根据数组检索某些PFObject

I've looked all over and people say that using whereKey: equalTo: will work in an array but for some reason it doesn't for me. I'm trying to have users search for a tag and all post that contain that tag appear. when I remove whereKey: equalTo: I get all results but with it I get nothing. Any help would be greatly appreciated. Here is the code that takes care of creating and querying the class.

我看了一遍，人们说使用whereKey：equalTo：将在数组中工作但由于某种原因它不适合我。我正在尝试让用户搜索标记，并显示包含该标记的所有帖子。当我删除whereKey：equalTo：我得到了所有结果但是我得到了什么。任何帮助将不胜感激。以下是负责创建和查询类的代码。

import Foundation

class WallPost: PFObject, PFSubclassing {

@NSManaged var post: String
@NSManaged var user: PFUser
@NSManaged var tags: [String]

init(post: String, user: PFUser, tags: [String]) {
    super.init()

    self.post = post
    self.user = user
    self.tags = tags
}

override init() {
    super.init()
}



override class func query() -> PFQuery?{
    let query = PFQuery(className: parseClassName())
    query.includeKey("user")
    query.whereKey("tags", equalTo: "rock")




    query.orderByDescending("createdAt")
    return query
}

class func parseClassName() -> String {
    return "POST"
}

override class func initialize(){
    var onceToken: dispatch_once_t = 0
    dispatch_once(&onceToken) {
        self.registerSubclass()
    }
}
}

I've added a screenshot of the parse class here

我在这里添加了解析类的截图

1 个解决方案

#1

If "tags" is the name of the array in parse, then you need to add this parameter to your query:

如果“tags”是解析中数组的名称，则需要将此参数添加到查询中：

query.whereKey("rock", containedIn: "tags")