Class: Haml::Buffer

Inherits:
Object
  • Object
show all
Defined in:
lib/green_monkey/ext/haml.rb

Overview

this hack looks at active-record object’s :html_schema_type field and adds itemscope, itemid and itemtype to element example:

%article

> <article class=“post” itemscope itemtype=“schema.org/BlogPosting” itemid=“1”>

%section

> <section itemscope itemtype=“schema.org/Blog”>

%section[Mida(:Blog), :sexjokes]

> <section itemscope itemtype=“schema.org/Blog/SexJokes”>

according to “Extension Mechanism” at schema.org/docs/extension.html

%span Hello

> <span itemprop=“title”>Hello</span>

Instance Method Summary collapse

Instance Method Details

#parse_object_ref(ref) ⇒ Object

this methods calls then you pass %tag[object1, object2] ref argument is array



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# File 'lib/green_monkey/ext/haml.rb', line 24

def parse_object_ref(ref)
  options = {}
  ref.each do |obj|
    next if obj == "local-variable"
    self.class.merge_attrs(options, process_object_ref(obj))
  end
  
  options
end

#process_object_ref(obj) ⇒ Object 



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# File 'lib/green_monkey/ext/haml.rb', line 34

def process_object_ref(obj)
  return {} if !obj
  
  if obj.is_a?(Symbol)
    # symbol => "itemprop" attribute
    return {'itemprop' => obj.to_s}
  elsif obj.kind_of?(Mida::Vocabulary)
    # Mida::Vocabulary => itemprop and itemtype
    return {itemscope: true, itemtype: obj.itemtype.source}
  elsif obj.is_a?(String)
    return {class: obj}
  else
    options = {}
    options[:class] = obj.respond_to?(:haml_object_ref) ? obj.haml_object_ref : underscore(obj.class)
    options[:id] = "#{options[:class]}_#{obj.id || 'new'}" if obj.respond_to?(:id)
    
    # my hack for microdata attributes
    if obj.respond_to?(:html_schema_type)
      options[:itemscope] = true
      options[:itemid] = obj.id
      
      if obj.html_schema_type.kind_of?(Mida::Vocabulary)
        options[:itemtype] = obj.html_schema_type.itemtype.source
      else
        raise "No vocabulary found (#{obj.html_schema_type})" unless Mida::Vocabulary.find(obj.html_schema_type)
        options[:itemtype] = obj.html_schema_type
      end
    end
    
    return options
  end
end