Scrapbook

Scrapbook allows you to create a heirarchal set of view templates that can run code from your Rails application without the need to create a route or controller for each template. All you need to do is install and configure Scrapbook, and then you can add folders and template files to your heart's content.

Scrapbook started life wanting to be able to test out Rails helper methods and showcase their behavior. These helper methods called more complex Ruby classes to create a set of rich components, and we needed a way to showcase these components and their capabilites. I decided to create a more general application that could allow us to generate and organize any view templates that our Rails application knew how to process. Scrapbook is the result. Along the way, we discovered that not only was it a great place to document our components, but it was also great for doing the initial development as well.

Add scrapbook to the :development group of your application's Gemfile:

group :development do
  gem 'scrapbook'
end

And then execute:

$> bundle install
$> bundle exec rails generate scrapbook:install

This will install the gem and then setup a scrapbook directory structure with a folder named "scrapbook" at the root of your Rails application as well as modify your routes to make the scrapbook available.

A scrapbook folder needs to contain a "pages" sub-folder. Any files and folders created in that "pages" folder will be exposed as part of the scrapbook unless their name begins with a period. These files and folders will show up as navigatable in Scrapbook's file browser, and if the file is a template file whose engine your main Rails application has installed, it will be properly processed to generate the HTML for you to view. These templates have access to all the helper methods defined in your main Rails application.

When a folder is selected in Scrapbook's file browser, by default a small message appears in the main display area describing how to customize what is displayed when a folder is selected. In short, you need to create a template file with the same base name as the folder in the same directory as the folder. So if you had a folder at "scrapbook/pages/scratch", then you would need to create a file named something like "scrapbook/pages/scratch.html.erb" with the custom view you want to see when you click on the "scratch" folder in the file browser. This also works for the main screen you see at the base scrapbook URL. You can customize that screen by creating a "pages.html" template file in the root scrapbook folder. (The default installation creates a "pages.html.erb" template file for the basic welcome message.)

To view a scrapbook, navigate to its base URL setup by the route file configuration. (See the documentation for the scrapbook route helper for more information on how to conigure this route.)

The installation task adds extend Scrapbook::Routing to the routes configuration block which gives it access to the scrapbook route helper. It also addds a scrapbook named "scrapbook" using that helper (scrapbook('scrapbook')). You can modify that configuration, specifying the location of the folder root or the URL path to mount the scrapbook at. You can also add additional scrapbooks using this helper. For example:

Rails.application.routes.draw do
  extend Scrapbook::Routing

  scrapbook('main', at: '/scrapbook', folder_root: 'scrapbooks/main')
  scrapbook('scratch', folder_root: 'scrapbooks/scratch')
end

We recommend only running Scrapbook in development / non-production Rails environments. However, if you find yourself needing to be able to run it in an environment precompiles its assets, you will need to configure Scrapbook to be part of the precompilation. You can do this by setting config.scrapbook.precompile_assets to "true":

Rails.application.configure do
  config.scrapbook.precompile_assets = true
end

If you have a question about Scrapbook, feel free to ask in the repository's Discussions. Before starting any work or creating any issues, please read the contribution guidelines.

If you need to submit updates to the theme or are using new Tailwind classes, you'll need to follow the instructions to install the CLI. After that you'll need to run the following commands to install the plugins:

$> npm install -D @tailwindcss/forms
$> npm install -D @tailwindcss/aspect-ratio
$> npm install -D @tailwindcss/typography

Once Tailwind's CLI has been installed, you can run it using the command below to update Scrapbook's CSS:

$> npx tailwindcss -i app/assets/stylesheets/scrapbook/application.tailwind.css -o app/assets/builds/scrapbook/application.css --minify --watch

(Note, the "tailwindcss-rails" gem currently doesn't support Rails engines, so we have to install and run Tailwind manually.)

• Download the compiled JS file from the turbo rails gem. (The releases on the Turbo website didn't include it.)
• Comment out or remove the export statement towards the end.

Copyright 2022 Brad Lindsay

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.