Mongo-Style Selectors
The simplest selectors are just a string or Mongo.ObjectID
. These selectors match the document with that value in its _id
field.
A slightly more complex form of selector is an object containing a set of keys that must match in a document:
1 2 3 4 5 6 7 8 | // Matches all documents where deleted is false {deleted: false } // Matches all documents where the name and cognomen are as given {name: "Rhialto" , cognomen: "the Marvelous" } // Matches every document {} |
But they can also contain more complicated tests:
1 2 3 4 5 6 7 8 | // Matches documents where age is greater than 18 {age: {$gt: 18}} // Also matches documents where tags is an array containing "popular" {tags: "popular" } // Matches documents where fruit is one of three possibilities {fruit: {$ in : [ "peach" , "plum" , "pear" ]}} |
See the complete documentation.
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