Module: Zena::Acts::Serializable::ModelMethods

Included in:
Node
Defined in:
lib/zena/acts/serializable.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/zena/acts/serializable.rb', line 78

def self.included(base)
  class << base
    cattr_accessor :export_procs

    def export_xml(proc)
      self.export_procs << proc
    end
  end
  base.export_procs = []
end

Instance Method Details



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# File 'lib/zena/acts/serializable.rb', line 123

def all_link_ids
  res   = {}
  roles = {}

  # Yes, UNION is the fastest way to do this (54k data, 600 links). UNION = 0.02s, OR = 124s !!
  sql = [%Q{SELECT nodes.zip, links.relation_id, links.source_id FROM nodes INNER JOIN links ON nodes.id = links.target_id AND links.source_id = ? WHERE #{secure_scope('nodes')} UNION SELECT nodes.zip, links.relation_id, links.source_id FROM nodes INNER JOIN links ON nodes.id = links.source_id AND links.target_id = ? WHERE #{secure_scope('nodes')}}, self.id, self.id]

  Zena::Db.select_all(sql).each do |record|
    (roles[record['relation_id']] ||= []) << record
  end

  res["parent_id"] = parent_zip.to_s

  roles.each do |relation_id, records|
    relation = secure(Relation) { Relation.find(relation_id) }
    records.each do |record|
      if record['source_id'].to_i == id
        if relation.target_unique?
          res["#{relation[:target_role]}_id"] = record['zip']
        else
          (res["#{relation[:target_role]}_ids"] ||= []) << record['zip']
        end
      else
        if relation.source_unique?
          res["#{relation[:source_role]}_id"] = record['zip']
        else
          (res["#{relation[:source_role]}_ids"] ||= []) << record['zip']
        end
      end
    end
  end

  res
end

#default_serialization_options ⇒ Object 



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# File 'lib/zena/acts/serializable.rb', line 95

def default_serialization_options
  { :only       => %w{created_at updated_at log_at event_at kpath ref_lang fullpath position},
    :methods    => %w{v_status klass},
    :procs      => self.class.export_procs,
    :record     => self, # needed by procs
    :properties => export_properties,
    :ids        => export_ids,
    :dasherize  => false,
    :root       => 'node',
  }
end

#export_ids ⇒ Object 



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# File 'lib/zena/acts/serializable.rb', line 119

def export_ids
  {'id' => zip}.merge(all_link_ids)
end

#export_properties ⇒ Object 



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# File 'lib/zena/acts/serializable.rb', line 107

def export_properties
  res  = {}
  prop = self.prop
  schema.safe_columns.each do |col|
    key = col.name
    value = prop[key]
    next if value.blank?
    res[key] = value
  end
  res
end

#to_xml(options = {}, &block) ⇒ Object 



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# File 'lib/zena/acts/serializable.rb', line 89

def to_xml(options = {}, &block)
  options = default_serialization_options.merge(options)
  serializer = XmlNodeSerializer.new(self, options)
  block_given? ? serializer.to_s(&block) : serializer.to_s
end