ruby - Hide record in Rails model if nested_attributes are empty -

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I have two models in the Railway app: listing and ListingPhoto . I want to create some kind of scope for my model which removes listing s which is not nested ListingPhoto s is being pulled from the external API, so my There is no easy way to control these savings.

Listing looks like this: 

  entering the class & lt;    looks like this:  
  code> class listing photo & lt; ActiveRecord :: Base is_to: Listing Valid: Listing, Attendance: Right Mount_uploader: Photo, Photo Uploader and   
 What should I add to my  listing  model to stop Show listing with empty picture set?   
 
 
 You can add static method to the listing model:  
  def Self.with_photos includes (: listing_photos) .where.not (: listing_photos = & gt; {: listing_id = & gt; blue}} end   
 and then simply call easily :  
  listing. With_photos

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