Trait diesel::query_builder::IntoUpdateTarget
source · pub trait IntoUpdateTarget: HasTable {
type WhereClause;
// Required method
fn into_update_target(self) -> UpdateTarget<Self::Table, Self::WhereClause>;
}
Expand description
A type which can be passed to update
or delete
.
Apps will never need to implement this type directly. There are three kinds
which implement this trait. Tables, queries which have only had filter
called on them, and types which implement Identifiable
.
When a table is passed to update
, every row in the table will be updated.
You can scope this down by calling filter
which will
result in UPDATE your_table SET ... WHERE args_to_filter
. Passing a type
which implements Identifiable
is the same as passing
SomeStruct::table().find(some_struct)
.
Required Associated Types§
sourcetype WhereClause
type WhereClause
What is the WHERE
clause of this target?
Required Methods§
sourcefn into_update_target(self) -> UpdateTarget<Self::Table, Self::WhereClause>
fn into_update_target(self) -> UpdateTarget<Self::Table, Self::WhereClause>
Decomposes self
into the table and where clause.
Object Safety§
This trait is not object safe.