Rails + CarrierWave: NoMethodError: undefined method `name' for nil:NilClass

Question

I am using CarrierWave with Rails 3.1. I am getting the following error message when I submit the form (trying to upload an image):

Error Message:

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Answer 1

I had a similar problem. Solution was changing:

attr_accessible :title, :body, :user_id, :draft, :post_type, :image
belongs_to :user
mount_uploader :image_url, ImageUploader

to:

attr_accessible :title, :body, :user_id, :draft, :post_type, :image_url
belongs_to :user
mount_uploader :image_url, ImageUploader