sea-orm/examples/sqlx-mysql/src/example_cake.rs
2021-06-12 19:18:14 +08:00

89 lines
1.8 KiB
Rust

use sea_orm::entity::prelude::*;
#[derive(Copy, Clone, Default, Debug, DeriveEntity)]
pub struct Entity;
impl EntityName for Entity {
fn table_name(&self) -> &str {
"cake"
}
}
#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel)]
pub struct Model {
pub id: i32,
pub name: String,
}
#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
pub enum Column {
Id,
Name,
}
#[derive(Copy, Clone, Debug, EnumIter, DerivePrimaryKey)]
pub enum PrimaryKey {
Id,
}
impl PrimaryKeyTrait for PrimaryKey {
fn auto_increment() -> bool {
true
}
}
#[derive(Copy, Clone, Debug, EnumIter)]
pub enum Relation {
Fruit,
}
impl ColumnTrait for Column {
type EntityName = Entity;
fn def(&self) -> ColumnType {
match self {
Self::Id => ColumnType::Integer(None),
Self::Name => ColumnType::String(None),
}
}
}
impl RelationTrait for Relation {
fn def(&self) -> RelationDef {
match self {
Self::Fruit => Entity::has_many(super::fruit::Entity)
.from(Column::Id)
.to(super::fruit::Column::CakeId)
.into(),
}
}
}
impl Related<super::fruit::Entity> for Entity {
fn to() -> RelationDef {
Relation::Fruit.def()
}
}
impl Related<super::filling::Entity> for Entity {
fn to() -> RelationDef {
super::cake_filling::Relation::Filling.def()
}
fn via() -> Option<RelationDef> {
Some(super::cake_filling::Relation::Cake.def().rev())
}
}
impl Model {
pub fn find_fruit(&self) -> Select<super::fruit::Entity> {
Entity::find_related().belongs_to::<Entity>(self)
}
pub fn find_filling(&self) -> Select<super::filling::Entity> {
Entity::find_related().belongs_to::<Entity>(self)
}
}
impl ActiveModelBehavior for ActiveModel {}