CODEWITHSUNDEEP
rubysinatraerb
Joel
Joel

Reputation: 3176

How do I output a multidimensional hash in ERB files?

I need some help printing the values of my hash. In my "web.rb" file I have:

class Main < Sinatra::Base

    j = {}
    j['Cordovan Communication'] = {:title => 'UX Lead', :className => 'cordovan', :images => ['http://placehold.it/350x150','http://placehold.it/350x150','http://placehold.it/350x150']}
    j['Telia'] = {:title => 'Creative Director', :className => 'telia', :images => ['http://placehold.it/350x150','http://placehold.it/350x150','http://placehold.it/350x150','http://placehold.it/350x150']}


    get '/' do
        @jobs = j
        erb :welcome
    end
end

In "welcome.rb" I'm printing the values of the hash, but it doesn't work:

<% @jobs.each do |job| %>  
    <div class="row">
        <div class="span12">
            <h2><%=h job.title %></h2>
        </div>
    </div>
<% end %>

Here's my error message:

NoMethodError at / undefined method `title' for #<Array:0x10c144da0>

Upvotes: 0

Views: 5369

Answers (2)

Dave S.
Dave S.

Reputation: 6419

There's no automatic method creation for Ruby hashes, e.g., you can't call job.title, since there is no title method on Hash objects. Instead you can call job[:title].

Also note that @jobs is a hash, not an array, so you probably want to call @jobs.each_pair rather than @jobs.each. It's possible to use @jobs.each, but in this case it's not going to give you what you expect.

Upvotes: 2

Chowlett
Chowlett

Reputation: 46657

Think what @jobs looks like:

@jobs = {
  'Cordovan Communication' => {
    :title => 'UX Lead', 
    :className => 'cordovan',
    :images => ['http://placehold.it/350x150','http://placehold.it/350x150','http://placehold.it/350x150']},
  'Telia' => {
    :title => 'Creative Director',
    :className => 'telia',
    :images => ['http://placehold.it/350x150','http://placehold.it/350x150','http://placehold.it/350x150','http://placehold.it/350x150']}
}

Then remember that each called on a hash passes a key and a value to the block, and you'll see that you have:

@jobs.each do |name, details|
  # On first step, name = 'Cordovan Communication', details = {:title => 'UX Lead', ...}
end

So what you want is probably:

<% @jobs.each do |name, details| %>  
    <div class="row">
        <div class="span12">
            <h2><%=h details[:title] %></h2>
        </div>
    </div>
<% end %>

Upvotes: 7

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