Text Search
MongoDB provides text indexes </core/index-text/>
to support text search queries on string content. Text indexes
can include any field whose value is a string or an array of
string elements.
MongoDB Atlas also provides Atlas Search which is a more powerful and flexible text search solution. The rest of this page discusses text indexes and not Atlas Search.
To perform a text search with the Ruby driver, first create a text
index with indexes.create_one(). The following command creates a
text index on the name field of the restaurants collection in
the test database.
client = Mongo::Client.new([ '127.0.0.1:27017' ], :database => 'test')
client['restaurants'].indexes.create_one( { :name => 'text' } )Once the text index is created you can use it as part of a query. The
following code finds all documents in the restaurants collection
which contain the word garden, without case sensitivity.
client = Mongo::Client.new([ '127.0.0.1:27017' ], :database => 'test')
client[:restaurants].find(
{ '$text' =>
{ '$search' => 'garden', '$caseSensitive' => false }
}
).each do |document|
#=> Yields a BSON::Document.
end