Validates the given field on changeset inflecting the rules for CPF Accepted formats are:

• xxx.xxx.xxx-xx
• xxxxxxxxx-xx The validated field defaults to cpf following the convetion of function name to change it you can pass a atom as second arity as the name of your field, example: validate_cpf(changeset, :cadastro_pessoa_fisica)

To customize the error message you need to pass a keyword as thrid arity, example: validate_cpf(changeset, :cpf, message: "My message")

Validates the cpf format and also validates the verification digits (the last two digits) from the changeset

Both the field and error messages can be customizeds. The field defaults to :cpf as the function name implies, customization can be used like: validate_cpf_strictly(changeset, :cadastro_pessoa_fisica)

The error message can be customized using a message: keyword like: validate_cpf_strictly(changeset, :cpf, message: "My error message")