mongo_mapper or mongoid with rails4

Question

The ORM mongo_mapper and mongoid both support ruby on rails. However, after reading their documents I still cannot make a decision which one to use to develop a new application with rails4.

Any suggestion?

Spiceberry

https://mcmap.net/q/257607/-mongoid-or-mongomapper-closed – Reverse

It was answered in rails3 age. So do they still apply to rails4? – Spiceberry

Answer 1

I have used MongoMapper but decided to migrate to MongoId. both of them are great MongoDB Libraries for Ruby, but after reading a lot about the difference, I ended up using mongoid because of this.

You can find some differences between those MongoDB Libraries here, and decide which of them is more suitable to your requirments:

• Mongoid or MongoMapper?
• Mongoid vs MongoMapper: Two Great MongoDB Libraries for Ruby
• Mongoid or MongoMapper — the verdict

Baculiform

did you have any issues switching? we're thinking about switching too and would love any advice. – Diskin

Yes,sure.. Do you want me to send you a document, with all the issues switching? – Baculiform

we ran into a "TypeError: can't convert nil into String" error after converting ... did you see this? – Diskin

never mind, we fixed this, but did you have an issue converting _id to id in mongoid? "id" is equivalent to "_id" in MM, but it doesn't work that way for mongoid it appears. did you get a chance to send any tips btw? thanks! – Diskin

Yes... That is one of the problems that we also had. I'm writing the doc for you now.. – Baculiform

cool, thanks! perhaps post as an answer, and we can credit you? i hope you found a solution for this because it's killing us right now. may have to stick with MM. :( – Diskin

Why are you need to convert _id to id? record.id is the same as record._id in mongoid. I had a problem with it just because another service is using the db data as json, so I had to return id instead, or to change all my service code to _id. – Baculiform

yup, same thing as you ... other code relying on .id in the object JSON. – Diskin

we found a good solution to the problem: #6892544. please include this in your answer then we can give you the points. – Diskin

I posted it as an answer to your question. https://mcmap.net/q/1137946/-advice-on-migrating-from-mongomapper-to-mongoid. I will update it if I would remember more things... – Baculiform

I am thinking that in the most simple cases, you won't need either. This works for me: github.com/mongodb/mongo-ruby-driver – Wendolyn

I too used MongoMapper quite a bit, and decided to start using Mongoid instead. – Outlive