Trait BelongsTo 

pub trait BelongsTo<P>:
    Entity
    + Clone
    + Send
    + Sync
where
    P: Entity + Debug + Send + Sync,
{
    // Required methods
    fn foreign_key() -> &'static str;
    fn foreign_key_value(&self) -> Option<String>;

    // Provided method
    fn relation_meta() -> RelationMeta { ... }
}

Trait for BelongsTo relationships (child-to-parent)

A BelongsTo relationship exists when the child entity contains a foreign key that references the parent entity.

Example

use ormkit::relations::BelongsTo;

// Post belongs to User
impl BelongsTo<User> for Post {
    fn foreign_key() -> &'static str {
        "user_id"
    }
}

Required Methods

fn foreign_key() -> &'static str

The foreign key column name on this entity

This is the column that stores the ID of the parent entity

fn foreign_key_value(&self) -> Option<String>

Get the foreign key value from this entity

Returns

The ID of the parent entity, or None if not set

Provided Methods

fn relation_meta() -> RelationMeta

Get relation metadata

Returns

Metadata about this relationship

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors