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ForeignKey

Struct ForeignKey 

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pub struct ForeignKey {
    pub name: Option<Ident>,
    pub columns: Vec<Ident>,
    pub ref_table: Ident,
    pub ref_columns: Vec<Ident>,
    pub on_delete: Option<ForeignKeyAction>,
    pub on_update: Option<ForeignKeyAction>,
}
Expand description

A foreign-key constraint.

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§name: Option<Ident>

The optional constraint name.

§columns: Vec<Ident>

The local columns.

§ref_table: Ident

The referenced table.

§ref_columns: Vec<Ident>

The referenced columns.

§on_delete: Option<ForeignKeyAction>

The ON DELETE action.

§on_update: Option<ForeignKeyAction>

The ON UPDATE action.

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impl ForeignKey

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pub fn new<C: IntoIden, R: IntoIden>( columns: impl IntoIterator<Item = C>, ref_table: impl IntoIden, ref_columns: impl IntoIterator<Item = R>, ) -> Self

Builds FOREIGN KEY (columns) REFERENCES table (ref_columns).

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pub fn name(self, name: impl IntoIden) -> Self

Sets the constraint name.

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pub fn on_delete(self, action: ForeignKeyAction) -> Self

Sets ON DELETE action.

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pub fn on_update(self, action: ForeignKeyAction) -> Self

Sets ON UPDATE action.

Trait Implementations§

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impl Clone for ForeignKey

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fn clone(&self) -> Self

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for ForeignKey

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

Formats the value using the given formatter. Read more
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impl Eq for ForeignKey

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impl PartialEq for ForeignKey

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for ForeignKey

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Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.