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Merge pull request #13829 from qsymmachus/improve_validates_with_example

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Reordered classes in AR Validation #validates_with example [ci skip]
This commit is contained in:
Rafael Mendonça França 2014-01-24 11:41:25 -08:00
commit c438c61794
1 changed files with 8 additions and 8 deletions
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16
guides/source/active_record_validations.md
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@ -616,10 +616,6 @@ The default error message is _"has already been taken"_.
This helper passes the record to a separate class for validation.
```ruby
class Person < ActiveRecord::Base
validates_with GoodnessValidator
end
class GoodnessValidator < ActiveModel::Validator
def validate(record)
if record.first_name == "Evil"
@ -627,6 +623,10 @@ class GoodnessValidator < ActiveModel::Validator
end
end
end
class Person < ActiveRecord::Base
validates_with GoodnessValidator
end
```
NOTE: Errors added to `record.errors[:base]` relate to the state of the record
@ -644,10 +644,6 @@ Like all other validations, `validates_with` takes the `:if`, `:unless` and
validator class as `options`:
```ruby
class Person < ActiveRecord::Base
validates_with GoodnessValidator, fields: [:first_name, :last_name]
end
class GoodnessValidator < ActiveModel::Validator
def validate(record)
if options[:fields].any?{|field| record.send(field) == "Evil" }
@ -655,6 +651,10 @@ class GoodnessValidator < ActiveModel::Validator
end
end
end
class Person < ActiveRecord::Base
validates_with GoodnessValidator, fields: [:first_name, :last_name]
end
```
Note that the validator will be initialized *only once* for the whole application