Triple Nested Array MongoDB Query - mysql

Question

I'd like to find the correct query to return all Boards within the Boards collection where the member id matches 1. Any takers?
My schema as follows:
Within the 'Boards' collection,
{ name: 'Board One',
teams: [
{ name: 'Team One',
members: [
{ id: '1', name: 'Garrett' },
{ id: '2', name: 'Sarah' }
]
},
{ name: 'Team Two',
members: [
{ id: '1', name: 'Garrett' },
{ id: '2', name: 'Jeff' }
]
}
]
},`{ name: 'Board Two',
teams: [
{ name: 'Team One',
members: [
{ id: '1', name: 'Garrett' },
{ id: '2', name: 'Sarah' }
]
},
{ name: 'Team Three',
members: [
{ id: '1', name: 'Jim' },
{ id: '2', name: 'Samson' }
]
}
]
I'm trying to query a object within an array, within array of objects, within a collection. I've tried many variations on the following query..
Boards.find({
'teams': {
$elemMatch: {
'members' : {
$elemMatch :
{
'id' : Meteor.userId()
}
}
}
}
})
I'd like to find the correct query to return all Boards within the Boards collection where the member id matches 1.

Answer 1

Could this be because you are storing id as string in the collection? As you will see below I tried your query replacing Meteor.userId() with a hardcoded string value (with single or double quotes) like '1' or '3' and I believe the query output is what you are looking for.
> db.boards.find().pretty()
{
"_id" : ObjectId("567443e7fba7a186bcd48bfd"),
"name" : "Board One",
"teams" : [
{
"name" : "Team One",
"members" : [
{
"id" : "1",
"name" : "Garrett"
},
{
"id" : "2",
"name" : "Sarah"
}
]
},
{
"name" : "Team Two",
"members" : [
{
"id" : "1",
"name" : "Garrett"
},
{
"id" : "2",
"name" : "Jeff"
}
]
}
]
}
{
"_id" : ObjectId("5674441ffba7a186bcd48bfe"),
"name" : "Board Two",
"teams" : [
{
"name" : "Team One",
"members" : [
{
"id" : "1",
"name" : "Garrett"
},
{
"id" : "2",
"name" : "Sarah"
}
]
},
{
"name" : "Team Three",
"members" : [
{
"id" : "1",
"name" : "Jim"
},
{
"id" : "2",
"name" : "Samson"
}
]
}
]
}
>
> db.boards.find({
... 'teams': {
... $elemMatch: {
... 'members' : {
... $elemMatch :
... {
... 'id' : '1'
... }
... }
... }
... }
... })
{ "_id" : ObjectId("567443e7fba7a186bcd48bfd"), "name" : "Board One", "teams" : [ { "name" : "Team One", "members" : [ { "id" : "1", "name" : "Garrett" }, { "id" : "2", "name" : "Sarah" } ] }, { "name" : "Team Two", "members" : [ { "id" : "1", "name" : "Garrett" }, { "id" : "2", "name" : "Jeff" } ] } ] }
{ "_id" : ObjectId("5674441ffba7a186bcd48bfe"), "name" : "Board Two", "teams" : [ { "name" : "Team One", "members" : [ { "id" : "1", "name" : "Garrett" }, { "id" : "2", "name" : "Sarah" } ] }, { "name" : "Team Three", "members" : [ { "id" : "1", "name" : "Jim" }, { "id" : "2", "name" : "Samson" } ] } ] }
>
>
> db.boards.find({
... 'teams': {
... $elemMatch: {
... 'members' : {
... $elemMatch :
... {
... 'id' : '3'
... }
... }
... }
... }
... })
>
>