Cardboard

Cardboard is a simple CMS Engine for your Rails 4 applications.

Features

Build for Rails 4
Make your site and your admin area the standard rails way (no complex engines)
Create pages and site settings in seconds
Repeatable page parts
Write your views in haml/slim/erb...! (no restrictive DSL or templating language)
Your customers will love the UI/UX
Super easy to extend and customize
It's like your favorite admin interface gem just had a baby with a CMS

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Requirements

An authentication solution. For example, here is what you need to do to get Devise installed.
imagemagick (on mac do brew install imagemagick)
Rails 4 and Ruby 2.0

Installation

Add the gem to the Gemfile

gem "cardboard_cms", github: "smashingboxes/cardboard"

And run bundle install.

Run the generator to install cardboard and it's migrations:

rails g cardboard:install
rake db:migrate

Edit your config/cardboard.yml file then run

rake cardboard:seed

Usage

Get a page

Add a file in your app/views/templates with filename matching the identifier of the page. Inside this file you can access the page with:

current_page

Fetch a page part

current_page.get('slideshow')

Fetch a repeatable page part

Repeatable parts returns an active record collection. This means that regular Rails methods such as where, limit, first, each, etc can be used on page parts

- current_page.get('slideshow').each do |slide|
  p= image_tag slide.attr('image1').thumb('600x300').url, alt: slide.attr('description') if slide.attr('image1')

Fetch a single field

If this part is not repeatable you can use both

current_page.get('intro').attr('text1')
# Or
current_page.get('intro.text1')

Image Fields methods

Images returned by image type fields are Dragonfly objects. As such, it's possible to edit them directly from the view.

if image = current_page.get('intro.image1')
  image.url                 # URL of the modified image
  image.thumb('40x30#').url  # resize, crop if necessary to maintain aspect ratio (centre gravity)
  image.process(:greyscale).thumb('40x30#').url
end # Hint: remember to check if image is not nil before calling methods on it

More options and methods are available at Dragonfly's Documentation

File field methods

Similarly to images, files are also Dragonfly objects. This allows such methods as:

file.format              # => :pdf
file.name                # => "some.pdf"
number_to_human_size(file.size) # => "486 KB"

Create Pages

To add pages to cardboard edit config/cardboard.yml. See an sample cardboard.yml in https://github.com/smashingboxes/cardboard/blob/master/test/dummy/config/cardboard.yml

pages:
  home_page:
    title: Default page title
    parts:
      slideshow:
        repeatable: true
        fields:
          image1:
            type: image
            required: true
            default: CrashTest.jpg
            position: 0

pages, parts and fields take identifiers (home_page, slideshow and image1) used to reference the data form the views. Choose these names carefully!

Pages

Each page section starts with the name of it's unique identifier. This name is used to reference the page in the code an thus should not change throughout the life of the project.

Key	Type	Default	Definition
parts	hash	nil	a list of page parts
title	string	identifier	name of the page as shown in the nav bar
position	integer	auto-increment	position of the page on the nav bar (the lowest position is the home page!)
parent_id	string	nil	identifier of the parent page (used for nested pages)

Parts

Each part sub-section starts with the name of it's unique identifier. This name is used to reference the part in the code an thus should not change throughout the life of the project.

Key	Type	Default	Definition
fields	hash	nil	list of fields that make this part's form
position	integer	auto-increment	position of the part on the admin page
repeatable	boolean	false	can the client add multiple of these parts (example a slide in a slideshow)

fields

Each field sub-section starts with the name of it's unique identifier. This name is used to reference the field in the code an thus should not change throughout the life of the project.

Key	Type	Default	Definition
label	string	identifier	form field label
hint	string	nil	form field hint
placeholder	string	nil	form field placeholder
position	integer	auto-increment	position of the field within the part (only for the admin area)
required	boolean	true	must this field have a value for the form to save
type	string	`string`	choose between: `boolean`, `date`, `decimal`, `file`, `image`, `integer`, `rich_text`, `text`, `string`, `resource_link` (needs value: resource_linked (same as the controller name ex: pianos)), `external_link` (needs value: http://site.com)
default	string	nil	set the value but don't overwrite (only set if nil). Put default images in /assets/images/defaults and default files in /assets/files/defaults
value	string	nil	USE ONLY FOR types `resource_link` and `external_link` (this will overwrite user input, in most cases use the `default` key instead)

Create Resources

To add an admin area for a model simply type (make sure the model exists first and migrations have been run)

rails g cardboard:resource model_name

Then customize the controllers/cardboard/model_name_controller.rb and associated views to your heart's desire.

The default cardboard resource scaffold help you quickly get started by making the most of the following gems.

Gem	Description
InheritedResources	Inherited Resources speeds up development by making your controllers inherit all restful actions so you just have to focus on what is important.
Simple Form	Forms made easy! It's tied to a simple DSL, with no opinion on markup.
Kaminari	A Scope & Engine based, clean, powerful, customizable and sophisticated paginator
Ransack	Object-based searching and filtering
Dragonfly	On-the-fly image processing and file uploading

  menu  label: "Test", priority: 1

You can also choose to remove a resource from the menu

  menu  false

Sorting

  default_order "name DESC" # default: 'updated_at desc'

You can pass any ransack sort order, which includes associations. Example:

  default_order "user_name" # belongs to a user

Filter helper

You can show filters on your resource index page simply by adding cardboard_filters, with the model class, the main field to search (has to be a text or string field), and options.

= cardboard_filters User, :name

title: change the page's title (optional)

new_button: Options for the button used to create a new resource element. Can be false to remove it, or label and url can be modified (optional).

predicate: defaults to cont (contains). Note: On non text fields, this field is required

Example:

= cardboard_filters User, :name, title: "Employees", new_button: {label: "Add an employee"}

Pagination Helper

We use kaminari, so all you need to do is add to your index view:

= paginate @users

Column sorting helper

Cardboard's controllers inherit from a @q variable which gives access to the ransack gem.

= sort_link @q, :name, "Product Name"

Custom resource helpers

To add custom helpers for your resource simply create a helper with the same name. Example:

module Cardboard
  module PianosHelper
  end
end

Make sure this file is located under app/helpers/cardboard

Custom CSS/JS

The css/js for the resources is the same as the cardboard admin interface. If you'd like to extend or overwrite some of these, simply edit the cardboard.css.scss or cardboard.js files located in your assets folder. These files were generated during the cardboard installation.

Note: Make sure to remove *= require_tree . from your application.css, you don't want your cardboard css and js to leak into your main app!

Create Settings

You can create new settings that will be editable from the admin panel.

In your config/cardboard.yml

settings:
  my_custom_setting:
    type: boolean
    default: true

all options/types from fields are available

Then you can use this setting in your views or controllers like so:

Cardboard::Setting.my_custom_setting

View Helpers

Access Pages

current_page

you can put your controller instance variables at the top of your view or in a decorator

app
|- decorators
  |- controllers
    |- pages_decorator

PagesController.class_eval do
  def page_identifier
    @example = "cool"
  end
end

Page Path

In your controllers you may want to redirect to a specific page. You can do so with the following:

page_path("identifier_for_this_page")
page_url("identifier_for_this_page")

Meta tags (SEO)

To add SEO meta tags simply add a yield as follows to your layout file:

head
 = yield(:seo)

Show edit link

Feel free to make it fit as you want in your site design

- if current_admin_user && current_page
  div style="float:right"
    = link_to "Edit this page", cardboard.edit_page_path(current_page)

= nested_pages do |page, subpages|
  .indent
    = link_to(page.title, page.url) if page.in_menu?
    = subpages

or similarly with UL and LI tags

ul
  = nested_pages do |page, subpages|
    li
      = link_to(page.title, page.url) if page.in_menu?
      - if subpages
        ul= subpages

Link to a page

Use the page identifier defined in the cardboard.yml file (or see yoda)

  = link_to_page "page_identifier", class: "btn" do |page|
    "hello #{page.title}"
  end

  # or, to simply use the page title

  = link_to_page "page_identifier", class: "btn"

Abilities

You can (and should) add a can_manage_cardboard method to your user model. By default users can manage all areas of the admin panel.

def can_manage_cardboard?(area)
  case area
  when :pages
    self.admin?
  when :settings
    self.admin?
  when :resource_identifier #should be plural
    true
  else
    true
  end
end

Dashboard

You can add whatever you want on the dashboard by simply adding

views
|- cardboard
   |- dashboard
       |- index.html.slim

Customizing Cardboard

Overwrite views

You can easily change the default behavior of the app by overwriting the views. For example say you'd like to change the my account page. Simply add a views/cardboard/my_account/edit.html.slim and edit it at will.

Deploy with capistrano

namespace :cardboard do
  desc "seed the database"
  task :seed do
    run "cd #{current_path}; bundle exec rake cardboard:seed RAILS_ENV=#{rails_env}"
  end
end
after "deploy", "cardboard:seed"

License

See LICENSE.txt