Update transactions.md
This commit is contained in:
parent
9b38d9258e
commit
eac406f007
|
@ -1,5 +1,23 @@
|
||||||
# Transactions
|
# Transactions
|
||||||
|
|
||||||
Transactions are currently an experimental feature as they can not be integrated as easily as the other Firebase features.
|
Transactions are currently an experimental feature as they can not be integrated as easily as the other Firebase features. Please see the [Firebase documentation](https://firebase.google.com/docs/reference/js/firebase.database.Reference#transaction) for full implemtation details.
|
||||||
|
|
||||||
TODO
|
## Example
|
||||||
|
|
||||||
|
```javascript
|
||||||
|
const ref = firebase.database().ref('user/posts');
|
||||||
|
|
||||||
|
ref.transaction((posts) => {
|
||||||
|
return (posts || 0) + 1;
|
||||||
|
}, (error, committed, snapshot) => {
|
||||||
|
if (error) {
|
||||||
|
console.log('Something went wrong', error);
|
||||||
|
} else if (!committed) {
|
||||||
|
console.log('Aborted'); // Returning undefined will trigger this
|
||||||
|
} else {
|
||||||
|
console.log('User posts incremented by 1');
|
||||||
|
}
|
||||||
|
|
||||||
|
console.log('User posts is now: ', snapshot.val());
|
||||||
|
});
|
||||||
|
```
|
||||||
|
|
Loading…
Reference in New Issue