Struct NavigationMeta 

pub struct NavigationMeta {

    pub field_name: Cow<'static, str>,
    pub kind: NavigationKind,
    pub related_type_id: TypeId,
    pub related_type_name: Cow<'static, str>,
    pub foreign_key_field: Option<Cow<'static, str>>,
    pub inverse_navigation: Option<Cow<'static, str>>,
    pub through_type_id: Option<TypeId>,
    pub through_table: Option<Cow<'static, str>>,
    pub through_parent_fk: Option<Cow<'static, str>>,
    pub through_related_fk: Option<Cow<'static, str>>,
    pub through_parent_fk_index: usize,
    pub through_related_fk_index: usize,
    pub related_table: Option<Cow<'static, str>>,
    pub fk_column: Option<Cow<'static, str>>,
    pub referenced_key_column: Option<Cow<'static, str>>,
    pub fk_row_index: usize,
    pub pk_row_index: usize,
    pub related_entity_meta: Option<fn() -> EntityTypeMeta>,
    pub delete_behavior: Option<DeleteBehavior>,
}

Metadata describing a navigation property (relationship). Corresponds to EFCore’s INavigation.

Fields

field_name: Cow<'static, str>

The Rust field name of this navigation property.

kind: NavigationKind

The kind of navigation (BelongsTo, HasOne, HasMany).

related_type_id: TypeId

The related entity’s TypeId.

related_type_name: Cow<'static, str>

The related entity’s type name.

foreign_key_field: Option<Cow<'static, str>>

The foreign key property name on the dependent entity.

inverse_navigation: Option<Cow<'static, str>>

The inverse navigation field name on the related entity.

through_type_id: Option<TypeId>

For many-to-many: the join entity TypeId.

through_table: Option<Cow<'static, str>>

Join table name (many-to-many).

through_parent_fk: Option<Cow<'static, str>>

FK column on the join table pointing to the principal entity.

through_related_fk: Option<Cow<'static, str>>

FK column on the join table pointing to the related entity.

through_parent_fk_index: usize

Column index in join-table rows for the principal FK.

through_related_fk_index: usize

Column index in join-table rows for the related FK.

related_table: Option<Cow<'static, str>>

Related entity table name (for eager loading).

fk_column: Option<Cow<'static, str>>

Foreign key column on the dependent/related table.

referenced_key_column: Option<Cow<'static, str>>

Referenced key column on the principal table.

fk_row_index: usize

Column index in SELECT * rows for the FK (HasMany grouping).

pk_row_index: usize

Column index in SELECT * rows for the related PK (BelongsTo lookup).

related_entity_meta: Option<fn() -> EntityTypeMeta>

Resolves metadata for the related entity type (nested Include / ThenInclude).

delete_behavior: Option<DeleteBehavior>

Delete behavior for this navigation. None means use the default (Cascade for required FKs and M2M, Restrict for optional FKs). Set via #[on_delete(Cascade|Restrict|SetNull|NoAction)].

Trait Implementations

impl Clone for NavigationMeta

fn clone(&self) -> NavigationMeta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NavigationMeta

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

Formats the value using the given formatter.