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Update part4d.md #3674

Closed AhmedLebda closed 1 month ago

AhmedLebda commented 1 month ago

The user returned after db query await user.findOne({username} shouldn't return _id because we used the json method on user schema to return id instead of _id, so all lines that used user._id are updated to user.id

AhmedLebda commented 1 month ago

await user.findOne({username} returns a query object which in fact contains _id it will only return id if we invoked the .toJSON() method on it

sorry for my mistake.