OnlyOneExistsRule class
Validation rule that check that at exactly one of the object properties is not null.
See IValidationRule
Example
var schema = Schema()
.withRule( OnlyOneExistsRule('field1', 'field2'));
schema.validate({ field1: 1, field2: 'A' }); // Result: only one of properties field1, field2 must exist
schema.validate({ field1: 1 }); // Result: no errors
schema.validate({ }); // Result: only one of properties field1, field2 must exist
- Implemented types
Constructors
-
OnlyOneExistsRule(List<
String> properties) - Creates a new validation rule and sets its values [...]
Properties
- hashCode → int
-
The hash code for this object. [...]
read-only, inherited
- runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Methods
-
validate(
String path, Schema schema, dynamic value, List< ValidationResult> results) → void -
Validates a given value against this rule. [...]
override
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed. [...]
inherited
-
toString(
) → String -
Returns a string representation of this object.
inherited
Operators
-
operator ==(
dynamic other) → bool -
The equality operator. [...]
inherited