Array parameters

[Damon Silver]

I'm attempting to use array parameters a la http://guides.rubyonrails.org/action_controller_overview.html#hash-and-array-parameters, e.g., ?foo[]=bar&foo[]=baz, but can't seem to get Grape to play nicely with this.  Does Grape support this, and if so, what is the syntax to do so?  

The only reference I've found is http://stackoverflow.com/questions/18314017/testing-rails-grape-api-with-curl-params-array, but that doesn't demonstrate how to actually enable the desired behavior.

Thanks in advance,

Damon Silver

[Daniel Doubrovkine]

Grape definitely supports this.

I added this to a simple API:

    get '/array' do

      p params[:ary]

    end

curl "http://localhost:9292/api/array?ary\[\]=x&ary\[\]=y" 

this gave me an array with ["x", "y"]

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[Damon Silver]

How do you declare the parameters?  I was trying something like this and seeing errors:

params do

  requires 'foo[]', type: String, desc: 'something about foo'

end

If I simply declare the parameter as "requires :foo, ...", will Grape do the translation to an array of strings if I submit a query with multiple foo parameters?  That's what your example above seems to suggest.

Thanks.

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[Daniel Doubrovkine]

If `foo` is supposed to be an array, you should declare it as such, requires :foo, type: Array. Does that work?

[Damon Silver]

Working now.  Thanks for the help!

[Damon Silver]

P.S. When possible, it'd be nice to update the documentation to list the acceptable parameter types and provide examples for each.

[Daniel Doubrovkine]

Please do update the documentation! See https://github.com/intridea/grape/blob/master/CONTRIBUTING.md.