Rails app has trouble with inter-model saving

Question

I\'m working on an app that downloads meta tags from websites and saves then. The downloading happens in a model called Site. I\'d like to save off the downloaded

Answer 1

The problem is here:

self.robots_tags.robots_meta = tag

self.robots_tags is a collection of objects defined by has_many :robots_tags, and you're attempting to assign a specific attribute to that entire collection. You can't do this. If you want to assign to an attribute on a specific object, you have to either iterate over the collection, or select a specific object from the collection via first or last or any of the other Enumerable methods.

Answer 2

By inspection, the offending line appears to be:

self.robots_tags.robots_meta = tag

You should iterate over self.robots_tags instead, with something like:

self.robots_tags.each do |robot_tag|
  robot_tag.robots_meta = tag
end