seo helpers module

seo_helper.rb

module SeoHelper
  def meta_keywords(keywords)
    tag(:meta, { :name => "keywords", :content => keywords })
  end
  
  def meta_description(description)
    tag(:meta, { :name => "description", :content => description })
  end
  
  def meta_author(author_name)
    tag(:meta, { :name => "author", :content => author_name })
  end

  def meta_noindex
    tag(:meta, { :name => "robots", :content => "noindex" })    
  end

  def comma_separated_keywords(array, keyword_attr = :name)
    keyword_attr.to_sym if keyword_attr.is_a?(String)
    array.map(&keyword_attr).join(', ') if array.is_a?(Array)
  end

end

# something like this in the layout:
  # -content_for :seo_tags do
  #   =meta_description "This the meta description for a specific page."
  #   =meta_keywords "keyword, keyword, keyword, keyword, keyword, keyword"
  
# and in the layout:
  # =yield :seo_tags

# tests
describe SeoHelper do
  include SeoHelper

  it "should return a meta description tag" do
    description = "This is a sample meta description."
    meta_description(description).should == '<meta content="This is a sample meta description." name="description" />'
  end

  it "should return a meta keyword tag" do
    keywords = "keyword one, keyword two, keyword three"
    meta_keywords(keywords).should == '<meta content="keyword one, keyword two, keyword three" name="keywords" />'
  end

  it "should return a meta author tag" do
    author = "John Smith"
    meta_author(author).should == '<meta content="John Smith" name="author" />'
  end

  it "should return a meta noindex tag" do
    meta_noindex.should == '<meta content="noindex" name="robots" />'
  end

  it "should recieve a collection of objects return a comma separated list of keywords" do
    tags = [
      Factory.create(:tag, :name => "Lions"),
      Factory.create(:tag, :name => "Tigers"),
      Factory.create(:tag, :name => "Bears")      
    ]
    news_item = Factory.create(:news_item, :tags => tags)
    comma_separated_keywords(news_item.tags).should === "Lions, Tigers, Bears"
  end

end