Writing operation fails - firebase database rules - firebase

Question

I have the following object:
const offer = {
offerInfo: {
price: '',
status: 'open',
message: '',
ownerUID: '',
ownerName: '',
ownerPhoto: '',
ownerAvgRating: '',
ownerReviewNumber: '',
},
offerMetaData: {
userHasSeenOffer: false,
userHasBeenNotified: false,
}
}
I am trying to post it to the following node:
updates['jobs/${activeJob.key}/offers/${currentUser.uid}] = offer;
and then firebase.database().ref().update(updates)
As you can see I am using the users uid as the id of the offer itself.
Now when I try to post it using the following rules, I get a permission denied error and I have no clue why.
Rules:
"jobs": {
"$job_uid": {
".read": "auth !== null",
"job": {
".write": "!data.exists() && root.child('allUsers/serviceUsers/' + auth.uid + '/paymentDetails').exists() || data.exists() && root.child('jobs/' + $job_uid + '/job/owner').val() === auth.uid",
},
"offers": {
"$offer_uid": {
"offerInfo": {
".write": "$offer_uid === auth.uid",
},
"offerMetaData": {
".write": "root.child('jobs/' + $job_uid + '/job/owner').val() === auth.uid || $offer_uid === auth.uid",
},
},
},
...
Any ideas?

Answer 1

You are trying to write directly to $offer_uid but you don't have any write rules on that node so it will use the default false.
For you current write to succeed you can change your rules like this:
"$offer_uid": {
".write": "$offer_uid === auth.uid",
"offerMetaData": {
".write": "root.child('jobs/' + $job_uid + '/job/owner').val() === auth.uid",
},
},
I moved the write rule one node up, directly in $offer_uid, instead of having it in both the childs seperatly.
Another option would be to keep your rules and split your write so you are writing to the child nodes.