MongoStore::Session is not deserialized correctly

[kliput]

Hello,

I try to use mongo_session_store with MongoStore. For some reasons, we are stuck with ruby mongo 1.12 driver, so lastest working version of mongo_session_store is 5.1 (6.0 does not want to work with 1.12).

I've noticed that with every request, new document in database is created. Analysing code I saw these lines:

        def self.load(options = {})
          options[:data] = options["data"] if options["data"]
          new(options)
        end

Document fetched from database with e.g. ActionDispatch::Session::MongoStore::Session.collection.find.first is: {"_id"=>"lsn4t6544ngQjAEgofn-dHlMytA", "data"=><BSON::Binary:70311184564240>, "created_at"=>2015-08-18 13:09:19 UTC, "updated_at"=>2015-08-18 13:09:19 UTC}

but using ActionDispatch::Session::MongoStore::Session.where.first, a Session instance is in form:

#<ActionDispatch::Session::MongoStore::Session:0x007fe536bc4238 @_id=nil, @data=<BSON::Binary:70311183800340>, @created_at=nil, @updated_at=nil>

Isn't it a bug, that self.load method sets only options[:data] field, ignoring _id, created_and and updated_at (whose are Strings not Symbols)?

I think it causes that Sessions can't be deleted, e.g.:

2.1.4 :096 > ActionDispatch::Session::MongoStore::Session.where.collect &:_id
 => [nil, nil, nil, nil, nil] 
2.1.4 :107 > ActionDispatch::Session::MongoStore::Session.where.collect &:destroy
 => [{"ok"=>1, "n"=>0}, {"ok"=>1, "n"=>0}, {"ok"=>1, "n"=>0}, {"ok"=>1, "n"=>0}, {"ok"=>1, "n"=>0}]

Mongo session store version 6.0 has the same code for self.load.

Best regards,
Jakub Liput

[brianhempel]

Is this only an issue with the older Mongo driver?

[brianhempel]

I can't reproduce this on my (admittedly newer) setup.