Arext
Active Record Extensions.
Validations
validates_constraints
This uses the information one can extract from ActiveRecord::ConnectionAdapter::Column to add default validations. The text?, limit and type methods are used to guess what validations are to be added validates_constraints make some assumptions (see below) and none of its behaviour is configurable. (you can always use the standard validations in addition to make some adjustments)
* Adds validates_presence_of for columns with not null constraints (unless type is :boolean)
* options are added so that empty strings will pass, unlike if you add the validate_presence_of yourself.
If you want to have different behaviour then just add a validation yourself
* Adds validates_inclusion_of(:in => [true, false]) for columns with not null constraints and :boolean type
* Adds validates_length_of for text columns with not null limit
validates_url
This validator adds the feature to validate urls with http and https protocols. It also include portnumbers and any subdomains. Instead of a domain name, you can use ip address too (version 4).
validates_host
This validator adds the feature to validate a hostname. Instead of a hostname, you can use ip address too (version 4).
validates_email
This validator adds the feature to validate a email address.
Example
validates_constraints
in your ActiveRecord class:
validate_constraints(:attribute_name, :other_attribute_name)
or
validates_constraints() for all attributes
validates_url
in your ActiveRecord class:
validates_url(:attribute)
validates_host
in your ActiveRecord class:
validates_host(:attribute)
validates_email
in your ActiveRecord class:
validates_email(:attribute)
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