Example SplitDateField

splitdate.py

"""
Release edit date field
"""
class SplitDateWidget(forms.MultiWidget):
    
    def __init__(self, attrs=None):
        
        widgets = (
            forms.TextInput(attrs={'placeholder': "DD", 'size': "2", 'maxlength': "2"}),
            forms.TextInput(attrs={'placeholder': "MM", 'size': "2", 'maxlength': "2"}),
            forms.TextInput(attrs={'placeholder': "YYYY", 'size': "4", 'class': "year", 'maxlength': "4"}),
        )
        
        super(SplitDateWidget, self).__init__(widgets, attrs=attrs)
        
    def decompress(self, val):
        try:
            return [val.day, val.month, val.year]
        except AttributeError:
            pass
        return [None, None, None]
        
    def format_output(self, rendered_widgets):
        return mark_safe('%s %s %s' % (rendered_widgets[0], rendered_widgets[1], rendered_widgets[2]))
            
class SplitDateField(forms.MultiValueField):
    
    def __init__(self, required=True, widget=None, label=None, initial=None, help_text=None, choices=None):
    
        widget = SplitDateWidget
        
        fields = (
            forms.IntegerField(),
            forms.IntegerField(),
            forms.IntegerField(),
        )
        
        super(SplitDateField, self).__init__(fields, widget=widget, required=required)
        
    def compress(self, vals):
        if len(vals) > 0:
            try:
                date = datetime.date(vals[2], vals[1], vals[0])
                return date
            except (ValueError, TypeError):
                raise forms.ValidationError("You must enter a valid date")
        return None
    
    def clean(self, value, initial=None):
        value = super(SplitDateField, self).clean(value)
        return value