Component-centric form object rendering for Ruby. Bridgetown, Roda, and Rails all supported.

Add Lifeform to your application's Gemfile by running:

bundle add lifeform

Full documentation coming as the library begins to mature. TL;DR:

Given a form object of:

class TestForm < Lifeform::Form
  field :occupation, label: "Your Job", id: "your-occupation", required: true
  field :age, library: :shoelace, label: "Your Age"

  field :submit, type: :submit_button, label: "Save", class: "font-bold"
end

And a template rendering of:

<!-- ERB -->
<%= render TestForm.new(url: "/path") do |f| %>
  <%= render f.field(:occupation) %>
  <%= render f.field(:age, value: 47) %>
  <%= render f.field(:submit) %>
<% end %>

You get the following HTML output:

<form method="post" accept-charset="UTF-8" action="/path">
  <input type="hidden" name="authenticity_token" value="[token]" />
  <form-field name="occupation">
    <label for="your-occupation">Your Job</label>
    <input type="text" id="your-occupation" required name="occupation" />
  </form-field>
  <form-field name="age">
    <sl-input type="text" label="Your Age" name="age" value="47" id="age"></sl-input>
  </form-field>
  <form-button name="commit">
    <button class="font-bold" name="commit" type="submit">Save</button>
  </form-button>
</form>

Nested names based on models (aka profile[name]) and inferred action paths are supported as well.

Multiple component libraries and input types—and easy customizability using string interpolation templates and helpers—are a fundamental aspect of the architecture of Lifeform. Until further docs have been written, you can look in lib/lifeform/libraries to see how some initial field types were constructed.

For simple forms, you can avoid the need to render fields individually in your template. Given the form example above, you could write in your template:

<%= render TestForm.new(url: "/path") %>

And the fields defined in TestForm would render out automatically (since no block was provided to the render method).

After checking out the repo, run bin/setup to install dependencies. Then, run bin/rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bin/rake release, which will create a git tag for the version, push git commits and the created tag, and push the .gem file to rubygems.org.

Bug reports and pull requests are welcome on GitHub at https://github.com/bridgetownrb/lifeform. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the code of conduct.

The gem is available as open source under the terms of the MIT License.

Everyone interacting in the Lifeform project's codebases, issue trackers, chat rooms and mailing lists is expected to follow the code of conduct.