UniqueRule class

Validates that a value is unique in a database table.

Signature: unique:table,column,except,idColumn,extraCol,extraVal...

Examples:

• unique:users,email - Email must be unique in users table.
• unique:users,email,1 - Email unique, ignoring id 1.
• unique:users,email,1,user_id - Email unique, ignoring user_id 1.
• unique:users,email,NULL,NULL,role,admin - Email unique AND role=admin.

Inheritance

• Object
• Rule
• UniqueRule

Constructors

UniqueRule([String? _table, String? _column, dynamic _ignoreId, String _ignoreColumn = 'id'])

Properties

customMessage ↔ String?

The error message to be returned if validation fails. Can be overridden by the user.

getter/setter pair, inherited

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

signature → String

Returns the unique signature of the rule. Defaults to the class name in snake_case (logic handled by registry usually, but good to have).

no setter, override

Methods

message(ValidationContext context) → String

Returns the validation error message.

override

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

passes(ValidationContext context) → FutureOr<bool>

Validates the value using the given context.

override

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited