Trait Model

Source

pub trait Model:
    Send
    + Sync
    + Sized
    + 'static {
    type PrimaryKey: Send + Sync + Debug + Display + Clone + Default;

    // Required methods
    fn table_name() -> &'static str;
    fn pk(&self) -> Self::PrimaryKey;
    fn set_pk(&mut self, pk: Self::PrimaryKey);

    // Provided methods
    fn pk_name() -> &'static str { ... }
    fn foreign_key(relation: &str) -> String { ... }
    fn timestamp_fields() -> Option<TimestampFields> { ... }
    fn soft_delete_field() -> Option<&'static str> { ... }
    fn fields() -> Vec<(&'static str, &'static str)> { ... }
}

Expand description

所有 ORM 模型必须实现的核心 trait

L-5 修复：补充示例文档

§示例

use sz_orm_core::model::Model;

#[derive(Debug, Clone, Default)]
struct User {
    id: i64,
    name: String,
}

impl Model for User {
    type PrimaryKey = i64;
    fn table_name() -> &'static str { "users" }
    fn pk(&self) -> Self::PrimaryKey { self.id }
    fn set_pk(&mut self, pk: Self::PrimaryKey) { self.id = pk; }
}

assert_eq!(User::table_name(), "users");
assert_eq!(User::pk_name(), "id");
assert_eq!(User::foreign_key("orders"), "orders_id");