[Rails] Rails3: Arel finder discovery!

Rail3 Arel finders are just great, but you can't find a lot of example
on how powerful they really are.

I made a discovery, just experimenting with some chaining.

List say you have
Foo has may Bars

@foo = Foo.find(1)

@bar = @foo.bars

That would give you all the bars related to foo(1)

But you can also do:

@bar = @foo.bars.order(:name).where(:elem => "something")

I guess it is like scopes, just not defined in the model.

I don't know if that was possible in rails2 (e.g., @bar
@foo.bars.find(:conditions => "xxx"))

Not sure I have a use for it, but it was interesting that you can
filter a nested has_many relationship.

Steve Alex

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