fix(author): fail on create due to functions as enumerable properties overridden in Object.assign #3600
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SVG tester:Number of differences (default views): 0 Edited: 2024-05-17 12:24:35 UTC |
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ikesau
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May 16, 2024
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Can confirm this allows author pages to be published and baked. Other page types (topic pages/homepage) get baked correctly, too.
Also made a gist to confirm the explanation in the comments: https://gist.github.com/ikesau/9271c5574f787a8e7457e3956cda6e04
db/model/Gdoc/GdocFactory.ts
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| // enrichments are not present on the Gdoc subclass when loading from the DB | ||
| // (GdocsContentSource.Internal), since subclass enrichements are only done | ||
| // while fetching the live gdocs (GdocsContentSource.Gdocs) in | ||
| // loadFromGdocBase(). |
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For reference, here is the presentation given on this topic yesterday during tech tea: Where.do.carrots.grow.mp4 |
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alternate solution to #3578, which had to be reverted because this.content in GdocPost would be honored by _.defaults as a property not to override, but would result in the
contentproperty not respectingOwidGdocContentat run time.What changed?
This PR promotes GdocBase instance-level functions (e.g.
_enrichSubclassContentas class methods.Why make this change?
GdocAuthor (but also GdocPost, GdocHomepage and Gdoc DataInsight) are created from a GdocBase instance (only when inserting a new Gdoc) using
Object.assign(gdocAuthor, gdocBase). This call lists all enumerable properties on GdocBase, including instance-level functions such as_enrichSubclassContent, and overrides the subclass version.This leads to the subclass enrichment not being performed, and in the case of author creation, an error.
Follow-up
Promoting instance-level functions to class methods on
GdocBaseis enough to solve this issue, but we should consider whether to apply the same treatment to the GdocBase subclasses too.