Class: Strobe::Association

Inherits:
Object
  • Object
show all
Defined in:
lib/strobe/association.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(source, cardinality, name, options) ⇒ Association

Returns a new instance of Association.



5
6
7
8
9
10
# File 'lib/strobe/association.rb', line 5

def initialize(source, cardinality, name, options)
  @source      = source
  @cardinality = cardinality
  @name        = name.to_sym
  @options     = options
end

Instance Attribute Details

#cardinalityObject (readonly)

Returns the value of attribute cardinality.



3
4
5
# File 'lib/strobe/association.rb', line 3

def cardinality
  @cardinality
end

#nameObject (readonly)

Returns the value of attribute name.



3
4
5
# File 'lib/strobe/association.rb', line 3

def name
  @name
end

#optionsObject (readonly)

Returns the value of attribute options.



3
4
5
# File 'lib/strobe/association.rb', line 3

def options
  @options
end

#sourceObject (readonly)

Returns the value of attribute source.



3
4
5
# File 'lib/strobe/association.rb', line 3

def source
  @source
end

Instance Method Details

#autoload?Boolean

Returns:

  • (Boolean)


28
29
30
# File 'lib/strobe/association.rb', line 28

def autoload?
  !options.key?(:autoload) || options[:autoload]
end

#collection?Boolean

Returns:

  • (Boolean)


24
25
26
# File 'lib/strobe/association.rb', line 24

def collection?
  cardinality == :n
end

#denormalize_params(item, params) ⇒ Object



40
41
42
43
44
45
46
47
48
49
50
51
52
# File 'lib/strobe/association.rb', line 40

def denormalize_params(item, params)
  return item unless targets = params[target_pluralized]

  if collection?
    raise NotImplemented
  else
    if id = item["#{name}_id"]
      return item.merge(name.to_s => targets.find { |t| t["id"] == id })
    end
  end

  item
end

#include?Boolean

Returns:

  • (Boolean)


36
37
38
# File 'lib/strobe/association.rb', line 36

def include?
  options[:include]
end

#nested?Boolean

Returns:

  • (Boolean)


32
33
34
# File 'lib/strobe/association.rb', line 32

def nested?
  options[:nested]
end

#readerObject



54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
# File 'lib/strobe/association.rb', line 54

def reader
  ruby = []
  ruby <<   "def #{name}"

  if autoload? && collection?

    ruby << "  @__#{name} ||= Strobe::Collection.new( "                  \
            "    #{target_name}, '#{source.singular_resource_name}_id' " \
            "    => self[:id] ) if self[:id]"

  elsif autoload?

    ruby << " return @__#{name} if @__#{name}"
    ruby << " return nil unless self[:#{name}_id]"
    ruby << " @__#{name} = #{target_name}.get!( self[:#{name}_id] )"

  end

  ruby <<   "  @__#{name}"

  ruby <<   "end"
  ruby.join("\n")
end

#targetObject



20
21
22
# File 'lib/strobe/association.rb', line 20

def target
  @target ||= target_name.constantize
end

#target_nameObject



12
13
14
# File 'lib/strobe/association.rb', line 12

def target_name
  'Strobe::Resources::' + name.to_s.classify
end

#target_pluralizedObject



16
17
18
# File 'lib/strobe/association.rb', line 16

def target_pluralized
  name.to_s.pluralize
end

#writerObject



78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
# File 'lib/strobe/association.rb', line 78

def writer
  ruby = []
  ruby <<   "def #{name}=(val)"

  if collection?

    ruby << "  raise NotImplementedError"

  else

    ruby << "  if val"
    ruby << "    if val.is_a?(Hash)"
    ruby << "      val = #{target_name}.new(val)"
    ruby << "    elsif !val.is_a?(#{target_name})"
    ruby << "      raise 'fail'"
    ruby << "    end"

    ruby << "    self[:#{name}_id] = val[:id]" if autoload?
    ruby << "    @__#{name} = val"
    ruby << "  else"
    ruby << "    self[:#{name}_id] = nil" if autoload?
    ruby << "    @__#{name} = nil"
    ruby << "  end"

  end

  ruby <<   "end"

  ruby.join("\n")
end