Class: ActiveStorage::Attached::Many

Inherits:
ActiveStorage::Attached show all
Defined in:
lib/active_storage/attached/many.rb

Overview

Decorated proxy object representing of multiple attachments to a model.

Instance Attribute Summary

Attributes inherited from ActiveStorage::Attached

#dependent, #name, #record

Instance Method Summary collapse

Methods inherited from ActiveStorage::Attached

#initialize

Constructor Details

This class inherits a constructor from ActiveStorage::Attached

Instance Method Details

#attach(*attachables) ⇒ Object

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 ])



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# File '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

#attached? ⇒ Boolean

Returns true if any attachments has been made.

class Gallery < ActiveRecord::Base
  has_many_attached :photos
end

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

Returns:

  • (Boolean) 


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# File 'lib/active_storage/attached/many.rb', line 38

def attached?
  attachments.any?
end

#attachments ⇒ Object

Returns all the associated attachment records.

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



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# File 'lib/active_storage/attached/many.rb', line 11

def attachments
  record.public_send("#{name}_attachments")
end

#detach ⇒ Object

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



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# File 'lib/active_storage/attached/many.rb', line 43

def detach
  attachments.destroy_all if attached?
end