Can't find documents searching by ObjectId using Mongoose

Question

  Campaign.find {client_id:req.param('client_id')}, (error, campaigns) ->     if error       response =         error: error.message     else       for campaign in campaigns         query =           campaign_id: campaign._id         console.log query         CampaignResponse.find query, (err, campaignResponsesCount) ->           console.log campaignResponsesCount        response = campaigns      res.json response 

For some reason, this returns no results. However, there are items in CampaignResponse with that specific campaign._id. I'm pretty sure this is an issue with types and casting, but I can't figure out what to do.

Any help?

Answer 1

A couple tips:

• Try running the same query from mongodb at the command line, see if you get any results.
• Is the "campaign_id" defined as an ObjectId in your schema? If so, try searching using the ObjectId type.

For example:

var ObjectId = require('mongoose').Types.ObjectId;  var query = { campaign_id: new ObjectId(campaign._id) };