ActiveRecord: Skip validation when saving multiple objects

问题

I know I can skip validations for an individual save, like this:

User.new(name: 'John').save(validate: false)

But how can I do that when saving multiple objects at once? Like this:

Category.create([
  { name: 'Apps' },
  { name: 'Songs' },
  { name: 'Movies' }
])

回答1:

I found this gem: https://github.com/zdennis/activerecord-import

It works like this:

categories = [ 
  Category.new(name: 'Apps'),
  Category.new(name: 'Songs'),
  Category.new(name: 'Movies')
]

Category.import(categories, validate: false)

It is also possible to use plain arrays instead of ActiveRecord objects.

I guess it generates pure SQL when validate is set to false so it can skip validations.

回答2:

You can't do that with create. If you really must skip validations you can do something like this:

[
  { name: 'Apps' },
  { name: 'Songs' },
  { name: 'Movies' }
].each do |attributes|
  c = Category.new(attributes)
  s.save(validate: false)
end

来源：https://stackoverflow.com/questions/39064067/activerecord-skip-validation-when-saving-multiple-objects