uploading files to rails 4.0 with paperclip and simple_form

Question

Edit: as @Justin said, I probably messed that up when trying to find a solution without even realizing, oopsy... Changing the params to params.require(:pin).permit(:image, :description) did solve it. Though it doesn't work now because I get a "has an extension that does not match its contents. I'm following Rails One Month and trying to get upload image into a pins scaffolding working. I'm using paperclip for files, and simple_form. This is the code I think is relevant (feel free to ask for anything): _pin_form.erb.html ``` <%= simple_form_for(@pin, :html => {:multipart => true}) do |f| %> <%= f.error_notification %>

<%= f.file_field :image, :label => "Upload an image" %> <%= f.input :description, as: :text %>

<%= f.button :submit %>

``` pin.rb ``` class Pin < ActiveRecord::Base has_attached_file :image belongs_to :user validates :description, :presence => true validates :user_id, :presence => true validates_attachment…

Accepted Answer

Paperclip has spoofing validation to ensure the contents of the file actually match the extension. This validation is achieved partially by using the `file` command of the operating system to determine the file content. Unfortunately Windows doesn't have a `file` command so the validation will always fail.

To workaround this you should disable spoofing. Create an initializer with the following code:

```
module Paperclip
  class MediaTypeSpoofDetector
    def spoofed?
      false
    end
  end
end
```

It's valid to leave the `validates_attachment_content_type` validator though because is it still the best way to restrict the types of files the user is allowed to upload. You just need to disable the spoofing bit of this validation.

uploading files to rails 4.0 with paperclip and simple_form

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