Class: ActiveTouch::DefineTouch

Inherits:
Object
  • Object
show all
Defined in:
lib/active_touch/define_touch.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(klass, association, options) ⇒ DefineTouch

Returns a new instance of DefineTouch.



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# File 'lib/active_touch/define_touch.rb', line 10

def initialize(klass, association, options)
  @klass = klass
  @association = association
  @options = default_options.merge(options)
  @before_commit_method = "touch_#{SecureRandom.uuid}"
  @after_commit_method = "touch_#{SecureRandom.uuid}"
  @before_destroy_method = "touch_#{SecureRandom.uuid}"
end

Class Method Details

.on(klass, association, options) ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 4

def self.on(klass, association, options)
  new(klass, association, options).define if ActiveRecord::Base.connection.data_source_exists?(klass.table_name)
rescue ActiveRecord::NoDatabaseError
  # do nothing
end

Instance Method Details

#add_active_record_callback(event, method, args = {}) ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 101

def add_active_record_callback(event, method, args = {})
  @klass.send(event) { send(method, args) }
end

#add_to_network ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 105

def add_to_network
  touched = @options[:class_name] || @association.to_s.camelize
  ActiveTouch.network.add_touch(@klass.to_s, touched, @options[:watch])
end

#default_options ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 110

def default_options
  {
      touch_in_transaction: ActiveTouch.configuration.touch_in_transaction,
      async: ActiveTouch.configuration.async,
      watch: @klass.column_names.map(&:to_sym) - ActiveTouch.configuration.ignored_attributes,
      after_touch: nil,
      if: Proc.new { true },
      unless: Proc.new { false },
      touch_updates: ActiveTouch.configuration.touch_updates
  }
end

#define ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 19

def define
  if @options[:touch_in_transaction]
    define_before_commit_method
    add_active_record_callback(:before_commit, @before_commit_method)
  end

  if !@options[:touch_in_transaction] || !@options[:after_touch].nil?
    define_after_commit_method
    add_active_record_callback(:after_commit, @after_commit_method)
  end

  define_before_destroy
  add_active_record_callback(:before_destroy, @before_destroy_method, prepend: true)

  add_to_network
end

#define_after_commit_method ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 52

def define_after_commit_method
  association = @association
  options = @options

  @klass.send :define_method, @after_commit_method do |*args|
    changed_attributes = self.previous_changes.keys.map(&:to_sym)
    watched_changes = (options[:watch] & changed_attributes)

    # watched values changed and conditional procs evaluate to true
    if watched_changes.any? && options[:if].call(self) && !options[:unless].call(self)
      Rails.logger.debug "Touch After Commit: #{self.class}(#{self.id}) => #{association} due to changes in #{watched_changes}"

      if options[:async]
        TouchJob
            .set(queue: ActiveTouch.configuration.queue)
            .perform_later(self, association.to_s, {
                after_touch: options[:after_touch].to_s,
                is_destroy: false,
                is_touched: options[:touch_in_transaction],
                touch_updates: options[:touch_updates]
            })

      else
        TouchJob.perform_now(self, association.to_s, {
            after_touch: options[:after_touch].to_s,
            is_destroy: false,
            is_touched: options[:touch_in_transaction],
            touch_updates: options[:touch_updates]
        })
      end

    end
  end
end

#define_before_commit_method ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 36

def define_before_commit_method
  association = @association
  options = @options

  @klass.send :define_method, @before_commit_method do |*args|
    changed_attributes = self.previous_changes.keys.map(&:to_sym)
    watched_changes = (options[:watch] & changed_attributes)

    # watched values changed and conditional procs evaluate to true
    if watched_changes.any? && options[:if].call(self) && !options[:unless].call(self)
      Rails.logger.debug "Touch Before Commit: #{self.class}(#{self.id}) => #{association} due to changes in #{watched_changes}"
      TouchJob.perform_now(self, association.to_s, touch_updates: options[:touch_updates])
    end
  end
end

#define_before_destroy ⇒ Object 



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# File 'lib/active_touch/define_touch.rb', line 87

def define_before_destroy
  association = @association
  options = @options

  @klass.send :define_method, @before_destroy_method do |*args|
    Rails.logger.debug "Touch Before Destroy: #{self.class}(#{self.id}) => #{association} due to destroy"
    TouchJob.perform_now(self, association.to_s, {
        after_touch: options[:after_touch].to_s,
        is_destroy: true,
        touch_updates: options[:touch_updates]
    })
  end
end