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move the tips about :allow_(nil|blank) near their explanations, also no need to say these are options for all validators if they are not

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Xavier Noria 2011-03-14 21:59:58 +01:00
parent 9b64399684
commit de5e41f855
1 changed files with 5 additions and 3 deletions
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8
railties/guides/source/active_record_validations_callbacks.textile
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@ -461,9 +461,7 @@ The block receives the model, the attribute's name and the attribute's value. Yo
h3. Common Validation Options
There are some common options that all the validation helpers can use. Here they are, except for the +:if+ and +:unless+ options, which are discussed later in "Conditional Validation":#conditional-validation.
TIP: Note that +allow_nil+ and +allow_blank+ will be ignored when using the presence validator. Please use the length validator if you want to validate if something is a specific length but allows for +nil+ values.
These are common validation options:
h4. +:allow_nil+
@ -476,6 +474,8 @@ class Coffee < ActiveRecord::Base
end
</ruby>
TIP: +:allow_nil+ is ignored by the presence validator.
h4. +:allow_blank+
The +:allow_blank+ option is similar to the +:allow_nil+ option. This option will let validation pass if the attribute's value is +blank?+, like +nil+ or an empty string for example.
@ -489,6 +489,8 @@ Topic.create("title" => "").valid? # => true
Topic.create("title" => nil).valid? # => true
</ruby>
TIP: +:allow_blank+ is ignored by the presence validator.
h4. +:message+
As you've already seen, the +:message+ option lets you specify the message that will be added to the +errors+ collection when validation fails. When this option is not used, Active Record will use the respective default error message for each validation helper.