Module: CouchRest::Model::ExtendedAttachments

Extended by:
ActiveSupport::Concern
Included in:
Base
Defined in:
lib/couchrest/model/extended_attachments.rb

Instance Method Summary collapse

Instance Method Details

#attachment_uri(attachment_name) ⇒ Object

returns URI to fetch the attachment from



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# File 'lib/couchrest/model/extended_attachments.rb', line 57

def attachment_uri(attachment_name)
  return unless has_attachment?(attachment_name)
  "#{database.uri}/#{self.id}/#{attachment_name}"
end

#attachment_url(attachment_name) ⇒ Object

returns URL to fetch the attachment from



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# File 'lib/couchrest/model/extended_attachments.rb', line 51

def attachment_url(attachment_name)
  return unless has_attachment?(attachment_name)
  "#{database.root}/#{self.id}/#{attachment_name}"
end

#attachments ⇒ Object

return all attachments



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# File 'lib/couchrest/model/extended_attachments.rb', line 17

def attachments
  self['_attachments'] ||= {}
end

#create_attachment(args = {}) ⇒ Object

Add a file attachment to the current document. Expects :file and :name to be included in the arguments.



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# File 'lib/couchrest/model/extended_attachments.rb', line 8

def create_attachment(args={})
  raise ArgumentError unless args[:file] && args[:name]
  return if has_attachment?(args[:name])
  set_attachment_attr(args)
rescue ArgumentError => e
  raise ArgumentError, 'You must specify :file and :name'
end

#delete_attachment(attachment_name) ⇒ Object

deletes a file attachment from the current doc



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# File 'lib/couchrest/model/extended_attachments.rb', line 37

def delete_attachment(attachment_name)
  return unless attachments
  if attachments.include?(attachment_name)
    attribute_will_change!("_attachments")
    attachments.delete attachment_name
  end
end

#has_attachment?(attachment_name) ⇒ Boolean

returns true if attachment_name exists

Returns:

  • (Boolean) 


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# File 'lib/couchrest/model/extended_attachments.rb', line 46

def has_attachment?(attachment_name)
  !!(attachments && attachments[attachment_name] && !attachments[attachment_name].empty?)
end

#read_attachment(attachment_name) ⇒ Object

reads the data from an attachment



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# File 'lib/couchrest/model/extended_attachments.rb', line 22

def read_attachment(attachment_name)
  database.fetch_attachment(self, attachment_name)
end

#update_attachment(args = {}) ⇒ Object

modifies a file attachment on the current doc



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# File 'lib/couchrest/model/extended_attachments.rb', line 27

def update_attachment(args={})
  raise ArgumentError unless args[:file] && args[:name]
  return unless has_attachment?(args[:name])
  delete_attachment(args[:name])
  set_attachment_attr(args)
rescue ArgumentError => e
  raise ArgumentError, 'You must specify :file and :name'
end