PHP/MongoDB: finding a nested object

Question

I am using the MongoDB driver for PHP and I need to find some nested elements. My structure looks like this:

 proce : { "type" : "cars" , "grupo" : { "_id" : "4e8478ace4b0dea06288ad63"}}

I need to get to the _id = 4e8478ace4b0dea06288ad63

I tried something like

$db->find( array( 'grupo._id' => "4e8478ace4b0dea06288ad63" ) );

but nothing happens.. thanks for your help

Gates VP · Accepted Answer · 2012-02-17 19:42:46Z

2

Your basic query looks correct.

However, that grupo._id looks like an ObjectId. Your query is attempting to match a string. Is that "4e84..." number a string or an ObjectId?

You may need to use the PHP MongoId for matching.

answered Feb 17, 2012 at 19:42

Gates VP

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1 Comment

Thank you very much, that was all to making it run =D