Adding a relationship to a model with a cached relationship...

Question

If we access a relationship from a model and later on try to add a new relationship to that model we get the results of the first access of the model.

Code attached to demonstrate.

Mike.

Created by Mike (at coverallcrew) - 2009-07-06 21:28:14 UTC

Original Lighthouse ticket: http://datamapper.lighthouseapp.com/projects/20609/tickets/954

该提问来源于开源项目：datamapper/dm-core

Answer 1

I can confirm the above described behavior on latest next branch. However, I’m not really sure wether this is a bug or not. Another (and probably more idiomatic) way to write the above actually works as expected. (This assumes current next branch)

 ruby
puts ’------- This works -------------------------------------’

person = Person.new(:name => ’This is a person’)
person.save
puts "\tPerson: \t\t"        + person.inspect

person.things.new(:person => person, :name => ’Something...’)
person.save

puts "\tThing:  \t\t"        + person.things.last.inspect
puts "\tPerson’s Things: \t" + person.things.inspect

person.things.new(:person => person, :name => ’Something else...’)
person.save

puts "\tThing:  \t\t"        + person.things.last.inspect
puts "\tPerson’s Things: \t" + person.things.inspect

by Martin Gamsjaeger (snusnu)