How to retrieve data from each child in Firebase? - ios

Question

I'm trying to retrieve all the values that I have in each post (post_text, timestamp, username) to be used in a Table View using Swift. I have tried this code but wasn't sure where to go from here to get each value from posts.
ref.observeEventType(.Value, withBlock: { snapshot in
self.posts = snapshot.value.objectForKey("posts") as! [String: String]
print(self.posts)
self.tableView.reloadData()
})
The JSON Firebase file:
{
"posts" : {
"-KAqlyZ71SNZfZ4Zbs27" : {
"post_text" : "Hello",
"timestamp" : 1455839242909,
"username" : "hello"
},
"-KAqmD6HPbhAVkjT54-k" : {
"post_text" : "Hi",
"timestamp" : 1455839306600,
"username" : "user7"
},
"-KAr9ATmAjObiTsn4yUC" : {
"post_text" : "Hi",
"timestamp" : 1455845587135,
"username" : "user7"
},
"-KArIBlnKSJWGhD9Me6T" : {
"post_text" : "Dddd",
"timestamp" : 1455847983983
}
},
"users" : {
"5476cde6-b343-476d-abb7-8131d3766ba7" : {
"email" : "ad#ad.com",
"posts" : {
"-KAm_8ShLSKrKKMhNjpm" : {
"post_text" : "Hello :)",
"timestamp" : 1455768771004
}
},
"provider" : "password",
"username" : "ad"
},
"b7b7de04-e180-4cac-abd3-57c016640e32" : {
"email" : "user#user.com",
"posts" : {
"-KAqmD6HPbhAVkjT54-l" : {
"post_text" : "Hi",
"timestamp" : 1455839306869
},
"-KAr9ATq-MEkYmAr2SB_" : {
"post_text" : "Hi",
"timestamp" : 1455845587513
},
"-KArIBlxY-FvbsmgF5bI" : {
"post_text" : "Dddd",
"timestamp" : 1455847985342
}
},
"provider" : "password",
"username" : "user7"
},
"fb67da22-e0dd-4ced-873b-53a588d78feb" : {
"email" : "hello#hi.com",
"posts" : {
"-KAqlyZAah6bclwqWi5M" : {
"post_text" : "Hello",
"timestamp" : 1455839243184
}
},
"provider" : "password",
"username" : "hello"
}
}
}
How could I do this?

Answer 1

You can just create an object Post that can be initialized by a Dictionary. Then, just fetch the single key with his value.
var posts : [Post] = []()
json.forEach { (key, dictionary) -> in
let post = Post(
key: key,
dictionary: dictionary
)
posts.append(post)
}