FireBase duplicate pushing

Asked Sep 21 '18 at 10:59

Active Sep 21 '18 at 13:58

Viewed 719 times

I want to avoid duplicate pushing into my firebase. The code is like this

const itemsRef = firebase.database().ref('Titles');
                console.log(itemsRef)
                let poster = this.state.data.Poster
                let title = this.state.data.Title
                let movieTitle = {
                    title: title,
                    poster : poster,
                }
                itemsRef.push(movieTitle)

This is how I'm storing my data

UPDATE: I solve this by making map loop and using index of.

   const pos = arr.map(function(e) { return e.title; });
                if (pos.indexOf(title) === -1){
                    itemsRef.push(movieTitle)
                } else {
                    console.log('Already exist')
                }

edited Sep 21 '18 at 13:58

KENdi

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asked Sep 21 '18 at 10:59

Kacper Łukasik

when you are using push it creates a timestamp id which is always unique. So on what criteria you don't want the duplicate data to exist ? – Lokesh Pandey Sep 21 '18 at 11:01
So ther is no way to do it? – Kacper Łukasik Sep 21 '18 at 11:07
Everything in firebase works on a link, so you can go through all the data and check if it exists or not – Lokesh Pandey Sep 21 '18 at 11:11
You will find here more info about the Firebase's push IDs: https://firebase.googleblog.com/2015/02/the-2120-ways-to-ensure-unique_68.html – Renaud Tarnec Sep 21 '18 at 11:23
I tried to use this https://stackoverflow.com/questions/24824732/test-if-a-data-exist-in-firebase but it didn't work for me ;/ – Kacper Łukasik Sep 21 '18 at 11:37
What do you exactly want to do? can you give more detail? – Renaud Tarnec Sep 21 '18 at 12:18
As you can see in the image, i have two same objects in my database. I want to do something like this if object exist dont' push else push – Kacper Łukasik Sep 21 '18 at 12:25
Ok guys, I think i finally handle this. Thank's for all help. – Kacper Łukasik Sep 21 '18 at 13:18

FireBase duplicate pushing

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