干得好:
class RowTemplateRelationshipAny: NSPredicateEditorRowTemplate {
override func predicate(withSubpredicates subpredicates: [NSPredicate]?) -> NSPredicate{
let predicate: NSComparisonPredicate = super.predicate(withSubpredicates: subpredicates) as! NSComparisonPredicate
let newPredicate = NSComparisonPredicate(leftExpression: predicate.leftExpression, rightExpression: predicate.rightExpression, modifier: .any, type: predicate.predicateOperatorType, options: predicate.options)
return newPredicate
}
}
class RowTemplateRelationshipAll: NSPredicateEditorRowTemplate {
override func predicate(withSubpredicates subpredicates: [NSPredicate]?) -> NSPredicate{
let predicate: NSComparisonPredicate = super.predicate(withSubpredicates: subpredicates) as! NSComparisonPredicate
let newPredicate = NSComparisonPredicate(leftExpression: predicate.leftExpression, rightExpression: predicate.rightExpression, modifier: .all, type: predicate.predicateOperatorType, options: predicate.options)
return newPredicate
}
}
只需将 IB 中的行模板类更改为 RowTemplateRelationshipAny 或 RowTemplateRelationshipAll。