Class: TopHat::TwitterCardHelper::TwitterCardGenerator

Inherits:
Object
  • Object
show all
Includes:
ActionView::Helpers
Defined in:
lib/tophat/twitter_card.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type) ⇒ TwitterCardGenerator

Returns a new instance of TwitterCardGenerator.



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# File 'lib/tophat/twitter_card.rb', line 9

def initialize(type)
  @type = type
  @card_data = {}
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object

:nodoc



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# File 'lib/tophat/twitter_card.rb', line 33

def method_missing(method, *args, &block) #:nodoc
  @card_data ||= {}
  @card_data[method] = args.shift
  add_nested_attributes(method, &block) if block_given?
end

Instance Attribute Details

#card_data ⇒ Object (readonly)

Returns the value of attribute card_data.



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# File 'lib/tophat/twitter_card.rb', line 7

def card_data
  @card_data
end

Instance Method Details

#add_nested_attributes(method, &block) ⇒ Object 



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# File 'lib/tophat/twitter_card.rb', line 25

def add_nested_attributes(method, &block)
  image_generator = TwitterCardGenerator.new(method)
  image_generator.instance_eval(&block) if block_given?
  image_generator.card_data.each do |key, value|
    @card_data["#{method}:#{key}"] = value
  end
end

#render ⇒ Object 



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# File 'lib/tophat/twitter_card.rb', line 14

def render
  output = ""
  output << tag(:meta, :name => 'twitter:card', :value => @type)
  @card_data.each do |key, value|
    output << '\n'
    output << tag(:meta, :name => "twitter:#{key}", :value => value)
  end
  output << '\n' unless @card_data.empty?
  output
end