I have:
@layout = [:maincol => ['a'], :sidecol => []]
then I want to loop and get:
<div class="maincol"><div class="a"></a></div>
<div class="sidecol"></div>
How do I do it?
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Gareth and Totty must be a two-headed giant because how on earth would he know that was the output Totty was looking for?aarona– aarona2010-05-09 22:48:21 +00:00Commented May 9, 2010 at 22:48
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@DJTripleThreat: The original was stackoverflow.com/revisions/…Brian McKenna– Brian McKenna2010-05-09 22:56:20 +00:00Commented May 9, 2010 at 22:56
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Totty had asked the complete question but had forgot to indent to cause the <pre> effect to kick-in. See the raw version of the first rev.Larry K– Larry K2010-05-09 22:58:40 +00:00Commented May 9, 2010 at 22:58
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4 Answers
First of all, this is a ruby question not ruby-on-rails. Secondly there are a few naming conventions in Rails and @layout would certainly confuse other programmers as well as :maincol and :sidecol is a rather bad naming and they should be what ever the model behind is.
<div class="maincol"><% @layout[:maincol].each do |element| %>
<%= "<div class="%s"></div>" % element %>
<% end %></div>
<div class="sidecol"></div>
Comments
<% @layout.each |column| %>
<%= column.each |outer,inner| %>
<%= content_tag(:div, inner.empty? ? {} : content_tag(:div, {}, :class=>inner), class => outer) %>
<% end %>
<% end %>
Assuming that you actually wanted a div tag in the inner loop, and the </a> in the question is a typo.
Comments
Here's a quick way:
@layout = [{:maincol => ['a']}, {:sidecol => []}] # I'm assuming this was the explicit data structure you meant
html = @layout.map do |s|
s.map do |k,v|
contents = (v.map{|ss| content_tag('div', '', :class => ss)} unless v.empty?) || ''
content_tag('div', contents, :class => k)
end
end.join('')
I think you should try a different arrangement for your @layout variable, if you want a tag inside another tag, what you really want to use is a recursive data structure.
Comments
http://ruby-doc.org/core/classes/Array.html
Check "each" method...
