Module: Graboid::Scraper::ClassMethods

Defined in:
lib/graboid/scraper.rb

Instance Method Summary collapse

Instance Method Details

#callbacks ⇒ Object 



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# File 'lib/graboid/scraper.rb', line 35

def callbacks
  read_inheritable_attribute :callbacks
end

#inferred_selector ⇒ Object 



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# File 'lib/graboid/scraper.rb', line 39

def inferred_selector
  @inferred_selector ||= ".#{self.to_s.underscore}"
end

#inherited(subclass) ⇒ Object 



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# File 'lib/graboid/scraper.rb', line 28

def inherited(subclass)
  @inherited_attributes.each do |inheritable_attribute|
    instance_var = "@#{inheritable_attribute}"
    subclass.instance_variable_set(instance_var, instance_variable_get(instance_var))
  end
end

#inherited_attributes(*args) ⇒ Object 



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# File 'lib/graboid/scraper.rb', line 17

def inherited_attributes(*args)
  @inherited_attributes ||= [:inherited_attributes]
  @inherited_attributes += args
  args.each do |arg|
    class_eval %(
      class << self; attr_accessor :#{arg} end
    )
  end
  @inherited_attributes
end

#page_with(&block) ⇒ Object 



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# File 'lib/graboid/scraper.rb', line 43

def page_with &block
  define_method :pager do
    instance_eval &block
  end
end

#root_selector ⇒ Object 



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# File 'lib/graboid/scraper.rb', line 49

def root_selector
  @root_selector || inferred_selector
end

#selector(selector) ⇒ Object Also known as: root 



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# File 'lib/graboid/scraper.rb', line 53

def selector selector
  @root_selector = selector
end

#set(name, opts = {}, &block) ⇒ Object 



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# File 'lib/graboid/scraper.rb', line 59

def set name, opts={}, &block
  opts.merge!(:selector   => ".#{name}")  if opts[:selector].nil?
  opts.merge!(:processor  => block)       if block_given?
  
  attribute_map[name] = opts
end