How to link 'belongs_to' and 'many' in MongoDB
2 models:

    # User Model:
    many :research_papers

and

    # ResearchPaper Model:
    key :user_id,  ObjectId
    key :username, String
    
    belongs_to :user


I want to link the research paper to the user.  I've got the :user_id and :username listed there ... 

Do I just insert those values myself?

Lastly how do I verify that I've created a correct link / association
How to link 'belongs_to' and 'many' in MongoDB
===

2 models:

    # User Model:
    many :research_papers

and

    # ResearchPaper Model:
    key :user_id,  ObjectId
    key :username, String
    
    belongs_to :user


I want to link the research paper to the user.  I've got the :user_id and :username listed there ... 

Do I just insert those values myself?

Lastly how do I verify that I've created a correct link / association