Module: Recliner::Conversions

Extended by:
Conversions
Included in:
Conversions
Defined in:
lib/recliner/conversions.rb

Defined Under Namespace

Classes: ConversionError

Instance Method Summary collapse

Instance Method Details

#clear! ⇒ Object 



8
9
10
 
# File 'lib/recliner/conversions.rb', line 8

def clear!
  conversions.clear
end

#convert(from, to, options = {}) ⇒ Object 



12
13
14
15
16
17
18
19
20
21
22
23
 
# File 'lib/recliner/conversions.rb', line 12

def convert(from, to, options={})
  return nil if from.nil?
  return from if to.is_a?(Class) && from.kind_of?(to)
  
  source = options[:source] || from.class
  
  if block = conversion(source, to)
    from.instance_eval(&block) rescue nil
  else
    raise ConversionError, "No registered conversion from #{source} to #{to.inspect}"
  end
end

#convert!(from, to, options = {}) ⇒ Object 



25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
 
# File 'lib/recliner/conversions.rb', line 25

def convert!(from, to, options={})
  return nil if from.nil?
  return from if to.is_a?(Class) && from.kind_of?(to)
  
  source = options[:source] || from.class
  
  if block = conversion(source, to)
    begin
      from.instance_eval(&block)
    rescue => e
      raise ConversionError, "Conversion block raised exception"
    end
  else
    raise ConversionError, "No registered conversion from #{source} to #{to.inspect}"
  end
end

#register(from, to, &block) ⇒ Object 



42
43
44
 
# File 'lib/recliner/conversions.rb', line 42

def register(from, to, &block)
  conversions[from][to] = block
end