/// <summary>
/// Applies a filter to a collection property.
/// </summary>
/// <param name="rule">The current rule</param>
/// <param name="predicate">The condition</param>
/// <returns></returns>
public static IRuleBuilderInitialCollection <T, TCollectionElement> Where <T, TCollectionElement>(this IRuleBuilderInitialCollection <T, TCollectionElement> rule, Func <TCollectionElement, bool> predicate)
{
// This overload supports RuleFor().SetCollectionValidator() (which returns IRuleBuilderOptions<T, IEnumerable<TElement>>)
predicate.Guard("Cannot pass null to Where.", nameof(predicate));
return(rule.Configure(cfg => {
cfg.Filter = predicate;
}));
}
/// <summary>
/// Allows the generated indexer to be overridden for collection rules.
/// </summary>
/// <param name="rule">The current rule</param>
/// <param name="callback">The callback. Receives the model, the collection, the current element and the current index as parameters. Should return a string representation of the indexer. The default is "[" + index + "]"</param>
/// <returns></returns>
public static IRuleBuilderInitialCollection <T, TCollectionElement> OverrideIndexer <T, TCollectionElement>(this IRuleBuilderInitialCollection <T, TCollectionElement> rule, Func <T, IEnumerable <TCollectionElement>, TCollectionElement, int, string> callback)
{
// This overload supports RuleFor().SetCollectionValidator() (which returns IRuleBuilderOptions<T, IEnumerable<TElement>>)
callback.Guard("Cannot pass null to OverrideIndexer.", nameof(callback));
return(rule.Configure(cfg => {
cfg.IndexBuilder = (x, collection, element, index) => callback((T)x, (IEnumerable <TCollectionElement>)collection, (TCollectionElement)element, index);
}));
}
/// <summary>
/// Transforms the property value before validation occurs. The transformed value must be of the same type as the input value.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <typeparam name="TProperty"></typeparam>
/// <param name="ruleBuilder"></param>
/// <param name="transformationFunc"></param>
/// <returns></returns>
public static IRuleBuilderInitialCollection <T, TProperty> Transform <T, TProperty>(this IRuleBuilderInitialCollection <T, TProperty> ruleBuilder, Func <TProperty, TProperty> transformationFunc)
{
return(ruleBuilder.Configure(cfg => {
cfg.Transformer = transformationFunc.CoerceToNonGeneric();
}));
}
/// <summary>
/// Specifies the cascade mode for failures.
/// If set to 'Stop' then execution of the rule will stop once the first validator in the chain fails.
/// If set to 'Continue' then all validators in the chain will execute regardless of failures.
/// </summary>
public static IRuleBuilderInitialCollection <T, TProperty> Cascade <T, TProperty>(this IRuleBuilderInitialCollection <T, TProperty> ruleBuilder, CascadeMode cascadeMode)
{
return(ruleBuilder.Configure(cfg => {
cfg.CascadeMode = cascadeMode;
}));
}