Trait diesel_async::UpdateAndFetchResults
source · pub trait UpdateAndFetchResults<Changes, Output>: AsyncConnectionwhere
Changes: Identifiable + HasTable,{
// Required method
fn update_and_fetch<'life0, 'async_trait>(
&'life0 mut self,
changeset: Changes
) -> Pin<Box<dyn Future<Output = QueryResult<Output>> + Send + 'async_trait>>
where Changes: 'async_trait,
Self: 'async_trait,
'life0: 'async_trait;
}
Expand description
A trait defining how to update a record and fetch the updated entry on a certain backend.
The only case where it is required to work with this trait is while
implementing a new connection type.
Otherwise use SaveChangesDsl
For implementing this trait for a custom backend:
- The
Changes
generic parameter represents the changeset that should be stored - The
Output
generic parameter represents the type of the response.
Required Methods§
sourcefn update_and_fetch<'life0, 'async_trait>(
&'life0 mut self,
changeset: Changes
) -> Pin<Box<dyn Future<Output = QueryResult<Output>> + Send + 'async_trait>>where
Changes: 'async_trait,
Self: 'async_trait,
'life0: 'async_trait,
fn update_and_fetch<'life0, 'async_trait>( &'life0 mut self, changeset: Changes ) -> Pin<Box<dyn Future<Output = QueryResult<Output>> + Send + 'async_trait>>where Changes: 'async_trait, Self: 'async_trait, 'life0: 'async_trait,
See the traits documentation.