我如何将新项目添加到Firebase中的同一节点

Question

I want to add a new item to my list, I use firebase without user(email,password)

I have page for search and other to show detail , how i can add more detail for the same node , And i don't know which node you want to add a child to.

I want to add new items like this:-

Start with:

-vdjs43ndjufd87

     "name" : Jak

    "university" : Harvard

End with:

-vdjs43ndjufd87

     "name" : Jak

     "university" : Harvard

     "age" : 23

this code is not working with me:-

 let key = ref.child("posts").childByAutoId().key

 let post = ["uid": userID, "author": username, "title": title, "body": body]

let childUpdates = ["/posts/(key)": post, "/user-posts/(userID)/(key)/": post]

ref.updateChildValues(childUpdates)

Answer 1

You have to know the id of post in which you want to add a new item. Otherwise there isn't any way to solve your problem. For example, you have a page with table view which shows list of posts. Also to populate cells of table you hold an array of posts. Every post object should have id property. When you select row in table you should get indexPath of it and get post from array with indexPath.row index. From selected post you get id and this is all. Now you have post id and you can download info about this post and also add some new items to node with this id.

ref.child("posts").child(postId).updateChildValues(childUpdates)