CODEWITHSUNDEEP
ruby-on-railsruby
Archonic
Archonic

Reputation: 5382

Rails: Retrieve value from hash in array

There's a good number of related questions but their answers haven't helped me. I have a method fetch_all_sections which populates an array with this line:

all_sections << {:id => section.id, :sortlabel => section.sortlabel, :title => section.title, :depth => depth}

In a loop in a view, I would like to easily access the values by their key, like this:

<% fetch_all_sections(@standard).each do |section| %>
  <%= section.id %>
<% end %>

This says no method id on section. section[:id] and #{section['id']} have similarly themed errors. I used a hash for ease of retrieval - should I use a different structure?

I'm hoping I don't need .map like section.map { |id| id[:id] } for every value.

EDIT: Here's the context. It's a little loopy (pun intended) but it does what's intended.

# Calls itself for each section recursively to fetch all possible children
def fetch_all_sections(standard, section = nil, depth = 0)
  all_sections = []

  if section.nil?
    rootsections = standard.sections.sorted
    if ! rootsections.nil?
      rootsections.each_with_index do |section, i|
        depth = section.sortlabel.split('.').length - 1
        all_sections.push(fetch_all_sections(standard, section, depth))
      end
    end
  else

    all_sections << {:id => section.id, :sortlabel => section.sortlabel, :title => section.title, :depth => depth}

    section.children.sorted.each do |section|
      all_sections | fetch_all_sections(standard, section)
    end
  end

  return all_sections
end

Upvotes: 0

Views: 138

Answers (1)

MrYoshiji
MrYoshiji

Reputation: 54902

Try with the following:

<% fetch_all_sections(@standard).each do |section| %>
  <%= section['id'] %>
<% end %>

If not working, try debugging using these methods:

<% fetch_all_sections(@standard).each do |section| %>
  <%= section.inspect %>
  <%= section.class %>
<% end %>

As the Question author said, this fixed:

all_sections << fetch_all_sections(standard, section, depth).first

And tell us the output of the inspect

Upvotes: 1

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