Struct ForeignKeyCol 

pub struct ForeignKeyCol<T> { /* private fields */ }

A foreign-key column — stored as i64, referencing the primary key of another model’s table.

Implementations

impl<T> ForeignKeyCol<T>

pub const fn new(name: &'static str) -> Self

pub fn eq<V: Into<Value>>(&self, val: V) -> Predicate<T>

SQL =.

Accepts any value convertible to sea_query::Value — i64 for the common autoincrement-PK case, String for slug-keyed parents (umbral-permissions::Permission.codename), Uuid for UUID-keyed models. The type bound is permissive so reverse-FK accessors (gap #30) emitted by the derive macro can pass the parent’s Model::PrimaryKey directly regardless of width.

Examples

Post::objects().filter(post::AUTHOR.eq(1));
UserGroup::objects().filter(usergroup::GROUP_ID.eq(group.id));

pub fn ne<V: Into<Value>>(&self, val: V) -> Predicate<T>

SQL <>. See Self::eq for the type bound rationale.

pub fn lt(&self, val: i64) -> Predicate<T>

SQL <.

pub fn le(&self, val: i64) -> Predicate<T>

SQL <=.

pub fn lte(&self, val: i64) -> Predicate<T>

Lookup-style alias for Self::le. Same as __lte in URL filter strings.

pub fn gt(&self, val: i64) -> Predicate<T>

SQL >.

pub fn ge(&self, val: i64) -> Predicate<T>

SQL >=.

pub fn gte(&self, val: i64) -> Predicate<T>

Lookup-style alias for Self::ge. Same as __gte in URL filter strings.

pub fn in_(&self, vals: &[i64]) -> Predicate<T>

SQL IN (...).

pub fn in_subquery(&self, sub: Subquery) -> Predicate<T>

SQL <col> IN (SELECT ...) against a super::Subquery (gap #26). See IntCol::in_subquery.

pub fn asc(&self) -> OrderExpr<T>

SQL ORDER BY ... ASC.

pub fn desc(&self) -> OrderExpr<T>

SQL ORDER BY ... DESC.

Trait Implementations

impl<T> FColExt<T> for ForeignKeyCol<T>

fn eq_f(&self, expr: FExpr) -> Predicate<T>

WHERE <col> = <expr>.

fn ne_f(&self, expr: FExpr) -> Predicate<T>

WHERE <col> <> <expr>.