Module: DataMapper::Support::Serialization

Defined in:
lib/data_mapper/support/serialization.rb

Instance Method Summary collapse

Instance Method Details

#get_value_for_column(column) ⇒ Object 



90
91
92
 
# File 'lib/data_mapper/support/serialization.rb', line 90

def get_value_for_column(column)
  send(column.type == :boolean ? column.name.to_s.ensure_ends_with('?') : column.name)
end

#to_csv(writer = "") ⇒ Object 



83
84
85
86
87
88
 
# File 'lib/data_mapper/support/serialization.rb', line 83

def to_csv(writer = "")
  FasterCSV.generate(writer) do |csv|
    csv << database_context.table(self.class).columns.map { |column| get_value_for_column(column) }
  end
  return writer
end

#to_json(*a) ⇒ Object 



70
71
72
73
74
75
76
77
78
79
80
81
 
# File 'lib/data_mapper/support/serialization.rb', line 70

def to_json(*a)
  table = database_context.table(self.class)
  
  result = '{ '
  
  result << table.columns.map do |column|
    "#{column.name.to_json}: #{get_value_for_column(column).to_json(*a)}"
  end.join(', ')
  
  result << ' }'
  result
end

#to_xml ⇒ Object 



36
37
38
 
# File 'lib/data_mapper/support/serialization.rb', line 36

def to_xml
  to_xml_document.to_s
end

#to_xml_document ⇒ Object 



44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
 
# File 'lib/data_mapper/support/serialization.rb', line 44

def to_xml_document
  doc = REXML::Document.new
  
  table = database_context.table(self.class)
  # root = doc.add_element(Inflector.underscore(self.class.name))
  root = doc.add_element(xml_element_name)
  
  key_attribute = root.attributes << REXML::Attribute.new(table.key.to_s, key)
  
  # Single-quoted attributes are ugly. :p
  # NOTE: I don't want to break existing REXML specs for everyone, so I'm
  # overwriting REXML::Attribute#to_string just for this instance.
  def key_attribute.to_string
    %Q[#@expanded_name="#{to_s().gsub(/"/, '&quot;')}"] 
  end
  
  table.columns.each do |column|
    next if column.key?
    value = get_value_for_column(column)
    node = root.add_element(column.to_s)
    node << REXML::Text.new(value.to_s) unless value.nil?
  end
  
  doc
end

#to_yaml(opts = {}) ⇒ Object 



19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
 
# File 'lib/data_mapper/support/serialization.rb', line 19

def to_yaml(opts = {})
  
  YAML::quick_emit( object_id, opts ) do |out|
    out.map(nil, to_yaml_style ) do |map|
      database_context.table(self).columns.each do |column|
        lazy_load!(column.name) if column.lazy?
        value = get_value_for_column(column)
        map.add(column.to_s, value.is_a?(Class) ? value.to_s : value)
      end
      (self.instance_variable_get("@yaml_added") || []).each do |k,v|
        map.add(k.to_s, v)
      end
    end
  end
  
end

#xml_element_name ⇒ Object

overloadable



40
41
42
 
# File 'lib/data_mapper/support/serialization.rb', line 40

def xml_element_name ## overloadable
  Inflector.underscore(self.class.name)
end