CODEWITHSUNDEEP
rubyvariables
pkberlin
pkberlin

Reputation: 852

Variables in Ruby

i would play a bit with Ruby.

Now i have a little problem, which i cannot solve.

The code:

@href = "http://localhost:3000"

def link(title, href)

  if href.nil?
    href = @href
  else
    href = href
  end

  output = "<a href=\"#{href}\">"
  output << "#{title}"
  output << "</a>"

  puts output

end

alias link_to link

link_to("Google","")

Whats the problem in my code? I want set a default value for the href,if it is nil.

Greets,

Peter

Upvotes: 0

Views: 87

Answers (3)

Mori
Mori

Reputation: 27779

Here's a cleaner way to set the default:

def link(title, href = 'http://localhost:3000')
   # ...
end

Upvotes: 2

Jan
Jan

Reputation: 6828

"" != nil

[10] pry(main)> link "xxx",nil
<a href="http://localhost:3000">xxx</a>
=> nil

Upvotes: 1

farnoy
farnoy

Reputation: 7766

The problem is here

>> "".nil?
=> false

You should use .nil? or .empty? as the condition.

>> "".empty?
=> true

Upvotes: 1

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