CODEWITHSUNDEEP
ruby-on-rails
inchr
inchr

Reputation: 61

Skip validation of the polymorphic association in rails

I'm trying to save a model called Upload that has a polyformic association called uploadable.

Now I'm doing a dropzone js area where users can drag and drop the files and it should create the upload on server side and then return some keys that will be added in the html and will be used only if the user save the form(if user save the form I will set the uploadable_id and uploadable_type with the comment just created or otherwise the upload will be automatically deleted within 24h with a cronjob)

The only problem that I have is that rails automatically wants that uploadable_id e uploadable_type are present when I do @upload.save

How can I skip the validation (of presence) only for the uploadable attribute ? I want avoid to use @upload.save(validate: false) because it skips all the validations and not just one.

I've tried using a fake attribute:

class Upload < ApplicationRecord
  belongs_to :uploadable, polymorphic: true
  has_attached_file :file

  attr_accessor :skip_uploadable_validation

  validate :uploadable, unless: :skip_uploadable_validation

end

And then I do:

@upload = Upload.new
@upload.file = params[:file]
@upload.skip_uploadable_validation = true

@upload.save # it fails anyway

But it doesn't works.

Upvotes: 2

Views: 2402

Answers (1)

fongfan999
fongfan999

Reputation: 2624

You can puts optional: true to this line:

belongs_to :uploadable, polymorphic: true, optional: true

Or using this way:

with_options unless: :skip_uploadable_validation do
  validates :uploadable_id, presence: true
  validates :uploadable_type, presence: true
end

Upvotes: 6

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