I have an NSPredicateEditor
instance named editor
configured with the following row templates:
NSMutableArray *finalTemplates = [NSMutableArray arrayWithCapacity:2];
for(NSString *keyPath in @[@"sampleName",@"comment"]) {
NSPredicateEditorRowTemplate *template = [[NSPredicateEditorRowTemplate alloc] initWithLeftExpressions:@[[NSExpression expressionForKeyPath:keyPath]]
rightExpressionAttributeType:NSStringAttributeType
modifier:NSDirectPredicateModifier
operators:@[@(NSContainsPredicateOperatorType), @(NSBeginsWithPredicateOperatorType)]
options: 0];
[finalTemplates addObject:template];
}
NSArray *compoundTypes = @[@(NSNotPredicateType), @(NSAndPredicateType), @(NSOrPredicateType)];
NSPredicateEditorRowTemplate *compound = [[NSPredicateEditorRowTemplate alloc] initWithCompoundTypes:compoundTypes];
editor.rowTemplates = [@[compound] arrayByAddingObjectsFromArray:finalTemplates];
This seems simple enough, but I can't make it work. When I try:
editor.objectValue = [NSPredicate predicateWithFormat: @"NOT sampleName CONTAINS ''"];
editor.objectValue = [NSPredicate predicateWithFormat: @"NONE sampleName CONTAINS ''"];
editor.objectValue = [NSCompoundPredicate notPredicateWithSubpredicate: [NSPredicate predicateWithFormat: @"sampleName CONTAINS ''"]];
each results in an exception:
unable to find template matching predicate (...)
When I do:
editor.objectValue = [NSPredicate predicateWithFormat: @"NOT (sampleName CONTAINS '' OR comment CONTAINS '')"];
this works, but it's not what I want.
IOW, how can I make it show the "None" row with only one other row?
Note: I have no issue making it show the "Any" or "All" row template following by "sampleName contains ...".
NONE
is NOT ( OR )
. I don't think there's a format but in code it is:
[NSCompoundPredicate notPredicateWithSubpredicate:
[NSCompoundPredicate orPredicateWithSubpredicates:
@[[NSPredicate predicateWithFormat: @"sampleName CONTAINS ''"]]]];