class ActiveStorage::Attached::Many

# File activestorage/lib/active_storage/attached/many.rb, line 21
def attach(*attachables)
  attachables.flatten.collect do |attachable|
    if record.new_record?
      attachments.build(record: record, blob: create_blob_from(attachable))
    else
      attachments.create!(record: record, blob: create_blob_from(attachable))
    end
  end
end

Associates one or several attachments with the current record, saving them to the database.

document.images.attach(params[:images]) # Array of ActionDispatch::Http::UploadedFile objects
document.images.attach(params[:signed_blob_id]) # Signed reference to blob from direct upload
document.images.attach(io: File.open("/path/to/racecar.jpg"), filename: "racecar.jpg", content_type: "image/jpg")
document.images.attach([ first_blob, second_blob ])

# File activestorage/lib/active_storage/attached/many.rb, line 38
def attached?
  attachments.any?
end

Returns true if any attachments has been made.

class Gallery < ActiveRecord::Base
  has_many_attached :photos
end

Gallery.new.photos.attached? # => false

# File activestorage/lib/active_storage/attached/many.rb, line 11
def attachments
  record.public_send("#{name}_attachments")
end

Returns all the associated attachment records.

All methods called on this proxy object that aren't listed here will automatically be delegated to attachments.

# File activestorage/lib/active_storage/attached/many.rb, line 43
def detach
  attachments.destroy_all if attached?
end

Deletes associated attachments without purging them, leaving their respective blobs in place.

# File activestorage/lib/active_storage/attached/many.rb, line 54
    

Directly purges each associated attachment (i.e. destroys the blobs and attachments and deletes the files on the service).

# File activestorage/lib/active_storage/attached/many.rb, line 58
  

Purges each associated attachment through the queuing system.