validate method

@override bool validate(T value, Map<String, FormFieldState> fields)

Validates the given value against the validation rule.

• value: The value to be validated.
• fields: A map of form field states for cross-field validation.

Returns true if the validation passes, false otherwise.

Implementation

@override
bool validate(T value, Map<String, FormFieldState> fields) {
  // If the value is null, an empty string, or an empty list, skip validation
  if (value == null || (value is String && value.isEmpty) || (value is List && value.isEmpty)) {
    return true;
  }

  // If the value is present, we proceed to validate with other rules
  return false;  // Returning false indicates that other rules should now validate this field
}