fc3acf2e8d
Permit checking whether a belongs_to association has been pointed to a new target record in the previous save and whether it will point to a new target record in the next save.
post.category # => #<Category id: 1, name: "Ruby">
post.category = Category.second # => #<Category id: 2, name: "Programming">
post.category_changed? # => true
post.category_previously_changed? # => false
post.save!
post.category_changed? # => false
post.category_previously_changed? # => true
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| .. | ||
| active_record/connection_adapters | ||
| activejob | ||
| assets | ||
| cases | ||
| fixtures | ||
| migrations | ||
| models | ||
| schema | ||
| support | ||
| config.example.yml | ||
| config.rb | ||