Using puts in rails

Question

I have this code in controller:

array = ["asd", "asd", "asd"]
    @print = array.each do |i|
       puts "Random text #{i}"
    end

And now I want to print it in some pages view like show.html.erb:

<%= @print >

And I get this: ["asd", "asd", "asd"] But In controller I sayd to puts each object in array, but it is not doing it?

Answer 1

The puts method is for printing a string to the console. If you wanted to set each of the values of the array to a certain value in order to print it out later, you should use #map.

array = ['asd', 'asd', 'asd']
@print = array.map { |i| "Random text #{i}" }

Now, in your corresponding view, you should add:

<% @print.each do |val| %>
  <%= val %>
<% end %>

Answer 2

puts prints to the stdout (standard output) that, in the majority of cases, corresponds to the console where you started the Rails server.

Check the console and you will find, in the middle of the request logs, also the result of the puts statement.

A better way to print out something from the console is to use the Rails logger, especially if you want such output to be logged in the logs in production.

Rails.logger.info "message"

Assuming it's just for debugging purpose, then it's fine to use puts (or p).