ActiveRecord Tablefree

Project	ActiveRecord Tablefree
gem name	activerecord-tablefree
license	MIT
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homepage	https://github.com/boltthreads/activerecord-tablefree
documentation	http://rdoc.info/github/boltthreads/activerecord-tablefree/frames
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A simple implementation of the ActiveRecord Tableless pattern for any Rails project or other Ruby project that uses ActiveRecord.

Why, why, why

Why would you ever consider this gem as opposed to ActiveModel.

ActiveModel::Model does not support relations and nested attributes.

Installation

ActiveRecord Tablefree is distributed as a gem, which is how it should be used in your app.

Include the gem in your Gemfile:

gem "activerecord-tablefree", "~> 1.0"

Supported Versions

Supported ruby version are

2.2.x series higher than 2.2.2
2.3.x series

If you are using Ruby version < 2.2.2 you can use the gem version < 2.0 like this

gem "activerecord-tablefree", "~> 1.0.0"

Supported ActiveRecord versions are

3.0.x series
3.2.x series
4.1.x series
4.2.x series

If you are using ActiveRecord 2.3.x series you can use the gem version < 2.0 like this

gem "activerecord-tablefree", "~> 1.0.0"

You may be able to make it work with 3.1.x, but you should expect to put some time in it.

TODO

Support Rails 5.x series

Usage

Define a model like this:

class ContactMessage < ActiveRecord::Base
  has_no_table
  column :name, :string
  column :email, :string
  validates_presence_of :name, :email
end

You can now use the model in a view like this:

<%= form_for :message, @message do |f| %>
  Your name: <%= f.text_field :name %>
  Your email: <%= f.text_field :email %>
<% end %>

And in the controller:

def message
  @message = ContactMessage.new
  if request.post?
    @message.attributes = params[:message]
    if @message.valid?
      # Process the message...
    end
  end
end

If you wish (this is not recommended), you can pretend you have a succeeding database by using

has_no_table :database => :pretend_success

Development

To start developing, please download the source code

git clone git://github.com/boltthreads/activerecord-tablefree.git

Install development libraries

sudo apt-get install -y libsqlite3-dev libxml2-dev libxslt-dev

When downloaded, you can start issuing the commands like

bundle install
bundle update
bundle exec appraisal generate
bundle exec appraisal install
bundle exec appraisal rake all

Or you can see what other options are there:

bundle exec rake -T

Publishing gem

gem bump -v pre

Verify everything is OK.

gem build activerecord-tablefree.gemspec

Verify everything is OK.

gem release -t

History

Originally this code was implemented for Rails 2 by Kenneth Kalmer. For Rails 3 the need for this functionality was reduced dramatically due to the introduction of ActiveModel. But because the ActiveModel does not support relations and nested attributes the existence of this gem is still justified.

Rails 3 and 4 support is provided in the activerecord-tableless gem, by Jarl Friis.

This gem is a Rails 5 compatible update, and renaming of that gem.

For a history of technical implementation details feel free to take a look in the git log :-)

Copyright

The license is MIT. See LICENSE.txt for further details.