http://railstips.org/2009/6/27/mongomapper-the-rad-mongo-wrapper
Looks really sweet :) Here is an extract:
Looks pretty similar to the Hobo fields syntax in the model, except no
migrations are needed. Simplicity rules!!!
...
Embedded Documents
So the cool thing about Mongo is that you can embed documents in other
documents. Let’s say our person has multiple addresses. To handle
that, we would create an embedded address document to go along with
our person document.
class Address
include MongoMapper::EmbeddedDocument
key :address, String
key :city, String
key :state, String
key :zip, Integer
end
class Person
include MongoMapper::Document
many :addresses
end
Now we can add addresses to the person like so:
person = Person.new
person.addresses << Address.new(:city => 'South Bend', :state => 'IN')
person.addresses << Address.new(:city => 'Chicago', :state => 'IL')
person.save
Doing this actually saves the address right inside the person
document. Yep, no joins. Yay! Cheers resound from the heavens! You can
even query for documents based on these embedded documents. For
example, if you wanted to find all people that are in the city
Chicago, you could do this:
Person.all(:conditions => {'addresses.city' => 'Chicago'})
--
You received this message because you are subscribed to the Google Groups "Hobo
Users" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/hobousers?hl=en.
