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Validation Scenarios
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Validation Scenarios
Usage
First, in your models, you declare validation scenarios details using when_scenario_is method. In the following example, both User and Address models have user_registration and profile_update scenarios declared:
class User < ActiveRecord::Base
has_one :address
when_scenario_is :user_registration do |this|
this.validates_presence_of :email
this.validates_associated :address
end
when_scenario_is :profile_update do |this|
this.validates_presence_of :first_name :unless => :something_here
end
end
class Address < ActiveRecord::Base
belongs_to :user
when_scenario_is :user_registration do |this|
this.validates_numericality_of :postcode
end
when_scenario_is :profile_update do |this|
this.validates_presence_of :street_address_1
this.validates_presence_of :city
end
end
Then, when you want to process, for example, the user_registration scenario - you just start it using: ActiveRecord::Base.with_validation_scenario method. In the following example it validates User object per rules declared for user_registration scenario.
Please also note that associated Address instance is also aware that the current validation scenario is user_registration. That’s why the following test passes:
ActiveRecord::Base.with_validation_scenario(:user_registration) do
user = User.new(:email => "foo@bar.baz")
user.build_address(:postcode => 'intentionally_not_numerical')
assert !user.save
assert user.errors.invalid?(:address)
assert_match(/is not a number/i, user.address.errors.on(:postcode))
end
Vitals
| Home | http://validation-scenarios.googlecode.com |
|---|---|
| Repository | http://validation-scenarios.googlecode.com/svn/tags/validation-scenarios |
| License | Rails' (MIT) |
| Tags |
model
|
| Rating | (10 votes) |
| Owner | Pavlikus |
| Created | 14 January 2008 |

