How to merge an array of arrays together into a single array?

Question

I have the following array

[["convertible", "2010", "red"], ["convertible", "2010", "green"]]

How do I merge the above array into this, in either in Rails or in Ruby?

["convertible", "2010", "red", "convertible", "2010", "green"]

Edit-1

@category.each do |content|
      form_chain = JSON.parse(content.content)
      chained_array << form_chain.values
    end

    chained_array

This gives the output

[["convertible", "2010", "red"], ["convertible", "2010", "green"]]

If I use chained_array.flatten! it gives the same result.

Alex.Bullard · Accepted Answer · 2013-10-30 17:08:51Z

3

[["convertible", "2010", "red"], ["convertible", "2010", "green"]].flatten!

answered Oct 30, 2013 at 17:08

Alex.Bullard

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2 Comments

It is working in my console but why it is not working in my rails application

got it some cache problem i cleared rake tmp:clear now working

hirolau · Accepted Answer · 2013-10-30 17:24:35Z

0

Based on your edit you could just create a flat array from the beginning:

@category.each do |content|
      form_chain = JSON.parse(content.content)
      chained_array.push(*form_chain.values)
end

answered Oct 30, 2013 at 17:24

hirolau

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