Question

我有数组包含模型，在该模型中我有3个对象，如字符串说，firstName，lastName和action，

我正在使用以下谓词

let resultPredicate = NSPredicate(format: "lastName CONTAINS [c] %@ OR firstName CONTAINS [c] %@ OR action CONTAINS [c] %@", searchText, searchText, searchText)            
tableDataArray = dataSourceArray.filter { resultPredicate.evaluateWithObject($0) }

如果我根据firstName或lastName搜索其工作正常的字符串。但是，如果我搜索action中存在的字符串，而不是过滤。任何有关这方面的帮助将不胜感激。

Answer 1

真的很奇怪......我无法找到解决方案。但是我发现了在不使用谓词的情况下过滤数组的替代方法。

tableDataArray = dataSourceArray.filter {$0.firstName.containsString(searchText) || $0.lastName.containsString(searchText) || $0.action.containsString(searchText) }

Answer 2

//Me to faced some issue, after many article i referred, found the solution

extension yourModelclassName {

    @objc override func value(forKey key: String) -> Any? {
        switch key {
        case "firstName":
            return firstName
        case "lastName":
            return lastName
        default:
            return nil
        }
    }
}

//Please put the given code in your model class like i gave above, it will work fine.

NSPredicate没有处理某些对象

2 个答案: