Struct UniquenessValidator 

pub struct UniquenessValidator {
    pub scope: Vec<String>,
    pub case_sensitive: bool,
    pub message: Option<String>,
}

Record-level uniqueness validation metadata and database lookup behavior.

Fields

scope: Vec<String>

Additional attributes intended to narrow the uniqueness scope.

Scope metadata is retained even though the current generic record API cannot yet project sibling attribute values for query construction.

case_sensitive: bool

Whether string comparisons preserve case.

message: Option<String>

Optional custom validation message for higher layers.

Implementations

impl UniquenessValidator

pub fn new() -> Self

Creates a new uniqueness validator.

pub fn scope(self, fields: Vec<String>) -> Self

Sets additional scope fields for the uniqueness rule.

pub fn case_insensitive(self) -> Self

Marks the validator as case-insensitive for string comparisons.

pub fn message(self, message: impl Into<String>) -> Self

Overrides the default error message recorded by higher layers.

pub async fn validate_unique<R: Record>( &self, attribute: &str, value: &Value, record: &R, db: &DatabaseConnection, ) -> bool

where <R::Entity as EntityTrait>::Column: ColumnTrait + Iterable, <R::Entity as EntityTrait>::Model: FromQueryResult + Send + Sync,

Checks whether the candidate value is unique for the target attribute.

The current generic implementation validates the requested attribute and excludes the current record by primary key when present. scope metadata is stored for future use once generic sibling-attribute access is available across all record types.

pub fn validate_unique_sync<R: Record>( &self, attribute: &str, value: &Value, record: &R, ) -> bool

where <R::Entity as EntityTrait>::Column: ColumnTrait + Iterable, <R::Entity as EntityTrait>::Model: FromQueryResult + Send + Sync,

Synchronous wrapper for Self::validate_unique.

Trait Implementations

impl Clone for UniquenessValidator

fn clone(&self) -> UniquenessValidator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UniquenessValidator

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

Formats the value using the given formatter.

impl Default for UniquenessValidator

fn default() -> UniquenessValidator

Returns the “default value” for a type.

impl PartialEq for UniquenessValidator

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for UniquenessValidator

impl StructuralPartialEq for UniquenessValidator