Django snippets

from django.utils.datastructures import SortedDict

class Choices(SortedDict):
    def __init__(self, *choices):
        super(Choices, self).__init__()
        for choice in choices:
            self[choice[0]] = choice[1]
    
    @property
    def choices(self):
        choices = []
        for key, value in self.items():
            choices.append( (key, value,) )
        return tuple(choices)
    
    def __iter__(self):
        return self.choices.__iter__()

# Choices implementation

class MyForm(forms.Form):
    CHOICE1 = 0
    CHOICE2 = 1
    CHOICE3 = 2
    CHOICES = Choices(
        (CHOICE1, 'Choice 1'),
        (CHOICE2, 'Choice 2'),
        (CHOICE3, 'Choice 3'),
        )
    field = forms.ChoiceField(
            choices=CHOICES, )