Iterate over Array of Objects and Return Attributes

Question

I am trying to return a list of titles of objects in Rails, however I keep getting the entire object returned instead of the title attribute.

loe is the object which has an attribute which is a list of articles (named article), each article is itself an object with an attribute called title.

<%= loe.article.each { |x| print x.title } %>

is how I am currently attempting to do the iteration, but this returns the entire list of articles.

Answer 1

Use Array#map to invoke the title method on each and create a new array with the results:

loe.article.map(&:title)

The above is shorthand for

loe.article.map{ |o| o.title }

Answer 2

Using the ERB tag like '<%= ' means that you're asking ERB to display the result of that expression (above and beyond the fact that you're calling print inside the block). And a call to an Enumerable method like each will return the original array, which is what you're seeing.

Change the tag to <% (remove the =) and you should be good to go.