Class: Microscope::InstanceMethod::DateInstanceMethod

Inherits:
Microscope::InstanceMethod show all
Defined in:
lib/microscope/instance_method/date_instance_method.rb

Instance Attribute Summary

Attributes inherited from Microscope::InstanceMethod

#field, #model

Instance Method Summary collapse

Methods inherited from Microscope::InstanceMethod

#cropped_field, inject_instance_methods, past_participle_to_infinitive, value_to_boolean

Constructor Details

#initialize(*args) ⇒ DateInstanceMethod

Returns a new instance of DateInstanceMethod.



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# File 'lib/microscope/instance_method/date_instance_method.rb', line 4

def initialize(*args)
  super

  @now = 'Date.today'
  @cropped_field_regex = /_on$/
end

Instance Method Details

#apply ⇒ Object 



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# File 'lib/microscope/instance_method/date_instance_method.rb', line 11

def apply
  return unless @field_name =~ @cropped_field_regex

  cropped_field = field.name.gsub(@cropped_field_regex, '')
  infinitive_verb = self.class.past_participle_to_infinitive(cropped_field)

  model.class_eval <<-RUBY, __FILE__, __LINE__ + 1
    define_method "#{cropped_field}?" do
      value = send("#{field.name}")
      !value.nil? && value <= #{@now}
    end

    define_method "#{cropped_field}=" do |value|
      if Microscope::InstanceMethod.value_to_boolean(value)
        self.#{field.name} ||= #{@now}
      else
        self.#{field.name} = nil
      end
    end

    define_method "not_#{cropped_field}?" do
      !#{cropped_field}?
    end

    define_method "#{infinitive_verb}!" do
      send("#{field.name}=", #{@now})
      save!
    end
  RUBY
end