instance method `preview`

Ruby on Rails 7.2.3

Since v7.1.6

Available in: v7.1.6 v7.2.3 v8.0.4 v8.1.2

Compare with:

preview(transformations)

Returns an ActiveStorage::Preview instance for the attachment with the set of transformations provided. Example:

video.preview(resize_to_limit: [100, 100]).processed.url

or if you are using pre-defined variants:

video.preview(:thumb).processed.url

See ActiveStorage::Blob::Representable#preview for more information.

Raises an ArgumentError if transformations is a Symbol which is an unknown pre-defined variant of the attachment.

Parameters

transformations req

Source

# File activestorage/app/models/active_storage/attachment.rb, line 101
  def preview(transformations)
    transformations = transformations_by_name(transformations)
    blob.preview(transformations)
  end

Defined in activestorage/app/models/active_storage/attachment.rb line 101 · View on GitHub · Improve this page · Find usages on GitHub

Defined in ActiveStorage::Attachment

Signature

Parameters