Returns empty object

[TheRPunkt]

Hello everybody,
I'm new to this gem and wanted to build it into my app. So firstly, I started just by creating a shortened url. I tried the following:
Shortener::ShortenedUrl.generate("https://github.com/jpmcgrath/shortener")
However the first SQL Statement instantly rollbacks and I get a an empty object back:

Shortener::ShortenedUrl Load (0.4ms)  SELECT  "shortened_urls".* FROM "shortened_urls" WHERE "shortened_urls"."url" = ? ORDER BY "shortened_urls"."id" ASC LIMIT ? [["url","https://github.com/jpmcgrath/shortener"], ["LIMIT", 1]]
   (0.1ms)  begin transaction
   (0.1ms)  rollback transaction
=> #<Shortener::ShortenedUrl:0x007fc34c4b6f88 id: nil, owner_id: nil, owner_type: nil, url: "https://github.com/jpmcgrath/shortener", unique_key: nil, use_count: 0, expires_at: nil, created_at: nil, updated_at: nil>

Maybe someone can help me on that.. :/

[jpmcgrath]

Hi @TheRPunkt, what is the result when you try the bang (!) version of the generate method? i.e. Shortener::ShortenedUrl.generate!("https://github.com/jpmcgrath/shortener"). I expect there will be an exception raised that will point us in the right direction.

[TheRPunkt]

Hi, thanks for your help :) When trying out the method you pointed out, active records rollbacks the transaction and returns an empty shortened url object. When trying out object.errors.full_messages there is the message "Owner must exists". However I did not have setup the owner possibility you mentioned in the readme file... Do you have an idea?

[jpmcgrath]

What version of Rails are you using? It might be because Rails5 has introduced an implicit validates_presence_of for belongs_to associations. If you are on Rails5, i have yet to address this, but some others have done some good work on creating a Rails5 branch that can be used in the interim.

[jpmcgrath]

#83

[TheRPunkt]

I'm working with version 5.0 of rails and already saw the issues about it. Additionally, I already tried multiple branches which should be updated but did not work out. However, this one one is working just fine. Thanks for your help, could've found that myself.