Class: Protoform::Rails::OptionMapper

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/protoform/rails/option_mapper.rb

Overview

Accept a collection of objects and map them to options suitable for form controls, like ‘select > options`

Instance Method Summary collapse

Constructor Details

#initialize(collection) ⇒ OptionMapper

Returns a new instance of OptionMapper.



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# File 'lib/protoform/rails/option_mapper.rb', line 13

def initialize(collection)
  @collection = collection
end

Instance Method Details

#active_record_relation_options_enumerable(relation) ⇒ Object 



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# File 'lib/protoform/rails/option_mapper.rb', line 30

def active_record_relation_options_enumerable(relation)
  Enumerator.new do |collection|
    relation.each do |object|
      attributes = object.attributes
      id = attributes.delete(relation.primary_key)
      value = attributes.values.join(" ")
      collection << [id, value]
    end
  end
end

#each(&options) ⇒ Object 



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# File 'lib/protoform/rails/option_mapper.rb', line 17

def each(&options)
  @collection.each do |object|
    case object
    in ActiveRecord::Relation => relation
      active_record_relation_options_enumerable(relation).each(&options)
    in id, value
      yield id, value
    in value
      yield value, value.to_s
    end
  end
end