Class: PyrRules::ActionHandler

Inherits:
Object
  • Object
show all
Defined in:
app/rules/pyr_rules/action_handler.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(event, action) ⇒ ActionHandler

Returns a new instance of ActionHandler.



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# File 'app/rules/pyr_rules/action_handler.rb', line 73

def initialize(event, action)
  @event = event
  @action = action  # Allow use of symbols or strings as keys    target = event_hash[:klazz].constantize.find event_hash[:id].to_i rescue nil
  @context = PyrRules::Rule.rule_context(@event)
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

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

Our context methods will be accessible through here



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# File 'app/rules/pyr_rules/action_handler.rb', line 61

def method_missing(meth, *args, &block)
  mapping_type = @action.needs[meth]
  if mapping_type
    rule_field = @action.lookup_context_mapping(meth, mapping_type)[0]
    value = eval rule_field, @context.get_binding rescue nil
    return value
  end
  super
end

Instance Attribute Details

#action ⇒ Object

Returns the value of attribute action.



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# File 'app/rules/pyr_rules/action_handler.rb', line 72

def action
  @action
end

#event ⇒ Object

Returns the value of attribute event.



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# File 'app/rules/pyr_rules/action_handler.rb', line 72

def event
  @event
end

Class Method Details

._add_needs_and_recurse(klazz) ⇒ Object 



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# File 'app/rules/pyr_rules/action_handler.rb', line 51

def self._add_needs_and_recurse(klazz)
  klazz.subclasses.each do |c| 
    @@action_configuration[c] ||= {}
    @@action_configuration[c][:needs] = @@needs[c]
    @@action_configuration[c][:templates] = @@templates[c]
    _add_needs_and_recurse(c)
  end
end

.action_listing ⇒ Object 



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# File 'app/rules/pyr_rules/action_handler.rb', line 46

def self.action_listing
  configuration # force load
  @@action_configuration.keys
end

.configuration ⇒ Object

def self.templates

@@templates[self]

end



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# File 'app/rules/pyr_rules/action_handler.rb', line 34

def self.configuration
  return @@action_configuration[self] unless @@action_configuration.empty?
  #if Rails.env.development?
      Dir["#{Rails.root}/../**/*/app/**/action_handler/*.rb"].each do |p| 
        puts "require_dependency #{p}" 
        require_dependency p
      end
  #end
  _add_needs_and_recurse(PyrRules::ActionHandler)
  @@action_configuration[self]
end

.needs(name, type = :string) ⇒ Object 



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# File 'app/rules/pyr_rules/action_handler.rb', line 10

def self.needs(name, type=:string)
  @@needs[self] ||= {}
  @@needs[self][name] = type
end

.reload_configuration ⇒ Object 



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# File 'app/rules/pyr_rules/action_handler.rb', line 24

def self.reload_configuration
  puts "Reloading ActionHandler configuration"
  @@action_configuration = {}
  configuration
  @@action_configuration.keys
end

.template(name) ⇒ Object

def self.needs_map

@@needs[self]

end



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# File 'app/rules/pyr_rules/action_handler.rb', line 19

def self.template(name)
  @@templates[self] ||= {}
  @@templates[self][name] = (block_given?) ? yield : ""
end

Instance Method Details

#eval_template(template_name) ⇒ Object 



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# File 'app/rules/pyr_rules/action_handler.rb', line 83

def eval_template(template_name)
  template_name = template_name.to_s
  puts "DEBUG: Looking up #{template_name} from #{@action.template}"
  t = @action.template_body(template_name)
  interpolated_fields = @action.template_fields(template_name)
  interpolated_fields.each do |f|
    t.gsub!("{#{f}}","\#{#{f}}")
  end
  puts "DEBUG: Using #{t}"
  eval '"' + t + '"'
end

#handle ⇒ Object 



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# File 'app/rules/pyr_rules/action_handler.rb', line 79

def handle
  puts "\n\n------- #{self.class.name} ------ \n\nHANDLE called for #{@event.inspect}  \n\n---- #{@action.inspect}\n\n"
end