On Friday, August 7, 2015 at 7:42:19 AM UTC-7, Sylver wrote:
>
> Hello,
>
> I'd like to find a way to automagically extend data a model dataset
> returns with some related eager loaded table.
>
> I have a model as this (simplified) :
>
> class Foo < Sequel::Model
> many_to_one :bar, :select => [:id, :field1, :field2]
> end
>
>
> And I'd like to retrieve the data like this :
>
> foo_set = Foo.dataset.eager(:bar).all
> # => [{:id => 1, :bar => {:id => 32, :field1 => "value", :field2 =>
> "value"}}, ...]
>
>
That's not how eager loading works in Sequel. Eager loading prepopulates
associations, it doesn't add additional keys to the resulting value hashes.
Also, you would get model objects, not plain hashes:
The most similar thing to what you want is using the graph_each extension.
But that splits the hashes into subhashes per table, and will give you
something like:
[{:foos=>{:id=>1}, :bar=>{:id => 32, :field1 => "value", :field2 =>
"value"}]
I think the easiest way to get what you want would be to use eager, but
merge the associations into the values:
Foo.dataset.eager(:bar).all{|foo| foo.values.merge!(foo.associations)}
Thanks,
Jeremy
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