Contents

class Rtml::Instruction < ActiveRecord::Base
  extend Rtml::Instruction::FollowClassMethods
  
  set_table_name 'rtml_instructions'
  serialize :arguments#, Array
  belongs_to :source, :polymorphic => true
  validates_presence_of :source, :name, :x, :y
  validates_presence_of :widget

  #has_many :instructions, :as => :source  # referencing this seems to raise Rtml is not missing constant Instruction ??
  #So I added a migration and an extra key (parent_id) and source_id and source_type aren't used for children. Whatever.
  #has_many :instructions, :class_name => 'Rtml::Instruction', :foreign_key => 'parent_id', :dependent => :destroy
  #belongs_to :parent, :foreign_key => 'parent_id', :class_name => 'Rtml::Instruction'

  # It's because of the namespace.
  has_many :instructions, :as => :source, :class_name => 'Rtml::Instruction'
  delegate :gui_configuration, :to => :widget

  def to_json(options = {})
    super(options.merge(:methods => :widget_fields))
  end

  def after_initialize
    self.arguments ||= Hash.new
  end

  def widget
    return nil unless source
    source_name = source.kind_of?(Rtml::Document) ? 'document' : source.name
    Rtml::Widgets.affecting(source_name).each do |widget|
      return widget if widget.entry_points.include?(name)
    end
    nil
  end

  def widget_name
    widget.name
  end

  def widget_fields
    gui_configuration.fields_with_inferences
  end

  def follow(source = self.source)
    raise ArgumentError, "Source is required" unless source

    src = source.send("#{name}_from_hash", arguments)
    instructions.each do |instruction|
      instruction.follow(src)
    end
  end
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
rtml-2.0.4	builtin/models/rtml/instruction.rb
rtml-2.0.3	builtin/models/rtml/instruction.rb
rtml-2.0.2	builtin/models/rtml/instruction.rb
rtml-2.0.1	builtin/models/rtml/instruction.rb
rtml-2.0.0.alpha.1	builtin/models/rtml/instruction.rb