Rails: Find within the first 10?

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I'm using nokogiri to screenscapre contents of a websites.

I set fetch_number to specify the number of divs that I want to retrieve. For example, I may want the first(10) tweets from the target page.

Code looks like this:

doc.css(".tweet").first(fetch_number).each do |item|
  title = item.css("a")[0]['title']
end

However, when there is less than 10 match div returned, it will reports NoMethodError: undefined method 'css' for nil:NilClass. This is because when no match html found, it will return nil.

How can I make it return the all available data within 10? I don't need the nils.

asked 24 secs ago

cqcn1991

451

Rails: Find within the first 10?