Model fields

Here come some custom model fields mostly designed to work with PostgreSQL.

class IntegerArrayField
class BigIntegerArrayField
class StringArrayField(max_length=None)

An arrays of integers, big integers or strings. Most useful to store different array fields to store array of values or choices:

DAYS = zip(range(7), 'Sun Mon Tue Wed Thu Fri Sat'.split())

class Company(models.Model):
    phones = StringArrayField('Phone numbers', blank=True, default=lambda: [])
    workdays = IntegerArrayField('Work days', choices=DAYS)

company = Company(phones=['234-5016', '516-2314'], workdays=[1,2,3,4])
company.save()

In model form phones field would be represented as CommaSeparatedInput and workdays as multiple checkboxes:

class CompanyForm(forms.ModelForm):
    class Meta:
        model = Company # No additional magic needed
class JSONField

A field for storing arbitrary jsonifyable data.

class PickleField

A field for storing arbitrary picklable data.

class AdditionalAutoField

Additional autoincremented field which is not primary key.

Should be used with AdditionalAutoFieldManager:

from handy.models import AdditionalAutoField, AdditionalAutoFieldManager

class MyModel(models.Model):
    num = AdditionalAutoField()

    _base_manager = AdditionalAutoFieldManager()
class BigAutoField

An AutoField but uses bigint. If external_sequence argument is set to true then sequence is not created with field.