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Add Object#nonblank? to ActiveSupport.

Similar to Numeric#nonzero? -- returns itself if not blank (per +blank?+), 
otherwise returns false.
henrik (author)
Mon Apr 14 02:48:44 -0700 2008
commit  29d81796084e110e37ff8a0bbc2647147ccb0449
tree    7209ca59256859715a627308a5bec25c17a2dc0e
parent  420c4b3d8878156d04f45e47050ddc62ae00c68c
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activesupport/lib/active_support/core_ext/blank.rb 
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@@ -12,6 +12,19 @@
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   def blank?
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     respond_to?(:empty?) ? empty? : !self
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   end
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+  
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+  # Similar to Numeric#nonzero? -- returns itself if not blank (per +blank?+),
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+  # otherwise returns false. Simplifies e.g.
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+  #
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+  #   name = params[:name].blank? ? "Default name" : params[:name]
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+  #
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+  # to
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+  #
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+  #   name = params[:name].nonblank? || "Default name"
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+  def nonblank?
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+    !blank? && self
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+  end
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+
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 end
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 class NilClass #:nodoc:
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activesupport/test/core_ext/blank_test.rb 
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@@ -16,5 +16,12 @@
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     BLANK.each { |v| assert v.blank?, "#{v.inspect} should be blank" }
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     NOT.each   { |v| assert !v.blank?, "#{v.inspect} should not be blank" }
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   end
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+  
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+  def test_nonblank
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+    x = " ".nonblank? || "blank"
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+    assert_equal(x, "blank")
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+    x = "nonblank".nonblank? || "blank"
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+    assert_equal(x, "nonblank")
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+  end
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 end

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