Rails using variable name as key for json array

Question

In Rails I'm rendering a json array, but I need one of the keys to have a variable name depending on the params. something like this:

render json: {
        key1: values,
        params[:type]: more_values,
        labels: some_lables
      }

obviously this doesn't work, but what will?

Arup Rakshit · Accepted Answer · 2015-05-26 16:38:12Z

8

Use interpolation :

render json: {
        :key1 => values,
        :"#{params[:type]}" => more_values,
        labels: some_lables
      }

answered May 26, 2015 at 16:26

Arup Rakshit

119k30 gold badges270 silver badges328 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

San · Accepted Answer · 2015-05-27 14:30:23Z

2

Make a hash and render it as JSON.

h = { key1: values, labels: some_labels }
h[params[:type]] = more_values
render json: h.to_json

answered May 26, 2015 at 16:30

San

1,9541 gold badge14 silver badges18 bronze badges

They are both essentially the same thing, but whatever works for you is perfectly fine.