I am building a simple messaging system, and i have a collection in mongodb with documents like this:
{ "_id" : ObjectId("50ad003f9811e5bc5c000000"), "between" : [ "user1,user2,user3" ] }
I want to perform this query:
db.conversations.find({'between': ["user1,user2,user3"]});
to get this exact document back. This query works in mongo shell.
in php-mongo, i tried this:
$collection->find(array("between"=>array("user1", "user2", "user3")));
but it does not work.
What am i doing wrong ?
Wouldn't you want to do an In query here?
db.collection.find( { "between" : { $in : ["user1", "user2", "user3"] } } );
See In query here: Mongo Advanced $in query
making your PHP query look like:
$collection->find(array("between"=>array("$in"=>array("user1", "user2", "user3"))));
//untested, should be something similar to this.
or if you're trying to find it exactly wouldn't you just be able to do:
$collection->find(array("between"=>array("user1,user2,user3")));
Have you tried:
$collection->find(array("between"=>"user1,user2,user3"));
or
$collection->find(array( "$elemMatch" => array( "between"=>"user1,user2,user3" ));
First of all when you are saving your data you have to use array not a string
{ "between" : [ "user1,user2,user3" ] }
this stores in "between" an array of one element "user1,user2,user3"
Basically when you do your query in shell everything is ok, because you are asking for a array with one element. But in php you are asking for an array of three elements.
So, when you save your data, most probably that is what you need :
{ "between" : [ "user1","user2","user3" ] }
and this will give you an array of three users.
Then read the documentation http://www.mongodb.org/display/DOCS/Advanced+Queries to and adjust your query depends on what you need: either the exact array or only some elements in the array
The $in operator is analogous to the SQL IN modifier, allowing you to specify an array of possible matches.
Consider the following example which uses the $or operator.
$collection->find([
'select' => ['$in' => ['option 1', 'option 2', 'option 3']]
]);