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Location: symposion_app/registrasion/controllers/credit_note.py - annotation
87e6fa064a11
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text/x-python
Merge branch 'master' into admin_models_cleanup
6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 6b10a0a7e427 | from django.db import transaction
from registrasion import models as rego
class CreditNoteController(object):
def __init__(self, credit_note):
self.credit_note = credit_note
@classmethod
def generate_from_invoice(cls, invoice, value):
''' Generates a credit note of the specified value and pays it against
the given invoice. You need to call InvoiceController.update_status()
to set the status correctly, if appropriate. '''
credit_note = rego.CreditNote.objects.create(
invoice=invoice,
amount=0-value, # Credit notes start off as a payment against inv.
reference="ONE MOMENT",
)
credit_note.reference = "Generated credit note %d" % credit_note.id
credit_note.save()
return cls(credit_note)
@transaction.atomic
def apply_to_invoice(self, invoice):
''' Applies the total value of this credit note to the specified
invoice. If this credit note overpays the invoice, a new credit note
containing the residual value will be created.
Raises ValidationError if the given invoice is not allowed to be
paid.
'''
from invoice import InvoiceController # Circular imports bleh.
inv = InvoiceController(invoice)
inv.validate_allowed_to_pay()
# Apply payment to invoice
rego.CreditNoteApplication.objects.create(
parent=self.credit_note,
invoice=invoice,
amount=self.credit_note.value,
reference="Applied credit note #%d" % self.credit_note.id,
)
inv.update_status()
# TODO: Add administration fee generator.
|