Mongoose: ObjectId Comparisons fail inconsistently

Question

I have a straightforward tool for building collections of documents and then automatically formatting them for EPUB or LaTeX rendering, written on top of ExpressJS. I\'m us

Answer 1

A straight == (or ===) comparison will compare the two objects by reference, not value. So that will only evaluate to true if they both reference the very same instance.

Instead, you should be using the equals method of ObjectID to compare their values:

story._id.equals(offref.ref)

As @bendytree notes in the comments, if either value could be null (and you want nulls to compare as equal), then you can use the following instead:

String(story._id) === String(offref.ref)