Derive macro

[tyt2y3]

@acidic9
https://github.com/SeaQL/sea-orm/blob/master/sea-orm-macros/src/derives/model.rs
You can actually view the macro expansion by cargo expand

use sea_orm::DeriveModel;

#[derive(DeriveModel)]
pub struct Model {
    pub id: i32,
    pub name: String,
}

impl sea_orm::ModelTrait for Model {
    type Entity = Entity;
    fn get(&self, c: <Self::Entity as EntityTrait>::Column) -> sea_orm::Value {
        match c {
            <Self::Entity as EntityTrait>::Column::Id => self.id.clone().into(),
            <Self::Entity as EntityTrait>::Column::Name => self.name.clone().into(),
            _ => ::std::rt::begin_panic("This Model does not have this field"),
        }
    }
    fn set(&mut self, c: <Self::Entity as EntityTrait>::Column, v: sea_orm::Value) {
        match c {
            <Self::Entity as EntityTrait>::Column::Id => self.id = v.unwrap(),
            <Self::Entity as EntityTrait>::Column::Name => self.name = v.unwrap(),
            _ => ::std::rt::begin_panic("This Model does not have this field"),
        }
    }
}
impl sea_orm::FromQueryResult for Model {
    fn from_query_result(row: &sea_orm::QueryResult, pre: &str) -> Result<Self, sea_orm::TypeErr> {
        Ok(Self {
            id: row.try_get(
                pre,
                <<Self as ModelTrait>::Entity as EntityTrait>::Column::Id
                    .as_str()
                    .into(),
            )?,
            name: row.try_get(
                pre,
                <<Self as ModelTrait>::Entity as EntityTrait>::Column::Name
                    .as_str()
                    .into(),
            )?,
        })
    }
}