javascript - How to Query two tables together in MongoDB with both columns present? -

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i met stumbling block while doing join statement mongo db. have 2 different tables show below

  1. user table (_id, username)
  2. message table (user_id)

i trying fetch messages alongside username of user posted message.

output

{   "msg":[     {       "_id":"599a2ca773905b2787cb91c8",       "user_id":"5997da7868f45f39206f703d",       "topic_id":0,"message":"hello black_man",       "datecreated":"2017-08-21t00:43:19.000z",       "__v":0,       "user_messages":[]     },   ] }

it not seems have values inside user_message believe should contact corresponding user details.

please kindly this.

thanks...





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