LiquidMarkdown

• Combines Liquid and extended Markdown (via Kramdown) for customer-safe templating of Rails pages and emails
• Integrates with Panoramic to add ActiveRecord database storage of templates for editing
• Generates both plain text and html parts of an email from a single template (replacing other markdown email gems)
• Supports html layouts for emails (unlike other markdown email gems)

Installation

Add this line to your application's Gemfile:

gem 'liquid_markdown', '~> 0.2.2'
# If you want to use database template
gem 'panoramic'

And then execute:

$ bundle

Or install it yourself as:

$ gem install liquid_markdown

Usage

You can use liquid_markdown in your mailer with .liqmd file extension

Using Rails mailer and view template

# app/mailers/user_mailer.rb
class UserMailer < ApplicationMailer
  def confirmation(user)
    @user = user

    mail(to: @user.email, subject: 'liquid markdown layout') do |format|
      format.html
      format.text
    end
  end
end

# app/views/user_mailer/confirmation.liqmd

# Hello {{user.email}},

You are now subscribed to our daily newsletter.

Thanks
------
ABC Org.

Using panoramic for database template

Please read full documentation in Panoramic

• Add following line to your Gemfile

gem 'panoramic'

• Your model should have the following fields: body:text, path:string, locale:string, handler:string, partial:boolean, format:string

• Add below line to your Model

require 'liquid_markdown/resolver' # required

class TemplateStorage < ActiveRecord::Base
  store_templates

  # required
  def self.resolver(options={})
    LiquidMarkdown::Resolver.using self, options
  end
end

Use liqmd handler in your TemplateStorage

TemplateStorage.create(
  body: "# Hello {{user.email}}, \n\n You have successfully subscribed to our
  daily newsletter.",
  path: 'user_mailer/confirmation',
  handler: 'liqmd',
  format: 'html'
)

• To use Panoramic resolver in your mailer

class UserMailer < ActionMailer::Base
  prepend_view_path TemplateStorage.resolver

  def confirmation(user)
    @user = user

    mail(
      from: "[email protected]",
      to: @user.email,
      subject: "Confirmation Link",
      template_name: @user.template_name
    )
  end
end

Manually

We can compile Liquid templates into html and plain text version.

lm = LiquidMarkdown::Render.new("Hello {{user.profile.name}}!", {user: {profile: {name: 'Bob'}}})
lm.html # => "<p>Hello Bob!</p>"
lm.text # => "Hello Bob!"

lm = LiquidMarkdown::Render.new("# my first heading") 
lm.html # => "<h1>my first heading</h1>"
lm.text # => "my first heading"

We can combine both Liquid and Markdown together, Liquid will get compiled first and then Markdown will get compiled

lm = LiquidMarkdown::Render.new("# Hello {{username | upcase}}", {username: 'Admin'})
lm.html # => "<h1>Hello ADMIN</h1>"
lm.text # => "Hello ADMIN"

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake spec 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 bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

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

Credits

• https://github.com/Shopify/liquid
• https://github.com/gettalong/kramdown
• https://github.com/andreapavoni/panoramic
• https://github.com/schneems/maildown
• https://github.com/fnando/actionmailer-markdown

License

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