store all data in memory in preperarion for shallow routes

app/models/merged/card.rb

@@ -4,13 +4,21 @@ module Merged
     include ActiveModel::Conversion
     extend  ActiveModel::Naming
 
+    cattr_reader :all
+    @@all = {}
+
     attr_reader  :content  , :section
 
     def initialize(section , card_data)
       @section = section
       raise "No data #{card_data}" unless card_data.is_a?(Hash)
       @content = card_data
+      raise "No id #{card_data}" unless id.is_a?(String)
+      @@all[self.id] = self
     end
 
+    def id
+      @content['id']
+    end
   end
 end

app/models/merged/image.rb

@@ -4,27 +4,27 @@ module Merged
     include ActiveModel::Conversion
     extend  ActiveModel::Naming
 
-    @@images = {}
+    cattr_reader :all
+    @@all = {}
+
+    def self.load_images()
+      glob = Rails.root.join Image.asset_root + "/*.*"
+      Dir[glob].each do |f|
+        file = f.split("/").last
+        Image.new( file )
+      end
+    end
+
 
     attr_reader :name , :type , :size , :created_at , :updated_at
 
     def initialize(filename)
-      puts "New Image #{filename}"
       @name , @type = filename.split(".")
       file = File.new(Rails.root.join(Image.asset_root,filename))
       @created_at = file.birthtime
       @updated_at = file.ctime
       @size = (file.size/1024).to_i
-    end
-
-    def self.all
-      return @@images unless @@images.empty?
-      dir = Rails.root.join Image.asset_root + "/*.*"
-      Dir[dir].each do |f|
-        file = f.split("/").last
-        self.add( file )
-      end
-      @@images
+      @@all[@name] = self
     end
 
     #save an io with given name (without ending, that is taken from io)
@@ -39,17 +39,12 @@ module Merged
     end
 
     def self.asset_root
-      "app/assets/images/" + root
+      "app/assets/images/" + image_root
     end
 
-    def self.root
+    def self.image_root
       "cms"
     end
 
-    private
-    def self.add(filename)
-      key = filename.split(".").first
-      @@images[key] = Image.new(filename)
-    end
   end
 end

app/models/merged/page.rb

@@ -4,28 +4,34 @@ module Merged
     include ActiveModel::Conversion
     extend  ActiveModel::Naming
 
-    @@root = "cms"
-    @@files = Set.new Dir.new(Rails.root.join(@@root)).children
+    # could be config options
+    def self.cms_root
+      "cms"
+    end
 
-    attr_reader :name , :content
+    cattr_reader :all
+    @@all = {}
+
+    def self.load_pages()
+      files = Set.new Dir.new(Rails.root.join(Page.cms_root)).children
+      files.each do |file|
+        page = Page.new(file)
+      end
+    end
+
+    attr_reader :name , :content , :sections
 
     alias :id  :name
 
-    def persisted?
-      false
-    end
-
-    def initialize file_name
+    def initialize( file_name )
       @name = file_name.split(".").first
-      @content = YAML.load_file(Rails.root.join(@@root , file_name))
-    end
-
-    def sections
-      sections = []
+      @content = YAML.load_file(Rails.root.join(Page.cms_root , file_name))
+      @sections = {}
       @content.each_with_index do |section_data, index|
-        sections << Section.new(self , index,  section_data)
+        section = Section.new(self , index,  section_data)
+        @sections[ section.id] = section
       end
-      sections
+      @@all[@name] = self
     end
 
     def find_section(section_id)
@@ -48,16 +54,12 @@ module Merged
     end
 
     def save
-      file_name = Rails.root.join(@@root , name + ".yaml")
+      file_name = Rails.root.join(Page.cms_root , name + ".yaml")
       File.write( file_name , @content.to_yaml)
     end
 
-    def self.all
-      @@files.collect{ |file| Page.new(file) }
-    end
-
     def self.find(name)
-      Page.new(name + ".yaml")
+      @@all[name]
     end
 
   end

app/models/merged/section.rb

@@ -4,11 +4,10 @@ module Merged
     include ActiveModel::Conversion
     extend  ActiveModel::Naming
 
-    attr_reader :name , :content , :page , :index
+    cattr_reader :all
+    @@all = {}
 
-    def persisted?
-      false
-    end
+    attr_reader :name , :content , :page , :index , :cards
 
     def initialize(page , index , section_data)
       @page = page
@@ -16,8 +15,17 @@ module Merged
       raise "No hash #{section_data}" unless section_data.is_a?(Hash)
       @index = index
       @content = section_data
+      @@all[self.id] = self
+      @cards = {}
+      element = @content["cards"]
+      return if element.nil?
+      element.each do|card_content|
+        card = Card.new(self , card_content)
+        @cards[card.id] = card
+      end
     end
 
+
     def update(key , value)
       return if key == "id" #not updating that
       if(! @content[key].nil? )
@@ -28,12 +36,6 @@ module Merged
       @content[key] = value
     end
 
-    def cards
-      element = @content["cards"]
-      return [] if element.nil?
-      element.collect{|card_content| Card.new(self , card_content)}
-    end
-
     def template
       @content["template"]
     end
@@ -49,10 +51,6 @@ module Merged
       raise "Called"
     end
 
-    def self.all
-      @page.sections
-    end
-
     def self.find(page_name , section_id)
       raise "buggy"
       Page.new(name + ".yaml")

lib/merged.rb

@@ -2,5 +2,5 @@ require "merged/version"
 require "merged/engine"
 
 module Merged
-  # Your code goes here...
+
 end

lib/merged/engine.rb

@@ -7,6 +7,13 @@ module Merged
       add_image_assets(app.config , "card_preview")
     end
 
+    initializer "after_initialize" do |app|
+      ActiveSupport::Reloader.to_prepare do
+        Merged::Page.load_pages()
+        Image.load_images()
+      end
+    end
+
     private
     def add_image_assets(config ,  sub_dir )
       dir = Dir.new(Engine.root.join("app/assets/images/merged/" , sub_dir))

spec/models/merged/card_spec.rb

@@ -2,6 +2,13 @@ require 'rails_helper'
 
 module Merged
   RSpec.describe Card, type: :model do
-    pending "add some examples to (or delete) #{__FILE__}"
+    let(:first) {Card.all.values.first}
+
+    it "has Card.all" do
+      expect(Card.all.class).to be Hash
+    end
+    it "has cards" do
+      expect(first.class).to be Card
+    end
   end
 end

spec/models/merged/image_spec.rb

@@ -0,0 +1,17 @@
+require 'rails_helper'
+
+module Merged
+  RSpec.describe Image, type: :model do
+    let(:first) {Image.all.values.first}
+
+    it "has Pages.all" do
+      expect(Image.all.class).to be Hash
+    end
+    it "has image" do
+      expect(first.class).to be Image
+    end
+    it "image has name" do
+      expect(first.name).to eq "large"
+    end
+  end
+end

spec/models/merged/page_spec.rb

@@ -0,0 +1,17 @@
+require 'rails_helper'
+
+module Merged
+  RSpec.describe Page, type: :model do
+    let(:index) {Page.find('index')}
+
+    it "has Pages.all" do
+      expect(Page.all.class).to be Hash
+    end
+    it "has index page" do
+      expect(index.class).to be Page
+    end
+    it "has sections" do
+      expect(index.sections.length).to be 1
+    end
+  end
+end

spec/models/merged/section_spec.rb

@@ -0,0 +1,17 @@
+require 'rails_helper'
+
+module Merged
+  RSpec.describe Section, type: :model do
+    let(:first) {Section.all.values.first}
+
+    it "has Sections.all" do
+      expect(Section.all.class).to be Hash
+    end
+    it "has index page" do
+      expect(first.class).to be Section
+    end
+    it "has sections" do
+      expect(first.cards.length).to be 2
+    end
+  end
+end

spec/rails_helper.rb

@@ -1,7 +1,7 @@
 # This file is copied to spec/ when you run 'rails generate rspec:install'
 require 'spec_helper'
 ENV['RAILS_ENV'] ||= 'test'
-require_relative '../config/environment'
+require_relative '../test/dummy/config/environment'
 # Prevent database truncation if the environment is production
 abort("The Rails environment is running in production mode!") if Rails.env.production?
 require 'rspec/rails'

test/dummy/cms/index.yaml

@@ -0,0 +1,24 @@
+---
+- template: section_2_col
+  header: Sizes and kinds
+  text: We offer different sizes and different types of studios for artists. There
+    large and small rooms, with more or less light, also rooms with tiles for wet-work.
+    The rooms are in the old hospital wings, so most are old patient rooms, but there
+    are plenty of others too. Prices do not include electricity or vat, but do include
+    the use of common spaces, see below.
+  image:
+  id: b7d16d4da518bafd3d39
+  card_template: card_full_image
+  cards:
+  - header: Standard
+    text: This is the standard 2 patient room. They are mostly towards the south,
+      so may have great, or too much light, depending on how you see it. The size
+      is about 3x5, cost 120e.
+    image: standard
+    id: b7d16d4da618bafd3d39
+  - header: Large
+    text: The old 4 patient rooms are basically twice the size as the small. They
+      are large enough to be shared. The size is about 30m2 and the cost 240e. Like
+      the small rooms these are south facing, very light.
+    image: large
+    id: b7d76d4da518bafd3d39