Model getter and setter

src/entity/column.rs

@@ -15,7 +15,15 @@ macro_rules! bind_oper {
     };
 }
 
-pub trait ColumnTrait: Iden + Copy + Debug + 'static {
+pub trait IdenStatic: Iden + Copy + Debug + 'static {
+    fn as_str(&self) -> &str;
+
+    fn unquoted(&self, s: &mut dyn std::fmt::Write) {
+        write!(s, "{}", self.as_str()).unwrap();
+    }
+}
+
+pub trait ColumnTrait: IdenStatic {
     type Entity: EntityTrait;
 
     fn def(&self) -> ColumnType;

src/entity/model.rs

@@ -1,6 +1,14 @@
-use crate::{QueryResult, TypeErr};
+use crate::{ColumnTrait, QueryResult, TypeErr};
+pub use sea_query::Value;
+use std::fmt::Debug;
+
+pub trait ModelTrait: Clone + Debug + Default {
+    type Column: ColumnTrait;
+
+    fn get(&self, c: Self::Column) -> Value;
+
+    fn set(&mut self, c: Self::Column, v: Value);
 
-pub trait ModelTrait {
     fn from_query_result(row: QueryResult) -> Result<Self, TypeErr>
     where
         Self: std::marker::Sized;

src/query/result.rs

@@ -17,12 +17,14 @@ pub struct TypeErr;
 pub trait TryGetable {
     fn try_get(res: &QueryResult, col: &str) -> Result<Self, TypeErr>
     where
-        Self: std::marker::Sized;
+        Self: Sized;
 }
 
 // TryGetable //
 
-impl TryGetable for i32 {
+macro_rules! try_getable {
+    ( $type: ty ) => {
+        impl TryGetable for $type {
             fn try_get(res: &QueryResult, col: &str) -> Result<Self, TypeErr> {
                 match &res.row {
                     QueryResultRow::SqlxMySql(row) => {
@@ -31,18 +33,36 @@ impl TryGetable for i32 {
                     }
                 }
             }
+        }
+
+        impl TryGetable for Option<$type> {
+            fn try_get(res: &QueryResult, col: &str) -> Result<Self, TypeErr> {
+                match &res.row {
+                    QueryResultRow::SqlxMySql(row) => {
+                        use sqlx::Row;
+                        match row.try_get(col) {
+                            Ok(v) => Ok(Some(v)),
+                            Err(_) => Ok(None),
+                        }
+                    }
+                }
+            }
+        }
+    };
 }
 
-impl TryGetable for String {
-    fn try_get(res: &QueryResult, col: &str) -> Result<Self, TypeErr> {
-        match &res.row {
-            QueryResultRow::SqlxMySql(row) => {
-                use sqlx::Row;
-                Ok(row.try_get(col)?)
-            }
-        }
-    }
-}
+try_getable!(bool);
+try_getable!(i8);
+try_getable!(i16);
+try_getable!(i32);
+try_getable!(i64);
+try_getable!(u8);
+try_getable!(u16);
+try_getable!(u32);
+try_getable!(u64);
+try_getable!(f32);
+try_getable!(f64);
+try_getable!(String);
 
 // QueryResult //
 
@@ -53,17 +73,6 @@ impl QueryResult {
     {
         T::try_get(self, col)
     }
-
-    pub fn try_get_option<T>(&self, col: &str) -> Result<Option<T>, TypeErr>
-    where
-        T: TryGetable,
-    {
-        if let Ok(v) = T::try_get(self, col) {
-            Ok(Some(v))
-        } else {
-            Ok(None)
-        }
-    }
 }
 
 // TypeErr //

src/tests_cfg/cake.rs

@@ -1,13 +1,13 @@
 use crate::{
-    ColumnTrait, ColumnType, EntityTrait, EnumIter, Iden, Identity, IntoIdentity, ModelTrait,
-    QueryResult, Related, RelationDef, RelationTrait, Select, TypeErr,
+    ColumnTrait, ColumnType, EntityTrait, EnumIter, Iden, IdenStatic, Identity, IntoIdentity,
+    ModelTrait, QueryResult, Related, RelationDef, RelationTrait, Select, TypeErr, Value,
 };
 
 #[derive(Default, Debug, Iden)]
 #[iden = "cake"]
 pub struct Entity;
 
-#[derive(Debug, Default, PartialEq)]
+#[derive(Clone, Debug, Default, PartialEq)]
 pub struct Model {
     pub id: i32,
     pub name: String,
@@ -36,15 +36,42 @@ impl EntityTrait for Entity {
     }
 }
 
+// TODO: implement with derive macro
 impl ModelTrait for Model {
+    type Column = Column;
+
+    fn get(&self, c: Self::Column) -> Value {
+        match c {
+            Column::Id => self.id.clone().into(),
+            Column::Name => self.name.clone().into(),
+        }
+    }
+
+    fn set(&mut self, c: Self::Column, v: Value) {
+        match c {
+            Column::Id => self.id = v.unwrap(),
+            Column::Name => self.name = v.unwrap(),
+        }
+    }
+
     fn from_query_result(row: QueryResult) -> Result<Self, TypeErr> {
         Ok(Self {
-            id: row.try_get("id")?,
-            name: row.try_get("name")?,
+            id: row.try_get(Column::Id.as_str())?,
+            name: row.try_get(Column::Name.as_str())?,
         })
     }
 }
 
+// TODO: implement with derive macro
+impl IdenStatic for Column {
+    fn as_str(&self) -> &str {
+        match self {
+            Column::Id => "id",
+            Column::Name => "name",
+        }
+    }
+}
+
 impl ColumnTrait for Column {
     type Entity = Entity;
 

src/tests_cfg/fruit.rs

@@ -1,13 +1,13 @@
 use crate::{
-    ColumnTrait, ColumnType, EntityTrait, EnumIter, Iden, Identity, IntoIdentity, ModelTrait,
-    QueryResult, RelationDef, RelationTrait, TypeErr,
+    ColumnTrait, ColumnType, EntityTrait, EnumIter, Iden, IdenStatic, Identity, IntoIdentity,
+    ModelTrait, QueryResult, RelationDef, RelationTrait, TypeErr, Value,
 };
 
 #[derive(Default, Debug, Iden)]
 #[iden = "fruit"]
 pub struct Entity;
 
-#[derive(Debug, Default, PartialEq)]
+#[derive(Clone, Debug, Default, PartialEq)]
 pub struct Model {
     pub id: i32,
     pub name: String,
@@ -36,16 +36,46 @@ impl EntityTrait for Entity {
     }
 }
 
+// TODO: implement with derive macro
 impl ModelTrait for Model {
+    type Column = Column;
+
+    fn get(&self, c: Self::Column) -> Value {
+        match c {
+            Column::Id => self.id.clone().into(),
+            Column::Name => self.name.clone().into(),
+            Column::CakeId => self.cake_id.clone().into(),
+        }
+    }
+
+    fn set(&mut self, c: Self::Column, v: Value) {
+        match c {
+            Column::Id => self.id = v.unwrap(),
+            Column::Name => self.name = v.unwrap(),
+            Column::CakeId => self.cake_id = v.unwrap(),
+        }
+    }
+
     fn from_query_result(row: QueryResult) -> Result<Self, TypeErr> {
         Ok(Self {
-            id: row.try_get("id")?,
-            name: row.try_get("name")?,
-            cake_id: row.try_get_option("cake_id")?,
+            id: row.try_get(Column::Id.as_str())?,
+            name: row.try_get(Column::Name.as_str())?,
+            cake_id: row.try_get(Column::CakeId.as_str())?,
         })
     }
 }
 
+// TODO: implement with derive macro
+impl IdenStatic for Column {
+    fn as_str(&self) -> &str {
+        match self {
+            Column::Id => "id",
+            Column::Name => "name",
+            Column::CakeId => "cake_id",
+        }
+    }
+}
+
 impl ColumnTrait for Column {
     type Entity = Entity;