Module: Cms::Behaviors::Attaching::InstanceMethods

Defined in:
lib/cms/behaviors/attaching.rb

Instance Method Summary collapse

Instance Method Details

#after_as_of_versionObject

Version Callback - Reconstruct this object exactly as it was as of a particularly version Called after the object is 'reset' to the specific version in question.



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# File 'lib/cms/behaviors/attaching.rb', line 277

def after_as_of_version()
  @attachments_as_of = self.class.attachments_as_of_version(version, self)


  # Override #attachments to return the original attachments for the current version.
  metaclass = class << self;
    self;
  end
  metaclass.send :define_method, :attachments do
    @attachments_as_of
  end
end

#after_build_new_version(new_version) ⇒ Object

Versioning Callback - This will result in a new version of attachments being created every time the attachable is updated.

Allows a complete version history to be reconstructed.

Parameters:

  • new_version (Versionable)


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# File 'lib/cms/behaviors/attaching.rb', line 269

def after_build_new_version(new_version)
  attachments.each do |a|
    a.attachable_version = new_version.version
  end
end

#after_publishObject



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# File 'lib/cms/behaviors/attaching.rb', line 243

def after_publish
  attachments.each &:publish
end

#after_revert(version) ⇒ Object

Callback - Ensure attachments get reverted whenver a block does.



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# File 'lib/cms/behaviors/attaching.rb', line 291

def after_revert(version)
  version_number = version.version
  attachments.each do |a|
    a.revert_to(version_number, {:attachable_version => self.version+1})
  end
end

#all_attachmentsObject



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# File 'lib/cms/behaviors/attaching.rb', line 258

def all_attachments
  attachments << unassigned_attachments
end

#attachable_typeObject



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# File 'lib/cms/behaviors/attaching.rb', line 262

def attachable_type
  self.class.name
end

#attachment_named(name) ⇒ Object

Locates the attachment with a given name

Parameters:

  • name (Symbol)

    The name of the attachment



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# File 'lib/cms/behaviors/attaching.rb', line 249

def attachment_named(name)
  attachments.select { |item| item.attachment_name.to_sym == name }.first
end

#attachment_namesArray<String>

Returns a list of all attachments this content type has defined.

Returns:

  • (Array<String>)

    Names



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# File 'lib/cms/behaviors/attaching.rb', line 239

def attachment_names
  Cms::Attachment.definitions[self.class.name].keys
end

#attachments_were_updated?Boolean

Returns:

  • (Boolean)


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# File 'lib/cms/behaviors/attaching.rb', line 229

def attachments_were_updated?
  attachments.each do |a|
    if a.changed?
      return true
    end
  end
  false
end

#check_for_updated_attachmentsObject

This ensures that if a change is made to an attachment, that this model is also marked as changed. Otherwise, if the change isn't detected, this record won't save a new version (since updates are rejected if no changes were made)



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# File 'lib/cms/behaviors/attaching.rb', line 223

def check_for_updated_attachments
  if attachments_changed == "true" || attachments_were_updated?
    changed_attributes['attachments'] = "Uploaded new files"
  end
end

#ensure_attachment_existsObject

Ensures that attachments exist for form, since it uses attachments.each to iterate over them.

Design Qualm: I don't like that this method has to exist, since its basically obscuring the fact that
individual attachments don't exist when an object is created.


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# File 'lib/cms/behaviors/attaching.rb', line 301

def ensure_attachment_exists
  attachment_names.each do |n|
    unless attachment_named(n.to_sym)
      # Can't use attachments.build because sometimes its an array
      attachments << Attachment.new(:attachment_name => n, :attachable => self)
    end
  end
end

#multiple_attachmentsArray<Cms::Attachment>

Returns:



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# File 'lib/cms/behaviors/attaching.rb', line 311

def multiple_attachments
  attachments.select { |a| a.cardinality == Attachment::MULTIPLE }
end

#unassigned_attachmentsObject



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# File 'lib/cms/behaviors/attaching.rb', line 253

def unassigned_attachments
  return [] if attachment_id_list.blank?
  Cms::Attachment.find attachment_id_list.split(',').map(&:to_i)
end