Module: LogicalModel::HasManyKeys::ClassMethods

Defined in:
lib/logical_model/has_many_keys.rb

Instance Method Summary collapse

Instance Method Details

#has_many_keys ⇒ Object 



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# File 'lib/logical_model/has_many_keys.rb', line 70

def has_many_keys
  @has_many_keys
end

#has_many_keys=(keys) ⇒ Object 



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# File 'lib/logical_model/has_many_keys.rb', line 10

def has_many_keys=(keys)
  @has_many_keys = keys
  attr_accessor *keys

  keys.each do |association|

    # return empty array or @association variable for each association
    define_method association do
      if instance_variable_get("@#{association}").blank?
        instance_variable_set("@#{association}", [])
      end

      instance_variable_get("@#{association}")
    end

    # this method loads the contact attributes recieved by logical model from the service
    define_method "#{association}=" do |params|
      collection = []
      params.each do |attr_params|
        if attr_params["_type"].present?
          attr_class = attr_params.delete("_type").to_s.constantize
        else
          attr_class = association.to_s.singularize.camelize.constantize
        end
        collection << attr_class.new(attr_params)
      end
      instance_variable_set("@#{association}", collection)
    end

    define_method "new_#{association.to_s.singularize}" do |attr_params|
      if attr_params["_type"].present?
        clazz = attr_params.delete(:_type).constantize
      else
        clazz = association.to_s.singularize.camelize.constantize
      end

      return unless clazz

      temp_object = clazz.new(attr_params.merge({"#{self.json_root}_id" => self.id}))
      eval(association.to_s) << temp_object
      temp_object
    end

    # this method loads the contact attributes from the html form (using nested resources conventions)
    define_method "#{association}_attributes=" do |key_attributes|
      array = []
      key_attributes.each do |attr_params|
        attr_params.to_hash.symbolize_keys!
        if attr_params["_type"].present?
          attr_class = attr_params.delete("_type").to_s.constantize
        else
          attr_class = association.to_s.singularize.camelize.constantize
        end
        array << attr_class.new(attr_params)
      end
      instance_variable_set("@#{association}", array)
    end
  end
end