> BehaviorResult<()>

在 update 前触发（默认空实现）

Source

fn before_delete( &self, _ctx: &HookContext, _attrs: &mut HashMap<String, Value>, ) -> BehaviorResult<()>

在 delete 前触发（默认空实现）

Source

fn after_find( &self, _ctx: &HookContext, _attrs: &mut HashMap<String, Value>, ) -> BehaviorResult<()>

在 find 后触发（默认空实现，可用于字段后处理）

Dyn Compatibility§

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§