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Diffstat (limited to 'guides/source/active_record_validations.md')
| -rw-r--r-- | guides/source/active_record_validations.md | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/guides/source/active_record_validations.md b/guides/source/active_record_validations.md index 582bb240dd..1c1b863fe9 100644 --- a/guides/source/active_record_validations.md +++ b/guides/source/active_record_validations.md @@ -361,6 +361,8 @@ class Product < ActiveRecord::Base end ``` +Alternatively, you can require that the specified attribute does _not_ match the regular expression by using the `:without` option. + The default error message is _"is invalid"_. ### `inclusion` @@ -524,9 +526,15 @@ If you validate the presence of an object associated via a `has_one` or `marked_for_destruction?`. Since `false.blank?` is true, if you want to validate the presence of a boolean -field you should use `validates :field_name, inclusion: { in: [true, false] }`. +field you should use one of the following validations: -The default error message is _"can't be blank"_. +```ruby +validates :boolean_field_name, presence: true +validates :boolean_field_name, inclusion: { in: [true, false] } +validates :boolean_field_name, exclusion: { in: [nil] } +``` +By using one of these validations, you will ensure the value will NOT be `nil` +which would result in a `NULL` value in most cases. ### `absence` @@ -698,7 +706,7 @@ we don't want names and surnames to begin with lower case. ```ruby class Person < ActiveRecord::Base validates_each :name, :surname do |record, attr, value| - record.errors.add(attr, 'must start with upper case') if value =~ /\A[a-z]/ + record.errors.add(attr, 'must start with upper case') if value =~ /\A[[:lower:]]/ end end ``` |