Module: ActiveHistory::Adapter::ActiveRecord

Extended by:
ActiveSupport::Concern
Defined in:
lib/activehistory/adapters/active_record.rb

Instance Method Summary collapse

Instance Method Details

#activehistory_association_udpated(reflection, id, added: [], removed: [], timestamp: nil, type: :update) ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 169

def activehistory_association_udpated(reflection, id, added: [], removed: [], timestamp: nil, type: :update)
  if inverse_of = activehistory_tracking.dig(:habtm_model, reflection.name, :inverse_of)
    inverse_of = reflection.klass.reflect_on_association(inverse_of)
  else
    inverse_of = reflection.inverse_of
  end

  if inverse_of.nil?
    puts "NO INVERSE for #{self.class}.#{reflection.name}!!!"
    return
  end
  
  model_name = reflection.klass.base_class.model_name.name
  
  action = activehistory_event.action_for("#{model_name}/#{id}") || activehistory_event.action!({
    type: type,
    subject: "#{model_name}/#{id}",
    timestamp: timestamp# || Time.now
  })
  
  action.diff ||= {}
  if inverse_of.collection? || activehistory_tracking[:habtm_model]
    diff_key = "#{inverse_of.name.to_s.singularize}_ids"
    action.diff[diff_key] ||= [[], []]
    action.diff[diff_key][0] |= removed
    action.diff[diff_key][1] |= added
  else
    diff_key = "#{inverse_of.name.to_s.singularize}_id"
    action.diff[diff_key] ||= [removed.first, added.first]
  end
end

#activehistory_complete ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 70

def activehistory_complete
  @activehistory_timestamp = nil
  if instance_variable_defined?(:@activehistory_finish) && @activehistory_finish && activehistory_tracking
    activehistory_event.save! if activehistory_event
    Thread.current[:activehistory_event] = nil
    @activehistory_timestamp = nil
  end
end

#activehistory_event ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 85

def activehistory_event
  case Thread.current[:activehistory_event]
  when ActiveHistory::Event
    Thread.current[:activehistory_event]
  when Hash
    Thread.current[:activehistory_event][:timestamp] ||= @activehistory_timestamp
    Thread.current[:activehistory_event] = ActiveHistory::Event.new(Thread.current[:activehistory_event])
  when Fixnum
  else
    Thread.current[:activehistory_event] = ActiveHistory::Event.new(timestamp: @activehistory_timestamp)
  end
end

#activehistory_id ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 55

def activehistory_id
  "#{self.class.name}/#{id}"
end

#activehistory_start ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 63

def activehistory_start
  if activehistory_tracking && !instance_variable_defined?(:@activehistory_finish)
    @activehistory_finish = !Thread.current[:activehistory_event]
  end
  @activehistory_timestamp = Time.now.utc
end

#activehistory_timestamp ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 59

def activehistory_timestamp
  @activehistory_timestamp ||= Time.now.utc
end

#activehistory_track(type) ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 98

def activehistory_track(type)
  return if !activehistory_tracking
  
  if type == :create || type == :update
    diff = self.changes.select { |k,v| !activehistory_tracking[:exclude].include?(k.to_sym) }
    if type == :create
      self.class.columns.each do |column|
        if !diff[column.name] && !activehistory_tracking[:exclude].include?(column.name.to_sym) && column.default != self.attributes[column.name]
          diff[column.name] = [nil, self.attributes[column.name]]
        end
      end
    end
  elsif type == :destroy
    diff = self.attributes.select { |k| !activehistory_tracking[:exclude].include?(k.to_sym) }.map { |k, i| [k, [i, nil]] }.to_h
  end
  
  return if type == :update && diff.size == 0
  
  if !activehistory_tracking[:habtm_model]
    activehistory_event.action!({
      type: type,
      subject: self.activehistory_id,
      diff: diff,
      timestamp: @activehistory_timestamp
    })
  end
  
  self._reflections.each do |key, reflection|
    foreign_key = activehistory_tracking.dig(:habtm_model, reflection.name, :foreign_key) || reflection.foreign_key

    if areflection = self.class.reflect_on_association(reflection.name)
      if areflection.macro == :has_and_belongs_to_many && type == :create
        self.send("#{areflection.name.to_s.singularize}_ids").each do |fid|
          next unless fid
          activehistory_association_udpated(areflection, fid, added: [diff['id'][1]], timestamp: activehistory_timestamp)
          activehistory_association_udpated(areflection.klass.reflect_on_association(areflection.options[:inverse_of]), diff['id'][1], added: [fid], timestamp: activehistory_timestamp, type: :create)
        end
      elsif areflection.macro == :has_and_belongs_to_many && type == :destroy
        self.send("#{areflection.name.to_s.singularize}_ids").each do |fid|
          activehistory_association_udpated(areflection, fid, removed: [diff['id'][0]], timestamp: activehistory_timestamp, type: :update)
          activehistory_association_udpated(areflection.klass.reflect_on_association(areflection.options[:inverse_of]), diff['id'][0], removed: [fid], timestamp: activehistory_timestamp, type: :update)
        end
      end
    end
    
    next unless reflection.macro == :belongs_to && (type == :destroy || diff.has_key?(foreign_key))
    
    case type
    when :create
      old_id = nil
      new_id = diff[foreign_key][1]
    when :destroy
      old_id = diff[foreign_key][0]
      new_id = nil
    else
      old_id = diff[foreign_key][0]
      new_id = diff[foreign_key][1]
    end
    
    relation_id = self.id || diff.find { |k, v| k != foreign_key }[1][1]
    
    if reflection.polymorphic?
    else
      activehistory_association_udpated(reflection, old_id, removed: [relation_id], timestamp: activehistory_timestamp) if old_id
      activehistory_association_udpated(reflection, new_id, added:   [relation_id], timestamp: activehistory_timestamp) if new_id
    end
    
  end
  
end

#activehistory_tracking ⇒ Object 



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# File 'lib/activehistory/adapters/active_record.rb', line 79

def activehistory_tracking
  if ActiveHistory.configured? && self.class.instance_variable_defined?(:@activehistory)
    self.class.instance_variable_get(:@activehistory)
  end
end