sequence.withFields([selector1, selector2...]) → stream array.withFields([selector1, selector2...]) → array
Plucks one or more attributes from a sequence of objects, filtering out any objects in the sequence that do not have the specified fields. Functionally, this is identical to hasFields followed by pluck on a sequence.
Example: Get a list of users and their posts, excluding any users who have not made any posts.
Existing table structure:
[
{ "id": 1, "user": "bob", "email": "[email protected]", "posts": [ 1, 4, 5 ] },
{ "id": 2, "user": "george", "email": "[email protected]" },
{ "id": 3, "user": "jane", "email": "[email protected]", "posts": [ 2, 3, 6 ] }
]
Command and output:
r.table("users").withFields("id", "user", "posts").run(conn);
// Result passed to callback
[
{ "id": 1, "user": "bob", "posts": [ 1, 4, 5 ] },
{ "id": 3, "user": "jane", "posts": [ 2, 3, 6 ] }
]
Example: Use the nested field syntax to get a list of users with cell phone numbers in their contacts.
r.table("users").withFields("id", "user",
r.hashMap("contact", r.hashMap("phone", "work"))
).run(conn);
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