Normalisation

normalizes declares a transform applied to an attribute before validation and save, so the stored value is always canonical. Declare it in submethod BUILD.

class Contact is Model {
  submethod BUILD {
    self.normalizes('email', :with(-> $v { $v.trim.lc }));
  }
}

my $c = Contact.create({ email => '  Foo@Bar.COM ' });
$c.email;                       # 'foo@bar.com'

The normaliser runs before validation, so validations see the normalised value.

Multiple attributes#

Pass several attribute names to apply the same normaliser to each:

self.normalizes('first-name', 'last-name', :with(-> $v { $v.trim }));

Queries#

A lookup on a normalised attribute normalises the search value too, so a query matches what was stored regardless of the input's casing or whitespace:

Contact.where({ email => '  FOO@BAR.COM ' });   # finds 'foo@bar.com'

normalize-value-for(attribute, value) returns the normalised form of a value (or the value unchanged when the attribute has no normaliser), which is what the query layer uses.