#forms.FormBase is very powerful to use common clean_fields on differents Django Forms

How can i recycle my clean_field on differents Forms?

class BaseBurnForm(forms.BaseForm):
	"""
	I will need this cleans on all my project
	"""
	def clean_char_null(self):
   		char_null = self.cleaned_data.get('char_null')
    		if len(char_null):
        		raise forms.ValidationError('This Field must be null')
    	return self.cleaned_data

	def clean_char_50(self):
   		char_50 = self.cleaned_data.get('char_50')
   		if len(char_50) <= 10:
       		raise forms.ValidationError('This Field must have more than 10 char')
   		return self.cleaned_data

	def clean_char_255(self):
   		char_255 = self.cleaned_data.get('char_255')
   		if len(char_255) <= 10:
       		raise forms.ValidationError('This Field must have more than 10 char')
    	return self.cleaned_data


class BurnTextModelForm(forms.ModelForm, BaseBurnForm):
	"""
	char_255 = models.CharField(max_length=255, null=True, blank=True)
	char_50 = models.CharField(max_length=50, null=True, blank=True)
	"""
	class Meta:
   		model = BurnTextNull


class BurnTextForm(forms.Form, BaseBurnForm):
	"""
	One Simple Django Form with 2 fields
	"""
	char_null = forms.CharField(required=False)
	char_50 = forms.CharField(max_length=50)

Easy and powerful :P