Question

I would like some help in order to prepare my data gathered from the database for charting.
I have a Browser model where I store all the data.

From each model I want to select the name attribute, I will put a color according an integer attribute in the model (for example if integer is 1, color => “#4572A7”) and the y attribute from the model.

Can someone provide an example of the most efficient way to achieve this data format?

Final format of the data:

            [
              {
                 :name=> 'Firefox',
                 :y=> 1,
                 :color => "#4572A7"
              },
              {
                 :name=> 'IE',
                 :y=> 1,
                 :color => "#AA4643"
              },
              {
                 :name=> 'Chrome',
                 :y=> 1,
                 :color => "#89A54E"
              },
              {
                 :name=> 'Safari',
                 :y=> 1,
                 :color => "#80699B"
              },
              {
                 :name=> 'Opera',
                 :y=> 1,
                 :color => "#3D96AE"
              },
              {
                 :name=> 'Others',
                 :y=> 1,
                 :color => "#DB843D"
              }
           ]

Answer 1

You could have a method that does the number-to-color translation and have something like

@browsers.to_json(methods: [:the_method_that_translates_numbers_to_colors], only: [:name, :y])

Hope that helps,

NHI