Firestore security rules: How to validate that a field is undefined?
When a user signs up and they initialise their data in firestore, I want to validate that they aren't attempting to set their role (i.e. so they're not setting it to 'admin' for example).
I tried to write this:
match /users/{userId} {
allow create: if (signedInAs(userId) && !request.resource.data.role) || isAdmin();
...
...but I just see "Property role is undefined on object."
Is there a way to do this safely? Or does this mean I should always be initialising expected fields, even if it's just to the empty string? That doesn't seem to quite fit with the philosophy of NoSQL?
firebase google-cloud-firestore firebase-security-rules
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
add a comment |
When a user signs up and they initialise their data in firestore, I want to validate that they aren't attempting to set their role (i.e. so they're not setting it to 'admin' for example).
I tried to write this:
match /users/{userId} {
allow create: if (signedInAs(userId) && !request.resource.data.role) || isAdmin();
...
...but I just see "Property role is undefined on object."
Is there a way to do this safely? Or does this mean I should always be initialising expected fields, even if it's just to the empty string? That doesn't seem to quite fit with the philosophy of NoSQL?
firebase google-cloud-firestore firebase-security-rules
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
add a comment |
When a user signs up and they initialise their data in firestore, I want to validate that they aren't attempting to set their role (i.e. so they're not setting it to 'admin' for example).
I tried to write this:
match /users/{userId} {
allow create: if (signedInAs(userId) && !request.resource.data.role) || isAdmin();
...
...but I just see "Property role is undefined on object."
Is there a way to do this safely? Or does this mean I should always be initialising expected fields, even if it's just to the empty string? That doesn't seem to quite fit with the philosophy of NoSQL?
firebase google-cloud-firestore firebase-security-rules
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
When a user signs up and they initialise their data in firestore, I want to validate that they aren't attempting to set their role (i.e. so they're not setting it to 'admin' for example).
I tried to write this:
match /users/{userId} {
allow create: if (signedInAs(userId) && !request.resource.data.role) || isAdmin();
...
...but I just see "Property role is undefined on object."
Is there a way to do this safely? Or does this mean I should always be initialising expected fields, even if it's just to the empty string? That doesn't seem to quite fit with the philosophy of NoSQL?
firebase google-cloud-firestore firebase-security-rules
firebase google-cloud-firestore firebase-security-rules
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
edited Nov 24 '18 at 13:07
Joseph Humfrey
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
asked Nov 24 '18 at 13:02
Joseph HumfreyJoseph Humfrey
2,11411625
2,11411625
add a comment |
add a comment |
1 Answer
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votes
Use the in operator to find out if a property of an object doesn't exist.
!("role" in request.resource.data)
This yields a boolean. See it in the rules API docs for the Map type.
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
Perfect, thank you!
– Joseph Humfrey
Nov 24 '18 at 14:22
add a comment |
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1 Answer
1
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
Use the in operator to find out if a property of an object doesn't exist.
!("role" in request.resource.data)
This yields a boolean. See it in the rules API docs for the Map type.
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
Perfect, thank you!
– Joseph Humfrey
Nov 24 '18 at 14:22
add a comment |
Use the in operator to find out if a property of an object doesn't exist.
!("role" in request.resource.data)
This yields a boolean. See it in the rules API docs for the Map type.
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
Perfect, thank you!
– Joseph Humfrey
Nov 24 '18 at 14:22
add a comment |
Use the in operator to find out if a property of an object doesn't exist.
!("role" in request.resource.data)
This yields a boolean. See it in the rules API docs for the Map type.
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
Use the in operator to find out if a property of an object doesn't exist.
!("role" in request.resource.data)
This yields a boolean. See it in the rules API docs for the Map type.
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
answered Nov 24 '18 at 13:08
Doug StevensonDoug Stevenson
72.6k983104
72.6k983104
Perfect, thank you!
– Joseph Humfrey
Nov 24 '18 at 14:22
add a comment |
Perfect, thank you!
– Joseph Humfrey
Nov 24 '18 at 14:22
Perfect, thank you!
– Joseph Humfrey
Nov 24 '18 at 14:22
Perfect, thank you!
– Joseph Humfrey
Nov 24 '18 at 14:22
add a comment |
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