Assigning photo attribute saves as ActionDispatch::Http:UploadedFile

[quantumpotato]

I'm trying to save a file with carrierwave but when I try to read the attribute, I get an ActionDispatch::Http:UploadedFile object and can't access the file url.

irb(main):009:0> t.photo.url
NoMethodError: undefined method `url' for "#<ActionDispatch::Http::UploadedFile:0x007f77a09182e0>":String

Ticket.rb

class Ticket < ActiveRecord::Base
  mount_uploader :photo, PhotoUploader
end

My action:

def create
    @user = User.new(user_params)

    if @user.save       
      puts "Saved the user"
        @ticket = Ticket.new(ticket_parameters)
      image_data = params[:photo]
      @ticket.photo = image_data

And my upload:

- (void)registerUserWithTicket:(HDTicket *)t driver:(HDDriver *)d {
    NSString *endpoint = @"register.json";
    NSDictionary *params = @{@"ticket" : [t params], @"user" : [d params]};

    NSString *path = [self fullPath:endpoint];
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    manager.requestSerializer = [AFJSONRequestSerializer serializer];

    NSData *imageData = UIImagePNGRepresentation([self imageWithImage:t.photo convertToSize:CGSizeMake(t.photo.size.width / 4, t.photo.size.width / 4)]);

    [manager POST:path parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData>  _Nonnull formData) {
        [formData appendPartWithFileData:imageData name:@"photo" fileName:@"image.png" mimeType:@"image/png"];
    } progress:^(NSProgress * _Nonnull uploadProgress) {

    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {
        [self.delegate registered:true];
    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        [self.delegate registered:false];

    }];

[ghost]

+1

[sekretarot]

+1

[jamesalbuquerque]

Same problem.

[quantumproducer]

I'm glad I'm not the only one with this issue. Devs, please take a look!

[mshibuya]

I guess something is messed up in your code(note that "#<ActionDispatch::Http::UploadedFile:0x007f77a09182e0>":String is string representation of UploadedFile, not an instance of UploadedFile).
If you could show me full model and uploader code, I can look into them.