ActiveModel::VersionSerializer

fairly short name. This is a little spin on active model serializers

what is that?

The purpose of ActiveModel::Serializers is to provide an object to encapsulate serialization of ActiveModel objects, including ActiveRecord objects.

Serializers know about both a model and the current_user, so you can customize serialization based upon whether a user is authorized to see the content.

In short, serializers replaces hash-driven development with object-oriented development.

More Information Go See ActiveModel::Serializer

Versioning

Why?

Good Question!

When building an api; one would go through various changes in terms of versioning. you could seperate this out into modules and that is my perfered way. But hey why not have a place where you can easily see changes in an expressive way.

Show Me

Has the same api as active_model_serializers however we can define a named version block. it also has some extra source for using previously defined version attributes.

Notice we inherit from ActiveModel::VersionSerializer

class UserSerializer < ActiveModel::VersionSerializer

  version :v1 do
    attributes :name, :remote_image, :likes_beans, :id
  end

  version :v2 do
    version_attributes :v1, without: [:likes_beans, :remote_image]
  end

  version :v3 do
    version_attributes :v1, with: :date_of_birth
    embed :ids, :include => true
    has_many :turns
  end
end

Explict Version

UserSerializer.new(user, version: v3)

Controller

ActiveModel::Serializers gives you some controller goodness in terms of defining scope for your serializers but you now also specify a version.

    # Any logic that you have to determine the version wanted for that request
    # can go here!
    def default_serializer_options
      {version: some_method_determining_version}
    end

 I want to specify a default VERSION

ok

ActiveModel::VersionSerializer.default :v3

Installation

Add this line to your application's Gemfile:

gem 'active_model_version_serializers'

And then execute:

$ bundle

Or install it yourself as:

$ gem install active_model_version_serializers

Usage

Contributing

1. Fork it
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create new Pull Request