sequence.with_fields([selector1, selector2...]) → stream array.with_fields([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 has_fields 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').with_fields('id', 'user', 'posts').run(conn)
[
{ :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').with_fields('id', 'user', {:contact => {:phone => 'work'}).run(conn)
Couldn't find what you were looking for?
© RethinkDB contributors
Licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License.
https://rethinkdb.com/api/ruby/with_fields/