Module: Hermes::Builders

Defined in:
lib/hermes/builders.rb

Constant Summary collapse

@@builders = 
ActiveSupport::OrderedHash.new

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &block) ⇒ Object 



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# File 'lib/hermes/builders.rb', line 107

def method_missing(method, *args, &block)
  case method.to_s
  when /(create|new)_(.*?)(!)?$/
    klass, hash = Builders.retrieve(self, $2, method, args.first)
    object = klass.new
    object.send("attributes=", hash, false)
    object.send("save#{$3}") if $1 == "create"
    object
  when /valid_(.*?)_attributes$/
    Builders.retrieve(self, $1, method, args.first)[1]
  else
    super
  end
end

Class Method Details

.build(name, options = {}, &block) ⇒ Object 



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# File 'lib/hermes/builders.rb', line 84

def self.build(name, options={}, &block)
  klass = options[:as] || name.to_s.classify.constantize

  builder = if options[:like]
    lambda { send(name.to_s.pluralize, options[:like]).attributes.merge(block.call) }
  else
    block
  end

  @@builders[name] = [klass, builder]
end

.retrieve(scope, name, method, options) ⇒ Object 



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# File 'lib/hermes/builders.rb', line 96

def self.retrieve(scope, name, method, options)
  if builder = @@builders[name.to_sym]
    klass, block = builder
    hash = block.bind(scope).call.merge(options || {})
    hash.delete("id")
    [klass, hash]
  else
    raise NoMethodError, "No builder #{name.inspect} for `#{method}'"
  end
end