public void ApplyCondition(Func <object, bool> predicate, ApplyConditionTo applyConditionTo = ApplyConditionTo.AllValidators)
{
// Default behaviour for When/Unless as of v1.3 is to apply the condition to all previous validators in the chain.
if (applyConditionTo == ApplyConditionTo.AllValidators)
{
foreach (var validator in Validators.ToList())
{
var wrappedValidator = new DelegatingValidator(predicate, validator);
ReplaceValidator(validator, wrappedValidator);
}
}
else
{
var wrappedValidator = new DelegatingValidator(predicate, CurrentValidator);
ReplaceValidator(CurrentValidator, wrappedValidator);
}
}
/// <summary>
/// Specifies a condition limiting when the validator should run.
/// The validator will only be executed if the result of the lambda returns true.
/// </summary>
/// <param name="rule">The current rule</param>
/// <param name="predicate">A lambda expression that specifies a condition for when the validator should run</param>
/// <param name="applyConditionTo">Whether the condition should be applied to the current rule or all rules in the chain</param>
/// <returns></returns>
public static IRuleBuilderOptions <T, TProperty> When <T, TProperty>(this IRuleBuilderOptions <T, TProperty> rule, Func <T, bool> predicate, ApplyConditionTo applyConditionTo = ApplyConditionTo.AllValidators)
{
predicate.Guard("A predicate must be specified when calling When.");
return(rule.Configure(config => {
// Default behaviour for When/Unless as of v1.3 is to apply the condition to all previous validators in the chain.
if (applyConditionTo == ApplyConditionTo.AllValidators)
{
foreach (var validator in config.Validators.ToList())
{
var wrappedValidator = new DelegatingValidator(x => predicate((T)x), validator);
config.ReplaceValidator(validator, wrappedValidator);
}
}
else
{
var wrappedValidator = new DelegatingValidator(x => predicate((T)x), config.CurrentValidator);
config.ReplaceValidator(config.CurrentValidator, wrappedValidator);
}
}));
}
/// <summary>
/// Applies the condition to the rule asynchronously
/// </summary>
/// <param name="predicate"></param>
/// <param name="applyConditionTo"></param>
public void ApplyAsyncCondition(Func <ValidationContext, CancellationToken, Task <bool> > predicate, ApplyConditionTo applyConditionTo = ApplyConditionTo.AllValidators)
{
// Default behaviour for When/Unless as of v1.3 is to apply the condition to all previous validators in the chain.
if (applyConditionTo == ApplyConditionTo.AllValidators)
{
foreach (var validator in Validators.ToList())
{
var wrappedValidator = new DelegatingValidator(predicate, validator);
ReplaceValidator(validator, wrappedValidator);
}
foreach (var dependentRule in DependentRules.ToList())
{
dependentRule.ApplyAsyncCondition(predicate, applyConditionTo);
}
}
else
{
var wrappedValidator = new DelegatingValidator(predicate, CurrentValidator);
ReplaceValidator(CurrentValidator, wrappedValidator);
}
}
