Unable to update an object using firebase transaction function
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I want to update an object using firebase transaction function. I read all document and all the available resources. If data is availabe on particular node, below transaction function is removing data from that node. Can someone help me on this, what's wrong with the below code?
Note:- Using transaction instead of update function because values can be updated at the same time.
await refRun.once('value', snap => {
console.log(snap.val()); // Here I am able to get data
})
refRun.transaction(async (current) => {
if (current === null) {
console.log("coming", current);
// updating values by fetcing from node
return await refRun.once('value', function (snapshot) {
console.log("coming", snapshot.val()); // coming null here
if (snapshot.val() === null) {
console.log("coming----1", snapshot.val());
return {
total_raised: workout.run_amount || 0,
total_distance: workout.distance || 0.0
}
}
else {
console.log("coming----2", snapshot.val());
return {
user_total_raised: snapshot.val().user_total_raised + workout.run_amount || 0,
user_total_distance: snapshot.val().user_total_distance + workout.distance || 0.0
}
}
})
}
console.log("coming-123", current); // null
});
javascript node.js firebase-realtime-database transactions
edited Nov 29 '18 at 10:45
mihai
24.8k74169
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
add a comment |
0
I want to update an object using firebase transaction function. I read all document and all the available resources. If data is availabe on particular node, below transaction function is removing data from that node. Can someone help me on this, what's wrong with the below code?
Note:- Using transaction instead of update function because values can be updated at the same time.
await refRun.once('value', snap => {
console.log(snap.val()); // Here I am able to get data
})
refRun.transaction(async (current) => {
if (current === null) {
console.log("coming", current);
// updating values by fetcing from node
return await refRun.once('value', function (snapshot) {
console.log("coming", snapshot.val()); // coming null here
if (snapshot.val() === null) {
console.log("coming----1", snapshot.val());
return {
total_raised: workout.run_amount || 0,
total_distance: workout.distance || 0.0
}
}
else {
console.log("coming----2", snapshot.val());
return {
user_total_raised: snapshot.val().user_total_raised + workout.run_amount || 0,
user_total_distance: snapshot.val().user_total_distance + workout.distance || 0.0
}
}
})
}
console.log("coming-123", current); // null
});
javascript node.js firebase-realtime-database transactions
edited Nov 29 '18 at 10:45
mihai
24.8k74169
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
add a comment |
0
0
0
I want to update an object using firebase transaction function. I read all document and all the available resources. If data is availabe on particular node, below transaction function is removing data from that node. Can someone help me on this, what's wrong with the below code?
Note:- Using transaction instead of update function because values can be updated at the same time.
await refRun.once('value', snap => {
console.log(snap.val()); // Here I am able to get data
})
refRun.transaction(async (current) => {
if (current === null) {
console.log("coming", current);
// updating values by fetcing from node
return await refRun.once('value', function (snapshot) {
console.log("coming", snapshot.val()); // coming null here
if (snapshot.val() === null) {
console.log("coming----1", snapshot.val());
return {
total_raised: workout.run_amount || 0,
total_distance: workout.distance || 0.0
}
}
else {
console.log("coming----2", snapshot.val());
return {
user_total_raised: snapshot.val().user_total_raised + workout.run_amount || 0,
user_total_distance: snapshot.val().user_total_distance + workout.distance || 0.0
}
}
})
}
console.log("coming-123", current); // null
});
javascript node.js firebase-realtime-database transactions
edited Nov 29 '18 at 10:45
mihai
24.8k74169
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
I want to update an object using firebase transaction function. I read all document and all the available resources. If data is availabe on particular node, below transaction function is removing data from that node. Can someone help me on this, what's wrong with the below code?
Note:- Using transaction instead of update function because values can be updated at the same time.
await refRun.once('value', snap => {
console.log(snap.val()); // Here I am able to get data
})
refRun.transaction(async (current) => {
if (current === null) {
console.log("coming", current);
// updating values by fetcing from node
return await refRun.once('value', function (snapshot) {
console.log("coming", snapshot.val()); // coming null here
if (snapshot.val() === null) {
console.log("coming----1", snapshot.val());
return {
total_raised: workout.run_amount || 0,
total_distance: workout.distance || 0.0
}
}
else {
console.log("coming----2", snapshot.val());
return {
user_total_raised: snapshot.val().user_total_raised + workout.run_amount || 0,
user_total_distance: snapshot.val().user_total_distance + workout.distance || 0.0
}
}
})
}
console.log("coming-123", current); // null
});
javascript node.js firebase-realtime-database transactions
javascript node.js firebase-realtime-database transactions
edited Nov 29 '18 at 10:45
mihai
24.8k74169
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
edited Nov 29 '18 at 10:45
mihai
24.8k74169
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
edited Nov 29 '18 at 10:45
mihai
24.8k74169
edited Nov 29 '18 at 10:45
mihai
24.8k74169
edited Nov 29 '18 at 10:45
mihai
24.8k74169
24.8k74169
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
asked Nov 29 '18 at 6:38
Nishant KhandelwalNishant Khandelwal
4718
4718
add a comment |
add a comment |
0
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