Is there a way to declare attributes using Ruby code in a rabl template?

[Florent2]

Hi,

In a particular rabl view, I want to declare all the attributes of a model. I tried

attributes MyModel.column_names.map(&:to_sym)

but I get ActionView::Template::Error error:

[:id, :attr1, :attr2, ..., :attrn, :created_at, :updated_at] is not a symbol

Is it possible with rabl to not have to manually list the model attributes?

Thanks :)

[nesquena]

How about (notice the splat argument)

attributes *MyModel.column_names.map(&:to_sym)

or

MyModel.column_names.map(&:to_sym).each { |a| attribute a }

[Florent2]

Thanks Nathan! The splat argument is the solution.

[spilth]

Any chance this kind of functionality would be pushed into RABL? Such as an all_attributes method?

[nesquena]

But RABL is not tied to an ORM or any object expectation. So what would all_attributes do that would work across all objects? I would recommend just creating your own helper and using that.

[spilth]

Ah, right. My mistake for only thinking in the context of Rails.

[drewB]

Just for the record the map(&:to_sym) is not necessary. *MyModel.column_names works just fine.