Question

 do {
        let result = try Realm().objects(Pros.self)
        print(result)
        let filterResult = result.filter({ $0.category.filter({$0.type_cat == ""})})

        print(filterResult)
    }
    catch {

        print(error)

    }

它给我的错误是＆＃34;模糊地提及会员＆＃39; ==＆＃39;＆＃34; 所以我想要添加

Answer 1

我找到了解决方案，它的工作非常适合我

do {
            let result = try Realm().objects(Pros.self)
            print(result)
            let predicate = NSPredicate(format: "SELF.type == %@ AND SELF.status == 'valide' AND ANY category.type_sector = %@ AND SELF.status == 'valide'", arrType[(selectedFromType?.row)!], arrTypeSector[(selectedFromSector?.row)!])
            let arrFiltered =  result.filter(predicate)
            print(arrFiltered)


        }
        catch
        {
            print(error)

        }

Answer 2

根据Realm docs过滤章节，尝试更改您的请求：

let type = ""
let result = try Realm().objects(Pros.self).filter("category.type_cat ==  %@",type)

Answer 3

Realm().objects(Pros.self)将返回Result<Pros>哪种领域数据。你的filter函数语法是Swift的函数，不是Realm的函数。在使用Result<Pros>之前，您应该将[Pros]转换为filter：

let result = Array(try Realm().objects(Pros.self))
let filterResult = result.filter({ $0.category.filter({$0.type_cat == ""})})

或者您可以在Realm中使用filter函数构建。请查看realm.io docs。

对会员＆＃39; ==＆＃39;的模棱两可的提及使用领域过滤器

3 个答案: