Class: GraphStarter::Asset

Inherits:
Object
  • Object
show all
Includes:
Authorizable, Neo4j::ActiveNode, Neo4j::Timestamps
Defined in:
app/models/graph_starter/asset.rb

Defined Under Namespace

Classes: SecretSauceRecommendation

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Authorizable

#set_access_levels

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method_name, *args, &block) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 203

def method_missing(method_name, *args, &block)
  if [:name, :title].include?(method_name.to_sym)
    self.class.send(:define_method, method_name) do
      read_attribute(self.class.name_property)
    end

    send(method_name)
  elsif method_name.to_sym == :body
    if self.class.body_property
      self.class.send(:define_method, method_name) do
        read_attribute(self.class.body_property)
      end

      send(method_name)
    end
  else
    super
  end
end

Class Method Details

.authorized_associations ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 374

def self.authorized_associations
  @authorized_associations ||= associations.except(*Asset.associations.keys + [:images, :image])
end

.authorized_for(user) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 308

def self.authorized_for(user)
  require 'graph_starter/query_authorizer'

  query, associations = if category_associations.size > 0
                          query = all(:asset).query

                          last_associations_var = "categories#{category_associations.size - 1}"
                          query = category_associations.each_with_index.inject(query) do |query, (association_name, i)|
                            category_association = self.associations[association_name]
                            clause = "(asset)#{category_association.arrow_cypher}(category:#{category_association.target_class})"

                            query.optional_match(clause).with(:asset, "#{"categories#{i-1} +" if i > 0} collect(category) AS categories#{i}")
                          end
                            .with("asset, CASE #{last_associations_var} WHEN [] THEN [null] ELSE #{last_associations_var} END AS #{last_associations_var}")
                            .unwind(category: last_associations_var)

                          [query,
                           [:asset, :category]]
                        else
                          [all(:asset),
                           :asset]
                        end

  ::GraphStarter::QueryAuthorizer.new(query, asset: GraphStarter.configuration.scope_filters[self.name.to_sym])
    .authorized_query(associations, user)
    .with('DISTINCT asset AS asset, level')
    .break
    .proxy_as(self, :asset)
end

.authorized_properties(user) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 338

def self.authorized_properties(user)
  authorized_properties_query(user).pluck(:property)
end

.authorized_properties_and_levels(user) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 342

def self.authorized_properties_and_levels(user)
  authorized_properties_query(user).pluck(:property, :level)
end

.authorized_properties_query(user) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 346

def self.authorized_properties_query(user)
  query = property_name_and_uuid_and_ruby_type_query
          .merge(model: {Model: {name: name}})
          .on_create_set(model: {private: false})
          .break
          .merge('model-[:HAS_PROPERTY]->(property:Property {name: property_name})')
          .on_create_set(property: {private: false})
          .on_create_set('property.uuid = uuid, property.ruby_type = ruby_type')
          .with(:property)

  ::GraphStarter::Property # rubocop:disable Lint/Void
  QueryAuthorizer.new(query).authorized_query(:property, user)
end

.body_property(property_name = nil) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 157

def self.body_property(property_name = nil)
  if property_name.nil?
    @body_property
  else
    fail "Cannot declare body_property twice" if @body_property.present?
    name = property_name.to_sym
    fail ArgumentError, "Property #{name} is not defined" if !attributes.key?(name.to_s)
    @body_property = name
  end
end

.body_property?(property_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/graph_starter/asset.rb', line 168

def self.body_property?(property_name)
  @body_property && @body_property.to_sym == property_name.to_sym
end

.category_associations(*association_names) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 71

def self.category_associations(*association_names)
  if association_names.empty?
    @category_associations || []
  else
    fail "Cannot declare category_associations twice" if @category_associations.present?
    names = association_names.map(&:to_sym)
    bad_names = names.select {|name| associations[name].nil? }
    fail ArgumentError, "Associations #{bad_names.join(', ')} is not defined" if !bad_names.empty?

    @category_associations = names
  end
end

.default_body_property ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 172

def self.default_body_property
  if @body_property.nil? && !attributes.key?('body')
    fail "No body_property defined for #{self.name}!"
  end

  @body_property
end

.default_name_property ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 143

def self.default_name_property
  (%w(name title) & attributes.keys)[0].tap do |property|
    if property.nil?
      fail "No name_property defined for #{self.name}!"
    end
  end
end

.descendants ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 295

def self.descendants
  Rails.application.eager_load! if Rails.env == 'development'
  Neo4j::ActiveNode::Labels._wrapped_classes.select { |klass| klass < self }
end

.display_properties(*property_names) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 181

def self.display_properties(*property_names)
  if property_names.empty?
    @display_properties
  else
    @display_properties = property_names.map(&:to_sym)
  end
end

.display_property?(property_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/graph_starter/asset.rb', line 189

def self.display_property?(property_name)
  display_properties.nil? || display_properties.include?(property_name.to_sym)
end

.enumerable_property(property_name, values) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 95

def self.enumerable_property(property_name, values)
  fail "values needs to be an Array, was #{values.inspect}" if !values.is_a?(Array)

  validates :status, inclusion: {in: values}

  enumerable_property_values[self.name.to_sym] ||= {}
  enumerable_property_values[self.name.to_sym][property_name.to_sym] ||= values
end

.enumerable_property_values ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 109

def self.enumerable_property_values
  @enumerable_property_values ||= {}
end

.enumerable_property_values_for(property_name) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 104

def self.enumerable_property_values_for(property_name)
  enumerable_property_values[self.name.to_sym] && 
    enumerable_property_values[self.name.to_sym][property_name.to_sym]
end

.for_query(query) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 232

def self.for_query(query)
  where_clause = self.search_properties.map do |property|
    fail "Invalid property: #{property}" if attributes[property].nil?
    "asset.#{property} =~ {query}"
  end.join(' OR ')

  query_string = query.strip.gsub(/\s+/, '.*')
  all(:asset).where(where_clause).params(query: "(?i).*#{query_string}.*")
end

.has_image ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 30

def self.has_image
  @has_image = true
  has_one :out, :image, type: :HAS_IMAGE, model_class: '::GraphStarter::Image'
end

.has_image? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/graph_starter/asset.rb', line 39

def self.has_image?
  !!@has_image
end

.has_images ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 25

def self.has_images
  @has_images = true
  has_many :out, :images, type: :HAS_IMAGE, model_class: '::GraphStarter::Image'
end

.has_images? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/graph_starter/asset.rb', line 35

def self.has_images?
  !!@has_images
end

.icon_class ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 378

def self.icon_class
  GraphStarter.configuration.icon_classes[self.name.to_sym]
end

.image_association ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 43

def self.image_association
  if has_images?
    :images
  elsif has_image?
    :image
  end
end

.model_slug ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 300

def self.model_slug
  name.tableize
end

.name_property(property_name = nil) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 123

def self.name_property(property_name = nil)
  if property_name.nil?
    name_property(default_name_property) if @name_property.nil?

    @name_property
  else
    fail "Cannot declare name_property twice" if @name_property.present?
    name = property_name.to_sym
    fail ArgumentError, "Property #{name} is not defined" if !attributes.key?(name.to_s)
    @name_property = name

    validates name, presence: true
    index name
  end
end

.name_property?(property_name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/graph_starter/asset.rb', line 139

def self.name_property?(property_name)
  @name_property && @name_property.to_sym == property_name.to_sym
end

.properties ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 304

def self.properties
  attributes.keys - Asset.attributes.keys
end

.property_name_and_uuid_and_ruby_type_query ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 360

def self.property_name_and_uuid_and_ruby_type_query
  properties_and_uuids_and_ruby_types = properties.map do |property|
    type = self.attributes[property][:type]
    type = type.name if type.is_a?(Class)
    [property, SecureRandom.uuid, type]
  end

  Neo4j::Session.current.query
    .with('{array} AS array')
    .unwind('array AS row')
    .params(array: properties_and_uuids_and_ruby_types)
    .with('row[0] AS property_name, row[1] AS uuid, row[2] AS ruby_type')
end

.rated ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 114

def self.rated
  @rated = true
end

.rated? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'app/models/graph_starter/asset.rb', line 118

def self.rated?
  !!@rated
end

.search_properties(*array) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 224

def self.search_properties(*array)
  if array.empty?
    @search_properties || [name_property]
  else
    @search_properties = array
  end
end

Instance Method Details

#as_json(options = {}) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 266

def as_json(options = {})
  data = {
    id: id,
    title: title,
    name: title,
    model_slug: self.class.model_slug,
    summary: summary,
    categories: categories
  }.tap do |result|
    result[:image_urls] = image_array.map(&:source_url) if image_array
    result[:images] = images.map {|image| image.source.url } if self.class.has_images?
    result[:image] = image.source_url if self.class.has_image? && image
  end

  options[:root] ? {self.class.model_slug.singularize => data} : data
end

#categories ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 84

def categories
  if self.class.category_associations
    self.class.category_associations.flat_map do |category_association|
      send(category_association)
    end.compact
  else
    []
  end
end

#first_image ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 51

def first_image
  if self.class.has_images?
    images.first
  elsif self.class.has_image?
    image
  end
end

#first_image_source_url ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 67

def first_image_source_url
  first_image && first_image.source_url
end

#image_array ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 59

def image_array
  if self.class.has_images?
    images.to_a
  elsif self.class.has_image?
    [image].compact
  end
end

#rating_for(user) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 199

def rating_for(user)
  rated_by_user(nil, :rating).where(uuid: user.uuid).pluck(:rating)[0]
end

#rating_level_for(user) ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 194

def rating_level_for(user)
  rating = rating_for(user)
  rating && rating.level
end

#safe_title ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 151

def safe_title
  sanitizer = Rails::Html::WhiteListSanitizer.new

  sanitizer.sanitize(title, tags: %w(b em i strong)).try(:html_safe)
end

#secret_sauce_recommendations ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 242

def secret_sauce_recommendations
  user_class = GraphStarter.configuration.user_class
  return [] if user_class.nil? # Should fix this later

  user_class = (user_class.is_a?(Class) ? user_class : user_class.to_s.constantize)
  user_label = user_class.mapped_label_name

  query_as(:source)
    .match('source-[:HAS_CATEGORY]->(category:Category)<-[:HAS_CATEGORY]-(asset:Asset)')
    .break
    .optional_match("source<-[:CREATED]-(creator:#{user_label})-[:CREATED]->asset")
    .break
    .optional_match("source<-[:VIEWED]-(viewer:#{user_label})-[:VIEWED]->asset")
    .limit(5)
    .order('score DESC')
    .pluck(
      :asset,
      '(count(category) * 2) +
       (count(creator) * 4) +
       (count(viewer) * 0.1) AS score').map do |other_asset, score|
    SecretSauceRecommendation.new(other_asset, score)
  end
end

#total_view_count ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 287

def total_view_count
  views.map(&:count).sum
end

#unique_view_count ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 291

def unique_view_count
  views.size
end

#views ⇒ Object 



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# File 'app/models/graph_starter/asset.rb', line 283

def views
  @views ||= viewer_sessions.rels
end