diff options
Diffstat (limited to 'activeresource/lib/active_resource/validations.rb')
| -rw-r--r-- | activeresource/lib/active_resource/validations.rb | 44 |
1 files changed, 15 insertions, 29 deletions
diff --git a/activeresource/lib/active_resource/validations.rb b/activeresource/lib/active_resource/validations.rb index a7c624f309..4bc906d291 100644 --- a/activeresource/lib/active_resource/validations.rb +++ b/activeresource/lib/active_resource/validations.rb @@ -216,39 +216,25 @@ module ActiveResource end end - # Module to allow validation of Active Resource objects, which creates an Errors instance for every resource. - # Methods are implemented by overriding Base#validate or its variants Each of these methods can inspect - # the state of the object, which usually means ensuring that a number of attributes have a certain value - # (such as not empty, within a given range, matching a certain regular expression and so on). + # Module to support validation and errors with Active Resource objects. The module overrides + # Base#save to rescue ActiveResource::ResourceInvalid exceptions and parse the errors returned + # in the web service response. The module also adds an +errors+ collection that mimics the interface + # of the errors provided by ActiveRecord::Errors. # # ==== Example # - # class Person < ActiveResource::Base - # self.site = "http://www.localhost.com:3000/" - # protected - # def validate - # errors.add_on_empty %w( first_name last_name ) - # errors.add("phone_number", "has invalid format") unless phone_number =~ /[0-9]*/ - # end + # Consider a Person resource on the server requiring both a +first_name+ and a +last_name+ with a + # <tt>validates_presence_of :first_name, :last_name</tt> declaration in the model: # - # def validate_on_create # is only run the first time a new object is saved - # unless valid_member?(self) - # errors.add("membership_discount", "has expired") - # end - # end - # - # def validate_on_update - # errors.add_to_base("No changes have occurred") if unchanged_attributes? - # end - # end - # - # person = Person.new("first_name" => "Jim", "phone_number" => "I will not tell you.") - # person.save # => false (and doesn't do the save) - # person.errors.empty? # => false - # person.errors.count # => 2 - # person.errors.on "last_name" # => "can't be empty" - # person.attributes = { "last_name" => "Halpert", "phone_number" => "555-5555" } - # person.save # => true (and person is now saved to the remote service) + # person = Person.new(:first_name => "Jim", :last_name => "") + # person.save # => false (server returns an HTTP 422 status code and errors) + # person.valid? # => false + # person.errors.empty? # => false + # person.errors.count # => 1 + # person.errors.full_messages # => ["Last name can't be empty"] + # person.errors.on(:last_name) # => "can't be empty" + # person.last_name = "Halpert" + # person.save # => true (and person is now saved to the remote service) # module Validations def self.included(base) # :nodoc: |