Tips for verifying the presence of a Firestore Document reference within a JavaScript array of Document references

I am currently dealing with a document that contains an array field storing references to other documents.

Upon fetching the document data and verifying if a document reference exists within the array, I consistently receive a result indicating that it is not present in the array, even when it actually is.

//The following code snippet returns 'false'

console.log([db.doc('collectionName/docId')].includes(db.doc('collectionName/docId')))

console.log(db.doc('collectionName/docId') === db.doc('collectionName/docId'))

It seems like each document reference has its own unique characteristic. In light of this, how can I determine whether a specific document reference exists within an array of document references?

javascriptarraysfirebasegoogle-cloud-firestore

Answer №1

After a challenging experience, I discovered that JavaScript objects are compared based on references rather than their actual contents 😅. Because the document reference objects were not identical, I needed to compare the IDs of the document objects in order to determine if they matched.

Using this code snippet will result in true:

console.log([db.doc('/collectionName/docId')]
.some(doc => doc.id === db.doc('/collectionName/docId').id));

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