Does DataMapper provide a convenient way to create a new record when none exists or update an existing one? I couldn't find anything in the API documentation.
This is what I have at the moment which doesn't seem very elegant:
foo = Foo.get(id)
if foo.nil?
foo = Foo.create(#attributes...)
else
foo.update(#attributes...)
end
foo.save
Foo.first_or_create(:id=>id).update(attributes)
or
(Foo.get(id) || Foo.new).update(attributes)
I just try
Foo.first_or_create(:id=>id).update(attributes)
but it gets wrong sometimes, so I find some tips from here:DataMapper Docs
Now I make my code works like:
Foo.first_or_create({:id=>id}, {:name => name}).update(:id => id, :name => name)
Hope it helps you.
