75cb269ceb
* Custom join on conditions * Try lambda approach * Implement debug for relation * Add example without `rev` * Add more examples * Docs
83 lines
2.1 KiB
Rust
83 lines
2.1 KiB
Rust
use crate::entity::prelude::*;
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use sea_query::{Expr, IntoCondition};
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#[derive(Debug)]
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pub struct CakeToFilling;
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impl Linked for CakeToFilling {
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type FromEntity = super::cake::Entity;
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type ToEntity = super::filling::Entity;
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fn link(&self) -> Vec<RelationDef> {
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vec![
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super::cake_filling::Relation::Cake.def().rev(),
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super::cake_filling::Relation::Filling.def(),
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]
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}
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}
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#[derive(Debug)]
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pub struct CakeToFillingVendor;
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impl Linked for CakeToFillingVendor {
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type FromEntity = super::cake::Entity;
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type ToEntity = super::vendor::Entity;
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fn link(&self) -> Vec<RelationDef> {
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vec![
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super::cake_filling::Relation::Cake.def().rev(),
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super::cake_filling::Relation::Filling.def(),
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super::filling::Relation::Vendor.def(),
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]
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}
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}
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#[derive(Debug)]
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pub struct CheeseCakeToFillingVendor;
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impl Linked for CheeseCakeToFillingVendor {
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type FromEntity = super::cake::Entity;
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type ToEntity = super::vendor::Entity;
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fn link(&self) -> Vec<RelationDef> {
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vec![
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super::cake_filling::Relation::Cake
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.def()
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.on_condition(|left, _right| {
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Expr::tbl(left, super::cake::Column::Name)
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.like("%cheese%")
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.into_condition()
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})
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.rev(),
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super::cake_filling::Relation::Filling.def(),
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super::filling::Relation::Vendor.def(),
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]
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}
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}
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#[derive(Debug)]
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pub struct JoinWithoutReverse;
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impl Linked for JoinWithoutReverse {
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type FromEntity = super::cake::Entity;
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type ToEntity = super::vendor::Entity;
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fn link(&self) -> Vec<RelationDef> {
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vec![
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super::cake_filling::Relation::Cake
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.def()
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.on_condition(|left, _right| {
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Expr::tbl(left, super::cake::Column::Name)
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.like("%cheese%")
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.into_condition()
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}),
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super::cake_filling::Relation::Filling.def(),
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super::filling::Relation::Vendor.def(),
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]
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}
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}
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