CODEWITHSUNDEEP
ruby-on-railsruby
krunal shah
krunal shah

Reputation: 16339

create_or_update method in rails

if ClassName.exists?(["id = ?", self.id])
  object = ClassName.find_by_name(self.name)
  object.update_attributes!( :street_address => self.street_address,
    :city_name => self.city_name,
    :name => self.org_unit_name,
    :state_prov_id => self.state_prov_id,
    :zip_code => self.zip_code)
else
  ClassName.create! :street_address => self.street_address,
    :city_name => self.city_name,
    :federalid => self.federalid,
    :name => self.org_unit_name,
    :state_prov_id => self.state_prov_id,
    :zip_code => self.zip_code
end

I have code like this. I would like to improve it so that it uses a method, something like create_or_update.

    ClassName.create_or_update_by_name(:name => self.name,
    :street_address => self.street_address,
    :city_name => self.city_name,
    :federalid => self.federalid,
    :name => self.org_unit_name,
    :state_prov_id => self.state_prov_id,
    :zip_code => self.zip_code)

If the name exists in the database then it should update that object otherwise it should create a new object.

Is there is any method that exists that I can do this with?

Upvotes: 26

Views: 37164

Answers (3)

Ju Nogueira
Ju Nogueira

Reputation: 8461

my_class = ClassName.find_or_initialize_by_name(name)

my_class.update_attributes(
   :street_address => self.street_address,
   :city_name => self.city_name,
   :federalid => self.federalid,
   :state_prov_id => self.state_prov_id,
   :zip_code => self.zip_code
)

As of Rails 6, update_attributes! and update_attributes is deprecated for update! and update, respectively:

my_class.update(
   :street_address => self.street_address,
   :city_name => self.city_name,
   :federalid => self.federalid,
   :state_prov_id => self.state_prov_id,
   :zip_code => self.zip_code
)

Upvotes: 83

Zach Colon
Zach Colon

Reputation: 177

The checked answer above works well for Rails 3. That said the find_or_initialize_by_attribute methods were deprecated in Rails 4. This is the new way. See Rails4 Deprecation warning for find_or_initialize_by method 

person = Person.find_or_initialize(name: 'name')   
person.update_attributes(other_attrs)

Upvotes: 10

lambdabutz
lambdabutz

Reputation: 354

person = Person.find_by_name(name) || Person.new(:name => name)
person.update_attributes!(:street_address => street_address, :city_name => city_name) #etc etc

Upvotes: 6

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