Design and implement the Bakery Chain schema

tests/bakery_chain/baker.rs

@@ -0,0 +1,81 @@
+use sea_orm::entity::prelude::*;
+
+#[derive(Copy, Clone, Default, Debug, DeriveEntity)]
+pub struct Entity;
+
+impl EntityName for Entity {
+    fn table_name(&self) -> &str {
+        "baker"
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel)]
+pub struct Model {
+    pub id: i32,
+    pub name: String,
+    pub bakery_id: Option<i32>,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
+pub enum Column {
+    Id,
+    Name,
+    BakeryId,
+}
+
+#[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 {
+    Bakery,
+}
+
+impl ColumnTrait for Column {
+    type EntityName = Entity;
+
+    fn def(&self) -> ColumnDef {
+        match self {
+            Self::Id => ColumnType::Integer.def(),
+            Self::Name => ColumnType::String(None).def(),
+            Self::BakeryId => ColumnType::Integer.def(),
+        }
+    }
+}
+
+impl RelationTrait for Relation {
+    fn def(&self) -> RelationDef {
+        match self {
+            Self::Bakery => Entity::belongs_to(super::bakery::Entity)
+                .from(Column::BakeryId)
+                .to(super::bakery::Column::Id)
+                .into(),
+        }
+    }
+}
+
+impl Related<super::bakery::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Bakery.def()
+    }
+}
+
+impl Related<super::cake::Entity> for Entity {
+    fn to() -> RelationDef {
+        super::cakes_bakers::Relation::Cake.def()
+    }
+
+    fn via() -> Option<RelationDef> {
+        Some(super::cakes_bakers::Relation::Baker.def().rev())
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

tests/bakery_chain/bakery.rs

@@ -0,0 +1,84 @@
+use sea_orm::entity::prelude::*;
+
+#[derive(Copy, Clone, Default, Debug, DeriveEntity)]
+pub struct Entity;
+
+impl EntityName for Entity {
+    fn table_name(&self) -> &str {
+        "bakery"
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel)]
+pub struct Model {
+    pub id: i32,
+    pub name: String,
+    pub profit_margin: f64,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
+pub enum Column {
+    Id,
+    Name,
+    ProfitMargin,
+}
+
+#[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 {
+    Baker,
+    Order,
+    Cake,
+}
+
+impl ColumnTrait for Column {
+    type EntityName = Entity;
+
+    fn def(&self) -> ColumnDef {
+        match self {
+            Self::Id => ColumnType::Integer.def(),
+            Self::Name => ColumnType::String(None).def(),
+            Self::ProfitMargin => ColumnType::Float.def(),
+        }
+    }
+}
+
+impl RelationTrait for Relation {
+    fn def(&self) -> RelationDef {
+        match self {
+            Self::Baker => Entity::has_many(super::baker::Entity).into(),
+            Self::Order => Entity::has_many(super::order::Entity).into(),
+            Self::Cake => Entity::has_many(super::cake::Entity).into(),
+        }
+    }
+}
+
+impl Related<super::baker::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Baker.def()
+    }
+}
+
+impl Related<super::order::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Order.def()
+    }
+}
+
+impl Related<super::cake::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Cake.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

tests/bakery_chain/bakery_chain_erd.drawio

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tests/bakery_chain/cake.rs

@@ -0,0 +1,98 @@
+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,
+    pub price: f32,
+    pub bakery_id: Option<i32>,
+    pub lineitem_id: Option<i32>,
+    pub gluten_free: bool,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
+pub enum Column {
+    Id,
+    Name,
+    Price,
+    BakeryId,
+    LineitemId,
+    GlutenFree,
+}
+
+#[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 {
+    Bakery,
+    Lineitem,
+}
+
+impl ColumnTrait for Column {
+    type EntityName = Entity;
+
+    fn def(&self) -> ColumnDef {
+        match self {
+            Self::Id => ColumnType::Integer.def(),
+            Self::Name => ColumnType::String(None).def(),
+            Self::Price => ColumnType::Money(Some((19, 4))).def(),
+            Self::BakeryId => ColumnType::Integer.def(),
+            Self::LineitemId => ColumnType::Integer.def(),
+            Self::GlutenFree => ColumnType::Boolean.def(),
+        }
+    }
+}
+
+impl RelationTrait for Relation {
+    fn def(&self) -> RelationDef {
+        match self {
+            Self::Bakery => Entity::belongs_to(super::bakery::Entity)
+                .from(Column::BakeryId)
+                .to(super::bakery::Column::Id)
+                .into(),
+            Self::Lineitem => Entity::has_many(super::lineitem::Entity).into(),
+        }
+    }
+}
+
+impl Related<super::bakery::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Bakery.def()
+    }
+}
+
+impl Related<super::baker::Entity> for Entity {
+    fn to() -> RelationDef {
+        super::cakes_bakers::Relation::Baker.def()
+    }
+
+    fn via() -> Option<RelationDef> {
+        Some(super::cakes_bakers::Relation::Cake.def().rev())
+    }
+}
+
+impl Related<super::lineitem::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Lineitem.def()
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}

tests/bakery_chain/cakes_bakers.rs

@@ -0,0 +1,68 @@
+use sea_orm::entity::prelude::*;
+
+#[derive(Copy, Clone, Default, Debug, DeriveEntity)]
+pub struct Entity;
+
+impl EntityName for Entity {
+    fn table_name(&self) -> &str {
+        "cakes_bakers"
+    }
+}
+
+#[derive(Clone, Debug, PartialEq, DeriveModel, DeriveActiveModel)]
+pub struct Model {
+    pub cake_id: i32,
+    pub baker_id: i32,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveColumn)]
+pub enum Column {
+    CakeId,
+    BakerId,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DerivePrimaryKey)]
+pub enum PrimaryKey {
+    CakeId,
+    BakerId,
+}
+
+impl PrimaryKeyTrait for PrimaryKey {
+    fn auto_increment() -> bool {
+        false
+    }
+}
+
+#[derive(Copy, Clone, Debug, EnumIter)]
+pub enum Relation {
+    Cake,
+    Baker,
+}
+
+impl ColumnTrait for Column {
+    type EntityName = Entity;
+
+    fn def(&self) -> ColumnDef {
+        match self {
+            Self::CakeId => ColumnType::Integer.def(),
+            Self::BakerId => ColumnType::Integer.def(),
+        }
+    }
+}
+
+impl RelationTrait for Relation {
+    fn def(&self) -> RelationDef {
+        match self {
+            Self::Cake => Entity::belongs_to(super::cake::Entity)
+                .from(Column::CakeId)
+                .to(super::cake::Column::Id)
+                .into(),
+            Self::Baker => Entity::belongs_to(super::baker::Entity)
+                .from(Column::BakerId)
+                .to(super::baker::Column::Id)
+                .into(),
+        }
+    }
+}
+
+impl ActiveModelBehavior for ActiveModel {}