Struct butane::ForeignKey
source · pub struct ForeignKey<T>where
T: DataObject,{ /* private fields */ }
Expand description
Implementations§
source§impl<T> ForeignKey<T>where
T: DataObject,
impl<T> ForeignKey<T>where T: DataObject,
pub fn from_pk(pk: <T as DataObject>::PKType) -> ForeignKey<T>
sourcepub fn get(&self) -> Result<&T, Error>
pub fn get(&self) -> Result<&T, Error>
Returns a reference to the value. It must have already been loaded. If not, returns Error::ValueNotLoaded
sourcepub fn pk(&self) -> <T as DataObject>::PKType
pub fn pk(&self) -> <T as DataObject>::PKType
Returns a reference to the primary key of the value.
Trait Implementations§
source§impl<T> AsPrimaryKey<T> for ForeignKey<T>where
T: DataObject,
impl<T> AsPrimaryKey<T> for ForeignKey<T>where T: DataObject,
source§impl<T> Clone for ForeignKey<T>where
T: DataObject,
impl<T> Clone for ForeignKey<T>where T: DataObject,
source§fn clone(&self) -> ForeignKey<T>
fn clone(&self) -> ForeignKey<T>
Returns a copy of the value. Read more
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
Performs copy-assignment from
source
. Read moresource§impl<T> Debug for ForeignKey<T>where
T: DataObject,
impl<T> Debug for ForeignKey<T>where T: DataObject,
source§impl<'de, T> Deserialize<'de> for ForeignKey<T>where
T: DataObject,
<T as DataObject>::PKType: Deserialize<'de>,
impl<'de, T> Deserialize<'de> for ForeignKey<T>where T: DataObject, <T as DataObject>::PKType: Deserialize<'de>,
source§fn deserialize<D>(
deserializer: D
) -> Result<ForeignKey<T>, <D as Deserializer<'de>>::Error>where
D: Deserializer<'de>,
fn deserialize<D>( deserializer: D ) -> Result<ForeignKey<T>, <D as Deserializer<'de>>::Error>where D: Deserializer<'de>,
Deserialize this value from the given Serde deserializer. Read more
source§impl<T> Dummy<Faker> for ForeignKey<T>where
T: DataObject,
impl<T> Dummy<Faker> for ForeignKey<T>where T: DataObject,
Fake data support is currently limited to empty ForeignKey relationships.
source§impl<T> FieldType for ForeignKey<T>where
T: DataObject,
impl<T> FieldType for ForeignKey<T>where T: DataObject,
source§impl<T> From<&T> for ForeignKey<T>where
T: DataObject,
impl<T> From<&T> for ForeignKey<T>where T: DataObject,
source§fn from(obj: &T) -> ForeignKey<T>
fn from(obj: &T) -> ForeignKey<T>
Converts to this type from the input type.
source§impl<T> From<T> for ForeignKey<T>where
T: DataObject,
impl<T> From<T> for ForeignKey<T>where T: DataObject,
source§fn from(obj: T) -> ForeignKey<T>
fn from(obj: T) -> ForeignKey<T>
Converts to this type from the input type.
source§impl<T> FromSql for ForeignKey<T>where
T: DataObject,
impl<T> FromSql for ForeignKey<T>where T: DataObject,
source§fn from_sql_ref(valref: SqlValRef<'_>) -> Result<ForeignKey<T>, Error>
fn from_sql_ref(valref: SqlValRef<'_>) -> Result<ForeignKey<T>, Error>
Used to convert a SqlValRef into another type.
source§fn from_sql(val: SqlVal) -> Result<Self, Error>where
Self: Sized,
fn from_sql(val: SqlVal) -> Result<Self, Error>where Self: Sized,
Used to convert a SqlVal into another type. The default
implementation calls
Self::from_sql_ref(val.as_ref())
, which
may be inefficient. This method is chiefly used only for
primary keys: a more efficient implementation is unlikely to
provide benefits for types not used as primary keys.source§impl<T, U> PartialEq<U> for ForeignKey<T>where
U: AsPrimaryKey<T>,
T: DataObject,
impl<T, U> PartialEq<U> for ForeignKey<T>where U: AsPrimaryKey<T>, T: DataObject,
source§impl<T> Serialize for ForeignKey<T>where
T: DataObject,
<T as DataObject>::PKType: Serialize,
impl<T> Serialize for ForeignKey<T>where T: DataObject, <T as DataObject>::PKType: Serialize,
source§fn serialize<S>(
&self,
serializer: S
) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>where
S: Serializer,
fn serialize<S>( &self, serializer: S ) -> Result<<S as Serializer>::Ok, <S as Serializer>::Error>where S: Serializer,
Serialize this value into the given Serde serializer. Read more
source§impl<T> ToSql for ForeignKey<T>where
T: DataObject,
impl<T> ToSql for ForeignKey<T>where T: DataObject,
impl<T> Eq for ForeignKey<T>where T: DataObject,
Auto Trait Implementations§
impl<T> RefUnwindSafe for ForeignKey<T>where T: UnwindSafe + RefUnwindSafe,
impl<T> Send for ForeignKey<T>where T: Send,
impl<T> !Sync for ForeignKey<T>
impl<T> Unpin for ForeignKey<T>
impl<T> UnwindSafe for ForeignKey<T>where T: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more
§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
Checks if this value is equivalent to the given key. Read more