CODEWITHSUNDEEP
node.jsfirebasegoogle-cloud-firestoregoogle-cloud-functions
Prashin Jeevaganth
Prashin Jeevaganth

Reputation: 1353

Value for argument "documentPath" is not a valid resource path. Path must be a non-empty string

I want to write a cloud function that listens to whether a new document is created in the following subcollection of some document of users. However, the user document upon previous creation may not have a following subcollection.

In other words, I want a cloud that responds to db.collection(“users”).doc(“doc_id1”).collection(“following”).doc(“doc_id2”).set(new_document) , and I have written the cloud function to be

exports.create_friend_request_onCreate = functions.firestore
  .document("users/{user_id}/{following}/{following_id}")
  .onCreate(f2);

And implementation of f2 is written in some other file

exports.f2 = async function(snapshot) {
 //some code
}

However upon creation the document in the subcollection, I get the following error

Error: Value for argument "documentPath" is not a valid resource path. Path must be a non-empty string.

Can someone explain to me what is wrong here?

Upvotes: 12

Views: 26569

Answers (5)

Baris Senyerli
Baris Senyerli

Reputation: 920

You need to put them as string. Easiest way is format string.

Usage: ${your_any_type_value}

Caution: undefined or null will be show as "null" and "undefined".

 exports.create_friend_request_onCreate = functions.firestore
  .document(`users/${user_id}/${following}/${following_id}`)
  .onCreate(f2);

Upvotes: 1

Adrian
Adrian

Reputation: 253

This happened to me because in my Controller (of the API) I had something like this.

export const deleteUserGallery = async (req: Request, res: Response) => {
    const { user_id } = req.params

You need to change your req.params to req.body if that's the case, to something like this:

export const deleteUserGallery = async (req: Request, res: Response) => {
        const { user_id } = req.body

Upvotes: -1

mehmet ilhan
mehmet ilhan

Reputation: 151

I had a same problem and this reason of the problem is doc path must be a string. collection("questions").doc(21) is wrong. collection("questions").doc("21") is work.

-you have to make sure the variables are strings .You can use "users/{String(user_id)}/{following}/{String(following_id)}"

Upvotes: 15

Prashin Jeevaganth
Prashin Jeevaganth

Reputation: 1353

The correct path should have been 'users/{user_id}/following/{following_id}', apparently the double quotes cannot be used as paths.

Upvotes: 2

Peter Haddad
Peter Haddad

Reputation: 80924

Change this:

  .document("users/{user_id}/{following}/{following_id}")

into this:

  .document("users/{user_id}/following/{following_id}")

The collection shouldn't have a {wildcard}

Upvotes: 0

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