Module: Halbuilder::Embed

Defined in:
lib/halbuilder/embed.rb

Instance Method Summary collapse

Instance Method Details

#hal_embed!(rel, *args, &block) ⇒ Object 



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# File 'lib/halbuilder/embed.rb', line 4

def hal_embed!(rel, *args, &block)
  collection = :not_provided
  opts = {}

  # first arg may optionally be an iterable collection
  if args.count > 1
    collection = args[0]
    opts = args[1]
  elsif args[0].is_a?(Hash)
    # NOTE: we don't allow passing a _non_ options hash as the only argument
    opts = args[0]
  elsif args.length > 0
    collection = args[0]
  end

  # check if we're zooming before rendering anything
  if hal_zoomed?(rel, opts[:zoom])
    set! Halbuilder.configuration.embed_key do
      set! rel do
        # only load collection from proc after deciding to zoom
        collection = collection.call if collection.is_a?(Proc)

        # iterate block, or render explicit nulls
        if collection.respond_to?(:each) && !collection.is_a?(Hash)
          array! collection do |c|
            block.call(c)
          end
        elsif collection.present? || collection == :not_provided
          block.call(collection)
        else
          null!
        end
      end
    end
  end
end