Validates the absence of a list of attributes

If no options are provided, validates that they are all absent.

The docs behave the same as present/2, except they validate absence.

Validates that an attribute on the original record does not equal a specific value

Validates that an attribute on the original record equals a specific value

Validates that an attribute is being changed

Validates that attribute meets the given criteria

Validates that a field or argument matches another field or argument

Validates that an attribute's value matches a given regex or string, using the provided error, message if not.

String.match?/2 is used to determine if it matches.

Validates that an attribute's value is in a given list

Validates the presence of a list of attributes

If no options are provided, validates that they are all present.

• :at_least - At least this many must be present. Defaults to the number of attributes provided

• :at_most - At most this many must be present. Defaults to the number of attributes provided

• :exactly - Exactly this many must be present

Validates that an attribute on the original record meets the given length criteria