Enum ActiveHasOne 

pub enum ActiveHasOne<E>
where
    E: EntityTrait,
{
    NotSet,
    Set(Option<Box<E::ActiveModelEx>>),
}

State carried by a has_one field on an ActiveModelEx.

Unstable: nested-ActiveModel relation mutation is exempt from semver — the semantics of setting or removing related records may change in a minor (2.x) release.

Variants

NotSet

Field is absent; the related model is left as-is on save.

Set(Option<Box<E::ActiveModelEx>>)

Set or clear the related ActiveModel on save.

Implementations

impl<E> ActiveHasOne<E>

where E: EntityTrait,

pub fn set(model: Option<impl Into<E::ActiveModelEx>>) -> Self

Construct an ActiveHasOne::Set from an optional related active model.

pub fn is_not_set(&self) -> bool

Return true if self is NotSet

pub fn is_set(&self) -> bool

Return true if there is a set value

pub fn as_ref(&self) -> Option<&E::ActiveModelEx>

Get a reference, if set

pub fn as_mut(&mut self) -> Option<&mut E::ActiveModelEx>

Get a mutable reference, if set

pub fn is_changed(&self) -> bool

Return true if the containing model is set and changed

pub fn into_option(self) -> Option<E::ActiveModelEx>

Convert into an Option<ActiveModelEx>

pub fn try_into_model(self) -> Result<HasOne<E>, DbErr>

where E::ActiveModelEx: TryIntoModel<E::ModelEx>,

Convert this back to a ModelEx container

Trait Implementations

impl<E> Clone for ActiveHasOne<E>

where E: EntityTrait, E::ActiveModelEx: Clone,

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<E> Debug for ActiveHasOne<E>

where E: EntityTrait, E::ActiveModelEx: Debug,

fn fmt(&self, __f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<E> Default for ActiveHasOne<E>

where E: EntityTrait,

fn default() -> ActiveHasOne<E>

Returns the “default value” for a type.

impl<E> Eq for ActiveHasOne<E>

where E: EntityTrait, E::ActiveModelEx: Eq,

impl<E> PartialEq for ActiveHasOne<E>

where E: EntityTrait, E::ActiveModelEx: PartialEq,

fn eq(&self, __other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.