Add a Field.ifields method

[Jaymon]

This would be None by default, but when set then it will be saved, after all the fields are "seen" in Model.to_interface then any ifields methods will be called with all the fields. This would allow a specific field to mess with all the fields right before going to the db

[Jaymon]

Another idea would be to add an fsets method, this would be similar to ifields but anytime some set of fields are set this would be called

[Jaymon]

And one more, there is currently iquery but that should probably be changed to qset and it would be nice if there was a way to actually set the value in the query. I'm thinking of the case of an email, but I actually store the hash not the email, so when I set the email like this:

Foo.query.eq_email("foo@example.com")

It would actually generate the hash and not actually set email but set email_hash instead.

• i* - interface methods
• q* - query methods
• f* - field methods

[Jaymon]

Basically I want a hook so I can do something like this:

class HashField(Field):
    def __init__(self, watch_field_name, **kwargs):
        self.watch_field_name = watch_field_name
        # should inherit watch_field_name's required somehow

    def fsets(self, orm_class, fields):
        fields = super().fsets()
        fields[self.name] = String(fields[self.watch_field_name].lower()).sha256()
        return fields

Then I can just do this:

class Foo(Orm):
     bar = Field(str, True)
     bar_hash = HashField("bar")

I could even make it more magical where it strips _hash from the field name and uses that for the watch_field_name