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| author | Mikel Lindsaar <raasdnil@gmail.com> | 2010-01-19 11:29:01 +1100 |
|---|---|---|
| committer | Mikel Lindsaar <raasdnil@gmail.com> | 2010-01-19 11:29:01 +1100 |
| commit | 3cb0283fb6547982b35fda1e0d4af00071c026ae (patch) | |
| tree | dd7413bfa82a9f2154706b4b94f970a5acfd8774 /activemodel/README | |
| parent | 907754d7ee74c4f6f94c2457bd46e116bc82acbd (diff) | |
| download | rails-3cb0283fb6547982b35fda1e0d4af00071c026ae.tar.gz rails-3cb0283fb6547982b35fda1e0d4af00071c026ae.tar.bz2 rails-3cb0283fb6547982b35fda1e0d4af00071c026ae.zip | |
Documentation cleanup and linkage for validator
Diffstat (limited to 'activemodel/README')
| -rw-r--r-- | activemodel/README | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/activemodel/README b/activemodel/README index d2b51e2390..cf103b8d6d 100644 --- a/activemodel/README +++ b/activemodel/README @@ -193,3 +193,26 @@ functionality from the following modules: {Learn more}[link:classes/ActiveModel/Validations.html] +* Make custom validators + + class Person + include ActiveModel::Validations + validates_with HasNameValidator + attr_accessor :name + end + + class HasNameValidator < ActiveModel::Validator + def validate(record) + record.errors[:name] = "must exist" if record.name.blank? + end + end + + p = ValidatorPerson.new + p.valid? #=> false + p.errors.full_messages #=> ["Name must exist"] + p.name = "Bob" + p.valid? #=> true + + {Learn more}[link:classes/ActiveModel/Validator.html] + +
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