mongodb - Remove embedded document in a nested array of documents -

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my schema looks this:

"content" : [         {             "_id" : objectid("4fc63de85b20fb72290000f8"),             "assets" : [                 {                     "path" : "temp/4f840af9565832fa14000002/4f840b1e565832fa14000007/4fc63de85b20fb72290000f7/content/i_understanding_and_measuring.pdf",                     "_id" : objectid("4fc63def5b20fb722900010e")                 },                 {                     "path" : "temp/4f840af9565832fa14000002/4f840b1e565832fa14000007/4fc63de85b20fb72290000f7/content/me.jpg",                     "_id" : objectid("4fc63e4d5b20fb722900015d")                 }             ],             "content" : "",             "name" : "downloads"         },         {             "_id" : objectid("4fc63dfd5b20fb722900012a"),             "assets" : [                 {                     "path" : "temp/4f840af9565832fa14000002/4f840b1e565832fa14000007/4fc63de85b20fb72290000f7/content/me.jpg",                     "_id" : objectid("4fc63e055b20fb7229000147")                 },                 {                     "path" : "temp/4f840af9565832fa14000002/4f840b1e565832fa14000007/4fc63de85b20fb72290000f7/content/thierry-henry-12-31-11-1.jpg",                     "_id" : objectid("4fc63e525b20fb7229000164")                 }             ],             "content" : "",             "name" : "bio"         }     ],

i can retrieve document with:

db.presentations.find({'content.assets._id': objectid('4fc63def5b20fb722900010e')})`

i've tried following remove document assets collection line below, no avail:

db.presentations.update(   {'content.assets._id': objectid('4fc63def5b20fb722900010e')},    {$pull: {'content.assets': {'_id': objectid('4fc63def5b20fb722900010e')}}} )

i'm trying remove item corresponding assets collection id. ideas?

you close! remember outermost "content" array itself. following 2 character change works, use content.$.assets inside value $pull.

db.presentations.update(   {'content.assets._id': objectid('4fc63def5b20fb722900010e')},    {$pull: {'content.$.assets': {'_id': objectid('4fc63def5b20fb722900010e')}}} )

zoom ahead.


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