A hacky way to consume WP-API content and provide it to Rails views.

wordpress_controller.rb

require 'faraday'

class WordpressController < ApplicationController

  @@wp_client = Faraday.new(url: "http://#{ENV['WP_DOMAIN']}") do |builder|
    builder.adapter Faraday.default_adapter
    builder.headers = {'Content-Type' => 'application/json'}
    builder.request  :url_encoded
  end

  def show
    res = @@wp_client.get('/wp-json/wp/v2/posts', 'filter[name]' => params[:path])

    raise ActiveRecord::RecordNotFound if res.status == 404
    raise 'Wordpress server did not respond with success' unless res.status == 200

    @wp = JSON.parse!(res.body).first

    raise ActiveRecord::RecordNotFound unless @wp

    # Replace all links that look like, for example...
    #   http://example.wpengine.com/foo
    # But not, for example...
    #   http://example.wpengine.com/wp-content
    #   http://example.wpengine.com/wp-admin
    #   etc.
    # With...
    #   /wp/foo
    #
    # WARNING: This is a hack. It just happens to work in this case.
    # A more comprehensive solution would be aware of which HTML attributes of
    # which tags it was rewriting.
    @wp['content']['rendered'].gsub! /(https?:)?\/\/#{Regexp.quote(ENV['WP_DOMAIN'])}(?!\/wp-)/, '/wp'
  end
end