class WarpEngine::Images::HostModel

The default image adapter: the host model named by image_class_name (Image), served by the host at /api/image/:id.

Constants

URL_PREFIX: The path the host serves images under.

Public Instance Methods

available? (record)

Source

# File lib/warp_engine/images.rb, line 39
def available?(record)
  return true unless record.respond_to?(:file_path)

  File.exist?(record.file_path.to_s)
end

Returns true when the file of record exists on disk, or when the record has no file_path.

build_from_upload (upload)

Source

# File lib/warp_engine/images.rb, line 28
def build_from_upload(upload)
  model.new(file_upload: upload)
end

Returns a new, unsaved image record built from the uploaded file.

label_for (record)

Source

# File lib/warp_engine/images.rb, line 33
def label_for(record)
  record.original_filename
end

Returns the label of record in the admin: its original file name.

model ()

Source

# File lib/warp_engine/images.rb, line 18
def model
  model_name.to_s.constantize
end

Returns the image model class. Raises NameError when it does not exist.

model_name ()

Source

# File lib/warp_engine/images.rb, line 13
def model_name
  WarpEngine.config.image_class_name
end

Returns the configured image class name.

select_options ()

Source

# File lib/warp_engine/images.rb, line 46
def select_options
  model.order(:original_filename).map { |record| [ label_for(record), record.id ] }
end

Returns [label, id] pairs of every image, by file name, for the admin picker.

url_for (image_id)

Source

# File lib/warp_engine/images.rb, line 23
def url_for(image_id)
  image_id.present? ? "#{URL_PREFIX}/#{image_id}" : nil
end

Returns /api/image/<image_id>, or nil for a blank id.