Method: ActiveRecord::Relation#first_or_create
- Defined in:
- activerecord/lib/active_record/relation.rb
#first_or_create(attributes = nil, options = {}, &block) ⇒ Object
Tries to load the first record; if it fails, then create
is called with the same arguments as this method.
Expects arguments in the same format as Base.create
.
Examples
# Find the first user named Penélope or create a new one.
User.where(:first_name => 'Penélope').first_or_create
# => <User id: 1, first_name: 'Penélope', last_name: nil>
# Find the first user named Penélope or create a new one.
# We already have one so the existing record will be returned.
User.where(:first_name => 'Penélope').first_or_create
# => <User id: 1, first_name: 'Penélope', last_name: nil>
# Find the first user named Scarlett or create a new one with a particular last name.
User.where(:first_name => 'Scarlett').first_or_create(:last_name => 'Johansson')
# => <User id: 2, first_name: 'Scarlett', last_name: 'Johansson'>
# Find the first user named Scarlett or create a new one with a different last name.
# We already have one so the existing record will be returned.
User.where(:first_name => 'Scarlett').first_or_create do |user|
user.last_name = "O'Hara"
end
# => <User id: 2, first_name: 'Scarlett', last_name: 'Johansson'>
118 119 120 |
# File 'activerecord/lib/active_record/relation.rb', line 118 def first_or_create(attributes = nil, = {}, &block) first || create(attributes, , &block) end |